77 results on '"de la Loge C"'
Search Results
52. Measuring Overall Severity of Myasthenia Gravis (MG): Evidence for the Added Value of the MG Symptoms PRO.
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Regnault A, Morel T, de la Loge C, Mazerolle F, Kaminski HJ, and Habib AA
- Abstract
Introduction: Accurate measurement of myasthenia gravis (MG) severity is required for appropriate clinical monitoring of patients with MG and assessment of the benefit of new treatments in clinical trials. Our objective was to explore how MG severity can be measured and to determine how the newly developed MG Symptoms Patient-Reported Outcome (PRO) instrument complements the available measures of MG severity., Methods: The conceptual coverage of the Quantitative MG (QMG), MG Composite (MGC), MG-Activities of Daily Living (MG-ADL), and MG Symptoms PRO was scrutinized against core symptoms of MG: muscle weakness in three muscle groups (ocular, bulbar, and respiratory), muscle weakness fatigability, and physical fatigue. Post hoc analyses of the MG0002 study, a Phase 2a clinical trial of rozanolixizumab in adults with moderate to severe generalized MG, included correlation and Rasch model analyses., Results: The qualitative appraisal highlighted that only the MG Symptoms PRO captured physical fatigue. Data from 541 assessments (43 unique patients) were used for the analyses. Correlations ranged between 0.56 and 0.74 for the MG-ADL, QMG, MGC, and MG Symptoms PRO Muscle Weakness Fatigability score, and between 0.20 and 0.71 for the MG Symptoms PRO scores focusing on independent muscle groups. Analyses with the Rasch model estimated a meaningful continuum of severity of MG, including all items, except ocular muscles, from the four instruments. The QMG and MG Symptoms PRO had the broadest coverage of the MG severity continuum. Muscle fatigability and physical fatigue were more characteristic of low severity while bulbar weakness indicated more severe MG., Conclusion: The severity of MG can be reflected in a meaningful continuum underpinned by the MG-specific outcome measures. Only ocular muscle manifestations were shown to reflect a possibly different facet of MG severity. With its modular nature and comprehensive content, the MG Symptoms PRO provides complementary information to the outcome measures widely used in MG., Trial Registration: ClinicalTrials.gov identifier: NCT03052751., (© 2023. The Author(s).)
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- 2023
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53. Publisher Correction: Long-Term Health-Related Quality of Life in Patients with Plaque Psoriasis Treated with Certolizumab Pegol: Three-Year Results from Two Randomised Phase 3 Studies (CIMPASI-1 and CIMPASI-2).
- Author
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Gisondi P, Gottlieb AB, Elewski B, Augustin M, McBride S, Tsai TF, de la Loge C, Fierens F, López Pinto JM, Tilt N, and Lebwohl M
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- 2023
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54. Effect of bimekizumab on symptoms and impact of disease in patients with psoriatic arthritis over 3 years: results from BE ACTIVE.
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Mease PJ, Asahina A, Gladman DD, Tanaka Y, Tillett W, Ink B, Assudani D, de la Loge C, Coarse J, Eells J, and Gossec L
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- Humans, Male, Middle Aged, Female, Quality of Life, Fatigue drug therapy, Fatigue etiology, Double-Blind Method, Pain, Treatment Outcome, Arthritis, Psoriatic diagnosis
- Abstract
Objectives: Evaluate effects of long-term bimekizumab treatment on patient-reported outcome (PRO) measures, symptoms and the impact of PsA on patients., Methods: Patients with active PsA were enrolled into BE ACTIVE, a 48-week randomised controlled trial (NCT02969525). After Week 48, patients could enter a 104-week open-label extension (NCT03347110), receiving bimekizumab 160 mg every four weeks. PRO measures assessed included arthritis pain visual analogue scale (VAS), PsA Impact of Disease (PsAID)-9, 36-Item Short Form Survey (SF-36) and HAQ-Disability Index (HAQ-DI). Results were analysed as mean (S.E.M.) changes from baseline (CfB) from Week 0 to the end of the open-label extension (3 years) and as percentage of patients reaching patient-acceptable symptom state (PASS) for global impact (PsAID-9 total score ≤4) and normal function (HAQ-DI total score <0.5). Non-responder imputation was applied to missing binary outcomes., Results: In 206 patients (mean age 49.3 years, 51.0% male), completion rate was high; 161 (78.2%) patients completed Week 152. Bimekizumab treatment was associated with long-term sustained improvements in pain [arthritis pain VAS CfB; Week 48: -29.9 (1.9); Week 152: -32.0 (1.9)] and fatigue [PsAID-9 fatigue CfB; -2.4 (0.2); -2.7 (0.2)]. High percentages of patients achieved acceptable symptom state (PsAID-9 PASS: 75.2%; 65.0%) and normalised function (HAQ-DI <0.5: 49.0%; 46.1%). Improvements in patient global assessment and SF-36 Physical Component Summary were also sustained., Conclusions: Bimekizumab treatment was associated with long-term sustained improvements in pain and fatigue, reducing overall impact of PsA on patients. Physical function and quality of life improved up to 3 years., Trial Registration: ClinicalTrials.gov, https://clinicaltrials.gov, NCT02969525, NCT03347110., (© The Author(s) 2022. Published by Oxford University Press on behalf of the British Society for Rheumatology.)
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- 2023
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55. Long-Term Health-Related Quality of Life in Patients with Plaque Psoriasis Treated with Certolizumab Pegol: Three-Year Results from Two Randomised Phase 3 Studies (CIMPASI-1 and CIMPASI-2).
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Gisondi P, Gottlieb AB, Elewski B, Augustin M, McBride S, Tsai TF, de la Loge C, Fierens F, López Pinto JM, Tilt N, and Lebwohl M
- Abstract
Introduction: Certolizumab pegol (CZP) is an Fc-free, PEGylated, anti-tumour necrosis factor biologic. Safety and efficacy data for CZP over 3 years have been previously reported. We report 3-year quality of life (QoL) outcomes for patients treated with CZP, pooled from two phase 3 trials., Methods: Adults with moderate-to-severe plaque psoriasis for ≥ 6 months were initially randomised 1:2:2 to double-blinded placebo every 2 weeks (Q2W), CZP 200 mg Q2W (loading dose of CZP 400 mg at weeks 0/2/4) or CZP 400 mg Q2W. All patients received open-label CZP (200 mg or 400 mg Q2W) from week 48. Dermatology Life Quality Index (DLQI), 36-Item Short Form Survey (SF-36), EuroQol 5-Dimensions 3-Level (EQ-5D-3L) and Work Productivity and Activity Impairment (WPAI) scores are reported as observed., Results: At week 0, 100 patients were randomised to placebo, 186 to CZP 200 mg Q2W and 175 to CZP 400 mg Q2W. For CZP-randomised patients, 60.9% had a DLQI score of 0 or 1 by week 48. Both the physical and mental component scores of SF-36 also improved from baseline to week 48 (mean change from baseline: 4.4 and 5.4, respectively). The proportion of patients with a score of 1 in the EQ-5D-3L Pain/Discomfort dimension increased (week 0, 21.1%; week 48, 66.2%), and WPAI Presenteeism, Work Impairment, and Activity Impairment improved from baseline to week 48, with the strongest gains observed for Activity Impairment (week 0, 33.3% of time impaired; week 48, 6.7%). Across patient-reported outcomes, gains were sustained through week 144, with durable improvements observed regardless of sex, psoriatic arthritis status or prior exposure to biologics., Conclusion: CZP treatment was associated with sustained and tangible improvements in health-related QoL (DLQI and SF-36), health status (EQ-5D-3L) and functional impairment at work and in other daily activities (WPAI)., Trial Registration: ClinicalTrials.gov NCT02326298 (CIMPASI-1) and NCT02326272 (CIMPASI-2)., (© 2022. The Author(s).)
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- 2023
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56. Safety and Efficacy of Bimekizumab in Patients With Active Ankylosing Spondylitis: Three-Year Results From a Phase IIb Randomized Controlled Trial and Its Open-Label Extension Study.
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Baraliakos X, Deodhar A, Dougados M, Gensler LS, Molto A, Ramiro S, Kivitz AJ, Poddubnyy D, Oortgiesen M, Vaux T, Fleurinck C, Shepherd-Smith J, de la Loge C, de Peyrecave N, and van der Heijde D
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- Humans, Quality of Life, Double-Blind Method, Antibodies, Monoclonal, Humanized therapeutic use, Treatment Outcome, Spondylitis, Ankylosing drug therapy, Spondylitis, Ankylosing chemically induced
- Abstract
Objective: To assess the long-term safety, tolerability, and efficacy of bimekizumab in patients with active ankylosing spondylitis (AS)., Methods: Patients with active AS who completed the dose-ranging, 48-week BE AGILE randomized controlled trial were eligible to participate in an open-label extension (OLE) study, in which patients received 160 mg of bimekizumab every 4 weeks. We present the safety and efficacy results through 156 weeks. Missing efficacy data were imputed using nonresponder imputation analysis for binary outcomes and multiple imputation for continuous outcomes., Results: From weeks 0-156, 280 of 303 patients (exposure-adjusted incidence rate 141.0 per 100 patient-years) experienced ≥1 treatment-emergent adverse event; the most frequent adverse events were nasopharyngitis (8.1 per 100 patient-years) and upper respiratory tract infection (5.0 per 100 patient-years). Additionally, 67 of 303 patients (9.8 per 100 patient-years) had mild to moderate localized fungal infections (28 of 303 patients had Candida infections [3.7 per 100 patient-years] and 23 of 303 patients had oral candidiasis [3.0 per 100 patient-years]), 10 patients had serious infections (1.3 per 100 patient-years), and no cases of active tuberculosis were reported. Active inflammatory bowel disease (1.1 per 100 patient-years), anterior uveitis (0.7 per 100 patient-years), and adjudicated major adverse cardiovascular events (0.3 per 100 patient-years) were infrequent. The efficacy of bimekizumab treatment demonstrated at week 48 was sustained in the OLE study. At week 156, nonresponder imputation analysis showed that 53.7% of patients (72.6% of observed cases) met the Assessment of SpondyloArthritis international Society criteria for 40% improvement and 28.0% of patients (37.9% of observed cases) achieved partial remission; Ankylosing Spondylitis Disease Activity Scores were reduced from baseline (mean ± SEM 3.9 ± 0.1) to week 48 (2.1 ± 0.1) and week 156 (1.9 ± 0.1) (multiple imputation). Patients showed sustained improvements in pain, fatigue, physical function, and health-related quality of life., Conclusion: The safety profile of bimekizumab was found to be consistent with previously demonstrated findings, and no new safety signals were identified. The efficacy of bimekizumab in patients with AS was sustained through 3 years of treatment., (© 2022 The Authors. Arthritis & Rheumatology published by Wiley Periodicals LLC on behalf of American College of Rheumatology.)
- Published
- 2022
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57. Validation of the Pediatric Narcolepsy Screening Questionnaire (PNSQ): A cross-sectional, observational study.
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Morris S, Plazzi G, de la Loge C, Marrel A, Profant J, Steininger TL, Lin J, and Owens JA
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- Child, Cross-Sectional Studies, Humans, Psychometrics, Reproducibility of Results, Surveys and Questionnaires, Narcolepsy diagnosis
- Abstract
Objective/background: This study evaluated psychometric properties of the Pediatric Narcolepsy Screening Questionnaire (PNSQ), developed in response to the difficulty of identifying pediatric narcolepsy., Patients/methods: The initial PNSQ was updated following debriefing interviews with parents of children with suspected/diagnosed narcolepsy. Subsequently, newly recruited caregivers were categorized into groups: clinician-confirmed narcolepsy, other sleep problems (OSP), and no sleep problems (controls). Caregivers completed the 11-item PNSQ assessing narcolepsy symptomatology. PNSQ psychometric properties were evaluated; mean PNSQ Total Score (TS) was compared inter-group using analysis of variance., Results: The analysis population (N = 158) included patients with narcolepsy (n = 49), OSP (n = 55), and controls (n = 54); mean ± SD age was 13.8 ± 2.8, 10.2 ± 4.3, and 10.0 ± 3.8 years, respectively. Inter-item Pearson correlations (range, 0.22-0.75) indicated good construct validity. Principal component analysis confirmed unidimensionality. Item discriminative power was high for narcolepsy vs control (range, 0.693-0.936) and lower for narcolepsy vs OSP (range, 0.584-0.729). The latent trait was well covered (separation index = 0.868). Item 7 (vivid dreams/nightmares), having low discriminative power and specificity, was removed. Cronbach's alpha (final PNSQ) indicated high internal consistency reliability (raw alpha = 0.88). Mean ± SD PNSQ TS (range, 0-50) in the narcolepsy, OSP, and control groups were 34.98 ± 7.98, 25.20 ± 9.43, and 9.54 ± 9.38, respectively (nominal P < 0.0001). Classification by PNSQ TS was defined: PNSQ+ (likely narcolepsy, TS ≥ 29), PNSQ 0 (likely OSP, TS 19-28), and PNSQ- (narcolepsy unlikely, TS ≤ 18); patients with narcolepsy were classified as PNSQ+ (79.6%), PNSQ 0 (18.4%), and PNSQ- (2.0%)., Conclusions: The PNSQ demonstrated good psychometric properties and excellent performance discriminating narcolepsy, OSP, and control groups., Competing Interests: Declaration of competing interest Susan Morris is a former employee of Jazz Pharmaceuticals who, in the course of her employment, received stock options exercisable for, and other stock awards of, ordinary shares of Jazz Pharmaceuticals plc. Giuseppe Plazzi is a former consultant to Jazz Pharmaceuticals and has participated in advisory boards for UCB Pharma, Bioprojet, Idorsia, Jazz Pharmaceuticals, and Takeda. Christine de la Loge is a paid consultant to ICON plc. Alexia Marrel is an employee of ICON plc. Judi Profant is a former full-time employee of Jazz Pharmaceuticals who, in the course of this employment, received stock options exercisable for, and other stock awards of, ordinary shares of Jazz Pharmaceuticals, plc. Teresa L. Steininger is a full-time employee of Jazz Pharmaceuticals who, in the course of this employment, has received stock options exercisable for, and other stock awards of, ordinary shares of Jazz Pharmaceuticals, plc. Junji Lin is a full-time employee of Jazz Pharmaceuticals who, in the course of this employment, has received stock options exercisable for, and other stock awards of, ordinary shares of Jazz Pharmaceuticals, plc. Judith A. Owens is a former consultant to Jazz Pharmaceuticals and has received honoraria for consulting work and research grant funding from Jazz., (Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2022
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58. The spasticity-related quality of life 6-dimensions instrument in upper-limb spasticity: Part I Development and responsiveness.
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Turner-Stokes L, Fheodoroff K, Jacinto J, Lambert J, De La Loge C, Calvi-Gries F, Whalen J, Lysandropoulos A, Maisonobe P, and Ashford S
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- Adult, Humans, Longitudinal Studies, Muscle Spasticity etiology, Prospective Studies, Quality of Life, Treatment Outcome, Upper Extremity, Botulinum Toxins, Type A, Neuromuscular Agents, Stroke
- Abstract
Objective: To describe the development of the Spasticity-related Quality of Life 6-Dimensions instrument (SQoL-6D) and its sensitivity to clinical change (responsiveness)., Design: Multicentre, prospective, longitudinal cohort study at 8 UK sites (NCT03442660)., Patients: Adults (n = 104) undergoing focal treatment of upper limb spasticity., Methods: No condition-specific health-related quality of life tool is available for upper-limb spasticity of any aetiology. The SQoL-6D was developed to fulfil this need, designed to complement the Upper Limb Spasticity Index (which incorporates the Goal Attainment Scaling evaluation of upper limb spasticity [GASeous] tool) with targeted standardised measures. The 6 dimensions of the SQoL-6D (score range 0-4) map onto common treatment goal areas identified in upper-limb spasticity studies. A Total score (0-100) provides overall spasticity-related health status. To assess responsiveness, the SQoL-6D, Global Assessment of Benefit scale and "GASeous" were administered at enrolment and 8 weeks., Results: Significant differences in mean SQoL-6D Total score change and effect sizes across patients rating "some benefit" (0.51) and "great benefit" (0.88) supported responsiveness., Conclusion: The SQoL-6D is a promising new measure of health status in upper limb spasticity, that enables systematic assessment of the impact of this condition in relation to patients' priority treatment goals. A psychometric evaluation of SQoL-6D is presented separately.
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- 2022
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59. The spasticity-related quality of life 6-dimensions instrument in upper-limb spasticity: Part II A first psychometric evaluation.
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Turner-Stokes L, Fheodoroff K, Jacinto J, Lambert J, De La Loge C, Calvi-Gries F, Whalen J, Lysandropoulos A, Maisonobe P, and Ashford S
- Subjects
- Adult, Cross-Sectional Studies, Humans, Longitudinal Studies, Prospective Studies, Psychometrics, Reproducibility of Results, Surveys and Questionnaires, Quality of Life, Upper Extremity
- Abstract
Objective: Psychometric evaluation of the Spasticity-related Quality of Life 6-Dimensions instrument (SQoL-6D)., Design: A clinimetric evaluation conducted in a multicentre, prospective, longitudinal cohort study at 8 UK sites., Patients: Adult patients (n=104) undergoing focal treatment of upper-limb spasticity., Methods: The SQoL-6D was administered in the clinic at enrolment and at 8 weeks, then 1-4 days later at home to assess test-retest reliability., Results: The SQoL-6D demonstrated adequate construct validity and unidimensionality of the scale, allowing the calculation of a Total score. Cronbach's alpha (0.74) supported the internal consistency reliability, while the intraclass correlation coefficient supported test-retest reliability (0.82). Correlation coefficients with established instruments supported convergent validity, while significant differences between known-groups (of differing clinical severity) in SQoL-6D Total score confirmed its sensitivity to both cross-sectional and longitudinal differences., Conclusion: The SQoL-6D is a promising new measure to assess health status for patients with upper-limb spasticity of any aetiology. Further investigation and exploration of the allocation of weights to convert the SQoL-6D to a health-related quality of life utility index, are required.
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- 2022
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60. Development and validation of the Methotrexate Experience Questionnaire, a new methotrexate oral treatment adherence tool in rheumatoid arthritis.
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Curtis JR, Nebesky JM, de Bock E, de la Loge C, Arnould B, Davey R, Devenport J, and Pethö-Schramm A
- Abstract
Objective: Despite the development of new biologic therapies, methotrexate (MTX) remains the preferred initial disease-modifying anti-rheumatic drug to treat rheumatoid arthritis (RA). Adherence to disease-modifying anti-rheumatic drugs is suspected to be highly variable potentially leading to reduced treatment effectiveness. This work aimed to develop and validate the Methotrexate Experience Questionnaire (MEQ), a tool to identify and characterize non-adherence to oral MTX., Methods: MEQ development included a literature review and qualitative interviews with RA patients and physicians in the United States. A retrospective, cross-sectional study using data from Optimum Patient Care Research Database, a large primary care database of electronic medical records in the United Kingdom, was conducted to finalize the MEQ and evaluate its psychometric properties., Results: Three hundred seven e-consented subjects (66% women, mean age of 65 years) completed the MEQ remotely, and were included in this analysis. Item-convergent and divergent validity were generally supportive of the construct validity of the MEQ and Cronbach's alpha of 0.87 supported its reliability. The MEQ Total score presented statistically significant correlations of small to medium size with all selected concurrent scales, as expected; the highest correlation was obtained between the general acceptance score of ACCEPT and the MEQ Total score (0.55, p < 0.001). Known-groups validity was demonstrated as a logical pattern of higher MEQ scores was obtained for patients considered adherent with both the 6- and 12-month Proportion of Days Covered (mean MEQ total score 82.7 for 12-month PDC ≥ 80% against 76.3 for 12-month PDC < 80%, p< 0.0001). Additionally, a pattern of lower MEQ scores was obtained for patients with more severe disease assessed with Routine Assessment of Patient Index Data 3., Conclusion: The 24-item MEQ is a reliable and valid instrument to assess the adherence of RA patients taking MTX, potentially improving over historical refill rate metrics by providing insights into the individual reasons for lack of adherence. This information should facilitate clinician-patient discussions and help inform treatment decisions., (© 2021. The Author(s).)
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- 2021
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61. Health-related quality of life in double-blind Phase III studies of brivaracetam as adjunctive therapy of focal seizures: A pooled, post-hoc analysis.
- Author
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Brandt C, Borghs S, Elmoufti S, Mueller K, Townsend R, and de la Loge C
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- Adult, Double-Blind Method, Drug Therapy, Combination, Epilepsies, Partial epidemiology, Female, Humans, Male, Middle Aged, Randomized Controlled Trials as Topic methods, Treatment Outcome, Young Adult, Anticonvulsants administration & dosage, Clinical Trials, Phase III as Topic methods, Epilepsies, Partial drug therapy, Epilepsies, Partial psychology, Pyrrolidinones administration & dosage, Quality of Life psychology
- Abstract
Purpose: The effect of adjunctive brivaracetam on health-related quality of life (HRQoL) was assessed in a post-hoc analysis using pooled data from three randomized, double-blind, placebo-controlled Phase III studies in patients with refractory focal seizures (NCT00490035, NCT00464269, and NCT01261325)., Methods: The Patient-Weighted Quality of Life in Epilepsy Questionnaire (QOLIE-31-P) was completed at randomization, and weeks 4, 8 (in two of three studies), and 12 (end of the treatment period). Mean change from baseline to week 12 or early discontinuation, and percentage of patients with clinically meaningful improvement were reported for the placebo and brivaracetam 50, 100, and 200mg/day groups., Results: At baseline, mean QOLIE-31-P scores were similar between treatment groups. At week 12 or early discontinuation, mean (standard deviation) changes from baseline in QOLIE-31-P total score were 2.8 (12.7), 3.0 (14.0), 2.4 (14.0), and 3.0 (12.1) points for the placebo and brivaracetam 50, 100, and 200mg/day groups, respectively, indicating HRQoL improved slightly over time during the treatment period, but was similar for placebo and brivaracetam groups. All subscale score changes were positive, indicating stable or improved HRQoL over time. The brivaracetam 100 and 200mg/day groups showed the largest differences compared with placebo in Seizure Worry subscale scores (7.3 and 8.8 vs. 5.0 points). Approximately 40% of patients had improvements in QOLIE-31-P scores beyond the Minimal Important Change (MIC) thresholds. The subgroup of ≥50% focal seizure frequency responders had higher improvements for all treatment arms and all subscales than for those in the overall pooled population., Conclusion: In this post-hoc analysis, adjunctive brivaracetam treatment was shown to be associated with stable or improving overall HRQoL over time, similar to placebo, with modest improvements in subscales sensitive to efficacy, and no deterioration in subscales sensitive to tolerability. These results reflect the known efficacy and tolerability profile of brivaracetam., (Copyright © 2016 Ellen Carey, UCB Brussels, Belgium. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
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62. Understanding the Patient Perspective of Seizure Severity in Epilepsy: Development of a Conceptual Model.
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Borghs S, Tomaszewski EL, Halling K, and de la Loge C
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- Anticonvulsants therapeutic use, Epilepsy, Humans, Qualitative Research, Epilepsy, Generalized complications, Epilepsy, Generalized drug therapy, Models, Theoretical, Seizures
- Abstract
Purpose: For patients with uncontrolled epilepsy, the severity and postictal sequelae of seizures might be more impactful than their frequency. Seizure severity is often assessed using patient-reported outcome (PRO) instruments; however, evidence of content validity for existing instruments is lacking. Our aim was to understand the real-life experiences of patients with uncontrolled epilepsy., Methods: A preliminary conceptual model was developed. The model was refined through (1) a targeted literature review of qualitative research on seizure severity; (2) interviews with four clinical epilepsy experts to evaluate identified concepts; and (3) qualitative interviews with patients with uncontrolled epilepsy, gathering descriptions of symptoms and impacts of epilepsy, focusing on how patients experience and describe "seizure severity." Findings were summarized in a final conceptual model of seizure severity in epilepsy., Results: Twenty-five patients (12 who experienced primary generalized tonic-clonic seizures and 13 who experienced partial-onset seizures) expressed 42 different symptoms and 26 different impacts related to seizures. The final conceptual model contained a wide range of concepts related to seizure frequency, symptoms, and duration., Conclusion: Our model identified several new concepts that characterize the patient experience of seizure severity. A seizure severity PRO instrument should cover a wide range of seizure symptoms alongside frequency and duration of seizures. This qualitative work reinforces the notion that measuring seizure frequency is insufficient and that seizure severity is important in defining the patient's experience of epilepsy. This model could be used to assess the content validity of existing PRO instruments, or could support the development of a new one.
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- 2016
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63. PatientsLikeMe® Online Epilepsy Community: Patient characteristics and predictors of poor health-related quality of life.
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de la Loge C, Dimova S, Mueller K, Phillips G, Durgin TL, Wicks P, and Borghs S
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- Adult, Epilepsy therapy, Female, Health Status, Humans, Internet, Male, Middle Aged, Retrospective Studies, Surveys and Questionnaires, Young Adult, Epilepsy psychology, Quality of Life, Social Support
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Objective: The online PatientsLikeMe® Epilepsy Community allows patients with epilepsy to record, monitor, and share their demographic, disease, and treatment characteristics, providing valuable insights into patient perceptions and understanding of epilepsy. The objective of this retrospective analysis was to characterize the profile of users and their disease and identify factors predictive of poor health-related quality of life (HRQoL), while assessing the platform's potential in providing patient-reported data for research purposes., Methods: Data recorded (January 2010-November 2011) by Epilepsy Community members, with an epilepsy diagnosis and who reported >1 seizure, included the following: sociodemographic and disease characteristics, treatments, symptoms, side effects perceived as medication-related, seizure occurrence, and standardized questionnaires (Quality of Life in Epilepsy Inventory [QOLIE-31/P], EuroQoL 5-Dimensions Scale, 3 Levels [EQ-5D-3L], and Hospital Anxiety and Depression Scale [HADS]). Univariate and multivariate logistic regressions were conducted to identify predictors of poor HRQoL., Results: During the study period, the Epilepsy Community comprised 3073 patients, of whom 71.5% were female, had a mean age of 37.8years, and had a mean epilepsy duration of 17.7years. The most frequently reported moderate/severe symptoms (n=2135) included memory problems (60.2%), problems concentrating (53.8%), and fatigue (50.0%). Medication-related side effects (n=639) included somnolence (23.2%), fatigue (17.2%), and memory impairment (13.8%). The QOLIE-31/P scores (n=1121) were significantly worse in patients who experienced a recent seizure. For QOLIE-31/P, highly predictive factors for poor HRQoL included the following: mild/moderate problems concentrating, depression, memory problems, treatment side effects, occurrence of tonic-clonic seizures, and epilepsy duration ≤1year. For EQ-5D-3L, highly predictive factors for poor HRQoL included the following: pain, depression, and comorbidities. Patients on newer AEDs were less likely to report poor HRQoL (QOLIE-31/P)., Significance: These findings move further towards supporting the feasibility and usefulness of collecting real-world, anonymized data recorded by patients online. The data provide insights into factors impacting HRQoL, suggesting that a holistic treatment approach beyond seizure control should be considered in epilepsy., (Copyright © 2016 Elsevier Inc. All rights reserved.)
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- 2016
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64. Relationship Between FEV 1 and Patient-Reported Outcomes Changes: Results of a Meta-Analysis of Randomized Trials in Stable COPD.
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de la Loge C, Tugaut B, Fofana F, Lambert J, Hennig M, Tschiesner U, Vahdati-Bolouri M, Segun Ismaila A, and Suresh Punekar Y
- Abstract
Background: This meta-analysis assessed the relationship between change from baseline (CFB) in spirometric measurements (trough forced expiratory volume in 1 second [FEV
1 ] and FEV1 area under the curve [AUC]) and patient-reported outcomes (St. George's Respiratory Questionnaire total score [SGRQ] CFB, Transition Dyspnea Index [TDI] and exacerbation rates) after 6-12 months' follow-up, using study treatment-group level data. Methods: A systematic literature search was performed for randomized controlled trials of ≥24 weeks duration in adults with chronic obstructive pulmonary disease (COPD). Studies reporting ≥1 spirometric measurement and ≥1 patient-reported outcome (PRO) at baseline and at study endpoint were selected. The relationships between PROs and spirometric endpoints were assessed using Pearson correlation coefficient and meta-regression. Results: Fifty-two studies (62,385 patients) were included. Primary weighted analysis conducted at the last assessment showed a large significant negative correlation (r, -0.68 [95% confidence interval (CI); -0.77, -0.57]) between trough FEV1 and SGRQ. Improvement of 100 mL in trough FEV1 corresponded to a 5.9 point reduction in SGRQ. Similarly, a reduction of 4 points on SGRQ corresponded to 40 mL improvement in trough FEV1 ( p <0.001). The weighted correlation coefficients of trough FEV1 with TDI, exacerbation rate (all) and exacerbation rate (moderate/severe) at last assessment point were 0.57, -0.69 and -0.57, respectively (all p <0.05). For the analyses excluding placebo groups, the correlations of FEV1 with SGRQ and TDI were lower but significant. Conclusions: A strong association exists between changes in spirometric measurements and changes in PROs., Competing Interests: YSP, MH, M V-B and ASI are employees of GlaxoSmithKline and hold stock in GlaxoSmithKline. UT was an employee of GlaxoSmithKline at the time of this study and held stock in GlaxoSmithKline. BT, FF, and JL are employed by Mapi and were paid consultants to GlaxoSmithKline. CdL works as an independent consultant and was paid by Mapi to participate in this study. All authors contributed to the conception and design of the study. CdL, BT, FF and JL contributed to data acquisition and analysis. All authors contributed to data analysis and interpretation.- Published
- 2016
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65. Brivaracetam in Unverricht-Lundborg disease (EPM1): Results from two randomized, double-blind, placebo-controlled studies.
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Kälviäinen R, Genton P, Andermann E, Andermann F, Magaudda A, Frucht SJ, Schlit AF, Gerard D, de la Loge C, and von Rosenstiel P
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- Adolescent, Adult, Clonazepam therapeutic use, Dose-Response Relationship, Drug, Double-Blind Method, Drug Therapy, Combination, Female, Fructose analogs & derivatives, Fructose therapeutic use, Humans, Isoxazoles therapeutic use, Levetiracetam, Male, Middle Aged, Phenobarbital therapeutic use, Piracetam analogs & derivatives, Piracetam therapeutic use, Topiramate, Treatment Outcome, Valproic Acid therapeutic use, Young Adult, Zonisamide, Anticonvulsants therapeutic use, Pyrrolidinones therapeutic use, Unverricht-Lundborg Syndrome drug therapy
- Abstract
Objective: To evaluate efficacy, tolerability, and safety of adjunctive brivaracetam (BRV) in patients with Unverricht-Lundborg disease (EPM1)., Methods: Two prospective, multicenter, double-blind, phase III trials (N01187/NCT00357669; N01236/NCT00368251) in patients (≥16 years) with genetically ascertained EPM1, showing moderate-severe myoclonus (action myoclonus score ≥30/160), randomized (1:1:1) to twice-daily BRV (N01187: 50 or 150 mg/day; N01236: 5 or 150 mg/day), or placebo. Both studies comprised a baseline period (2 weeks), 2-week up-titration period, 12-week stable-dose maintenance period, and down-titration or entry into long-term follow-up study. Symptoms of myoclonus were assessed by Unified Myoclonus Rating Scale (UMRS). Primary efficacy end point was percent reduction from baseline in action myoclonus score (UMRS section 4) at last treatment visit. Safety assessments included treatment-emergent adverse events (TEAEs)., Results: N01187: 50 patients randomized, 47 completed; N01236: 56 patients randomized, 54 completed. Median (min-max) percent reduction from baseline in action myoclonus score is the following-N01187: placebo 5.6 (-81.3 to 53.8), pooled BRV group (primary efficacy analysis) 21.4 (-50.0 to 73.6), BRV 50 mg/day 26.3 (-35.8 to 69.2), BRV 150 mg/day 16.9 (-50.0 to 73.6); N01236: placebo 17.5 (-170 to 61.5), BRV 5 mg/day -4.6 (-430 to 81.8), BRV 150 mg/day (primary efficacy analysis) 12.3 (-58.3 to 96.9). Estimated differences versus placebo were not statistically significant. TEAEs were reported by 72-75% placebo-treated and 56-83% BRV-treated patients., Significance: Effect of BRV on action myoclonus was not statistically significant. However, action myoclonus score showed wide intrapatient variability and may not have been the optimal tool to measure severity of myoclonus in EPM1. Both studies had very high completion rates (95.3% overall), and a high percentage of patients (88.7% overall) entered long-term follow-up; both likely to be influenced by good tolerability. These studies demonstrate the feasibility of rigorous trials in progressive myoclonic epilepsy., (Wiley Periodicals, Inc. © 2015 International League Against Epilepsy.)
- Published
- 2016
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66. Sensitivity testing of the Seizure Severity Questionnaire (SSQ).
- Author
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Borghs S, de la Loge C, Brabant Y, and Cramer J
- Subjects
- Anticonvulsants therapeutic use, Female, Humans, Longitudinal Studies, Male, Seizures drug therapy, Sensitivity and Specificity, Seizures diagnosis, Severity of Illness Index, Surveys and Questionnaires
- Abstract
The sensitivity of the Seizure Severity Questionnaire (SSQ) was evaluated using pooled data from open-label extensions of two clinical trials in patients with partial-onset seizures. The SSQ includes questions relating to frequency and helpfulness of warning signs as well as frequency, severity, and bothersomeness of ictal and postictal effects. Differences between mean change from baseline for each SSQ item for responders and nonresponders were described and compared between patients solely with complex partial seizures (CPSs: responders, n=166; nonresponders, n=127) and those solely with secondarily generalized partial seizures (SGPSs: responders, n=26; nonresponders, n=24) at baseline. Seizure Severity Questionnaire total score and individual SSQ items related to ictal movement, consciousness, bothersomeness of postictal effects, and frequency of postictal emotional effects showed differentiation between seizure type responders. These data provide further validation of the SSQ by demonstrating its sensitivity in describing treatment effects., (© 2013.)
- Published
- 2014
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67. Determining minimally important change thresholds for the Seizure Severity Questionnaire (SSQ).
- Author
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Cramer JA, de la Loge C, Brabant Y, and Borghs S
- Subjects
- Female, Humans, Male, Outcome Assessment, Health Care, Sensitivity and Specificity, Seizures diagnosis, Severity of Illness Index, Surveys and Questionnaires
- Abstract
The Seizure Severity Questionnaire (SSQ) was developed to evaluate changes in seizure severity and bothersomeness. Determination of a threshold value reflecting meaningful patient benefit on the SSQ would improve clinical interpretation of scale results. The objective of this analysis was to define a minimally important change (MIC) threshold for the SSQ, using data from patients with treatment-resistant partial-onset seizures from two clinical trials (N=776). Minimally important change thresholds were calculated using standard anchor-based methods, with the Patient Global Impression of Change (PGIC) score as the anchor with the categories of 'much improved,' 'minimally improved,' 'much worsened,' and 'minimally worsened' combined. The calculated MIC thresholds (range: 0.34 to 0.50) suggest that a 0.48-point change in the SSQ total score reflects a clinically meaningful change in seizure severity from the patients' perspective., (© 2013 Elsevier Inc. All rights reserved.)
- Published
- 2014
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68. Defining minimally important change in QOLIE-31 scores: estimates from three placebo-controlled lacosamide trials in patients with partial-onset seizures.
- Author
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Borghs S, de la Loge C, and Cramer JA
- Subjects
- Adolescent, Adult, Aged, Double-Blind Method, Humans, Lacosamide, Middle Aged, Models, Statistical, Multicenter Studies as Topic, Treatment Outcome, Young Adult, Acetamides therapeutic use, Anticonvulsants therapeutic use, Clinical Trials as Topic, Epilepsies, Partial drug therapy, Epilepsies, Partial psychology, Psychological Tests, Quality of Life
- Abstract
The Quality of Life Inventory in Epilepsy (QOLIE-31) is a valuable tool to assess the impact of antiepileptic drugs on patients' lives, but interpretation of mean score changes can be challenging. Minimally important change (MIC) thresholds can be used to describe the proportion of clinically improved or worsened patients. Pooled data from Phase II/III trials of adjunctive lacosamide in patients with treatment-resistant partial-onset seizures were used to estimate MIC thresholds for the QOLIE-31 total score and subscales. Using multiple distribution- and anchor-based estimation methods, the optimal MIC value for the total score in this population of patients with treatment-resistant seizures was 5 points, which is lower than those previously reported in the literature for mixed populations. MIC estimates varied substantially across QOLIE-31 subscales. Taken together, these results demonstrate that intrinsic characteristics of a patient population impact what should be considered as MIC, a key consideration in the clinical interpretation of QOLIE-31 change scores., (Copyright © 2012 Elsevier Inc. All rights reserved.)
- Published
- 2012
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69. Perceived benefits of sharing health data between people with epilepsy on an online platform.
- Author
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Wicks P, Keininger DL, Massagli MP, de la Loge C, Brownstein C, Isojärvi J, and Heywood J
- Subjects
- Adolescent, Adult, Aged, Female, Humans, Male, Mental Healing, Middle Aged, Motor Activity, Patient Education as Topic, Social Behavior, Young Adult, Epilepsy psychology, Information Dissemination, Online Systems, Perception physiology, Self Care methods
- Abstract
An epilepsy community was developed on PatientsLikeMe.com to share data between patients to improve their outcomes by finding other patients like them. In a 14-day response period, 221 patients with epilepsy (mean age: 40 years, SD: 12, range: 17-72, 66% female) completed a survey about benefits they perceived. Prior to using the site, a third of respondents (30%) did not know anyone else with epilepsy with whom they could talk; of these, 63% now had at least one other patient with whom they could connect. Perceived benefits included: finding another patient experiencing the same symptoms (59%), gaining a better understanding of seizures (58%), and learning more about symptoms or treatments (55%). Number of benefits was associated with number of relationships with other patients, F(4,216)=8.173, P<0.001). Patients with epilepsy reported an array of perceived benefits similar to those reported by populations with other diseases. Controlled sharing of health data may have the potential to improve disease self-management of people with epilepsy., (Copyright © 2011 Elsevier Inc. All rights reserved.)
- Published
- 2012
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70. Assessment of behavioral and emotional functioning using standardized instruments in children and adolescents with partial-onset seizures treated with adjunctive levetiracetam in a randomized, placebo-controlled trial.
- Author
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de la Loge C, Hunter SJ, Schiemann J, and Yang H
- Subjects
- Adolescent, Checklist, Child, Child, Preschool, Double-Blind Method, Female, Humans, Levetiracetam, Male, Piracetam therapeutic use, Psychiatric Status Rating Scales, Surveys and Questionnaires, Anticonvulsants therapeutic use, Behavioral Symptoms diagnosis, Behavioral Symptoms drug therapy, Behavioral Symptoms etiology, Epilepsies, Partial complications, Epilepsies, Partial drug therapy, Mood Disorders diagnosis, Mood Disorders drug therapy, Mood Disorders etiology, Piracetam analogs & derivatives
- Abstract
A randomized, double-blind, placebo-controlled study (N01103, NCT00105040) evaluated behavioral and emotional effects of adjunctive levetiracetam (LEV) treatment in children and adolescents (4-16years old) with uncontrolled partial-onset seizures. Patients received adjunctive LEV 20-60mg/kg/day (n=64) or placebo (n=34) for 12weeks. The Achenbach Child Behavior Checklist (CBCL) and portions of the Child Health Questionnaire-Parent Form 50 (CHQ-PF50) were used to assess behavioral and emotional functioning at baseline and end of the treatment period. Worsening of the mean CBCL Aggressive Behavior score occurred for LEV but not placebo, leading to similar results for Externalizing Syndromes and Total Problems (all P<0.05 vs placebo). The change in the CBCL Activities Competence score favored LEV (P<0.05). These results are in line with the known safety profile of LEV., (Copyright 2010 Elsevier Inc. All rights reserved.)
- Published
- 2010
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71. Patient-reported outcomes helped predict survival in multiple myeloma using partial least squares analysis.
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Viala M, Bhakar AL, de la Loge C, van de Velde H, Esseltine D, Chang M, Dhawan R, and Dubois D
- Subjects
- Adult, Aged, Aged, 80 and over, Cognition, Data Interpretation, Statistical, Emotions, Fatigue psychology, Female, Humans, Least-Squares Analysis, Logistic Models, Male, Middle Aged, Multiple Myeloma drug therapy, Multiple Myeloma physiopathology, Patient Participation, ROC Curve, Recurrence, Surveys and Questionnaires, Treatment Outcome, Multiple Myeloma mortality
- Abstract
Objective: The prognostic value of Patient-Reported Outcomes (PRO) in predicting mortality during treatment of multiple myeloma (MM) patients was assessed using partial least square (PLS) regression, a statistical method that is well-adapted for highly correlated data., Study Design and Setting: Four PRO measures, The European Organisation for Research and Treatment of Cancer (EORTC) QLQ-C30, the EORTC QLQ-MY24, the FACIT-Fatigue scale, and the FACT/GOG-Ntx scale, were administered during a trial designed to evaluate the efficacy and safety of bortezomib (VELCADE 1.3mg/m(2)) in MM patients (N=202). Clinical and PRO data were analyzed for predictive value by univariate and multivariate logistic regression methods and then by PLS regression., Results: Fifteen baseline PRO parameters were significant in predicting mortality during treatment when univariate logistic regression was used. In contrast, only two variables were retained in the multivariate analysis, as correlated variables were excluded from the model. Using PLS regression, 14 of the 21 PRO predictors were significant in predicting mortality. Clinical and PRO data used together increased the predictive power of all models compared to clinical data alone., Conclusion: The prognostic value of PRO was established and was more informative using PLS regression. PLS regression may therefore be a valuable method for analyzing PRO data.
- Published
- 2007
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72. Descriptive and prognostic value of patient-reported outcomes: the bortezomib experience in relapsed and refractory multiple myeloma.
- Author
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Dubois D, Dhawan R, van de Velde H, Esseltine D, Gupta S, Viala M, and de la Loge C
- Subjects
- Adult, Aged, Bortezomib, Europe, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Prognosis, Quality of Life, Surveys and Questionnaires, Treatment Outcome, Antineoplastic Agents therapeutic use, Boronic Acids therapeutic use, Multiple Myeloma drug therapy, Patient Satisfaction, Pyrazines therapeutic use
- Abstract
Purpose: Bortezomib, a boronic acid dipeptide, has been recently introduced as a new approach to treating multiple myeloma (MM). The goal of this work was to evaluate the added value of patient-reported outcomes (PRO) in the interpretation of bortezomib clinical trial outcomes., Patients and Methods: Two hundred two patients with relapsed, refractory MM were treated with bortezomib as part of the SUMMIT (Study of Uncontrolled Multiple Myeloma Managed with Proteasome Inhibition Therapy) study. Patients were administered the following four PRO measures at several time points: the European Organisation for Research and Treatment of Cancer (EORTC) core Quality of Life Questionnaire (QLQ-C30) and the myeloma-specific module (QLQ-MY24), the Functional Assessment of Chronic Illness Therapy (FACIT) Fatigue scale, and the Functional Assessment of Cancer Therapy (FACT)/Gynecologic Oncology Group (GOG) Neurotoxicity (Ntx) scale. Minimal important difference (MID) thresholds were used to define patients as improved, stable, or worsened. A survival analysis was conducted to assess the predictive power of PRO data., Results: For the total population, there was a positive change between baseline and best end point. Consistent with the clinical responses, change in PRO scores showed statistically significant differences between response groups with PRO improvement in patients with complete response (CR) or partial response (PR), mostly stable scores in patients with minor response or no change, and deterioration in most scores for patients with progressive disease. Change in scores for neuropathy-related symptoms was reasonably stable. In contrast, fatigue scores significantly improved for patients with CR or PR. When various MID thresholds were applied, the proportion of improved patients exceeded 35% for several domains within all change group definitions. Moreover, survival analysis results demonstrated the additional prognostic information PRO data can provide to supplement clinical data., Conclusion: This study demonstrated the complementary value for PRO assessments in further interpreting clinical response, the impact of adverse effects, and patient prognosis in clinical trials.
- Published
- 2006
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73. Cross-cultural validation and analysis of responsiveness of the QUALIOST: QUAlity of Life questionnaire In OSTeoporosis.
- Author
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de la Loge C, Sullivan K, Pinkney R, Marquis P, Roux C, and Meunier PJ
- Subjects
- Activities of Daily Living, Cross-Cultural Comparison, Female, Follow-Up Studies, France, Humans, Middle Aged, Osteoporosis, Postmenopausal physiopathology, Pain Measurement, Spinal Fractures etiology, Spinal Fractures prevention & control, Osteoporosis, Postmenopausal psychology, Psychometrics instrumentation, Quality of Life, Sickness Impact Profile, Surveys and Questionnaires
- Abstract
Background: The QUALIOST was designed for use with the SF-36 to measure established osteoporosis-specific quality of life (QoL). The reliability (internal consistency and test-retest) and validity of the questionnaire were established in a stand-alone psychometric validation study. The objective of this paper is to provide additional information on the instrument's responsiveness using clinical trial data, along with the reliability and validity of translated versions., Methods: The Spinal Osteoporosis Therapeutic Intervention (SOTI) was an international clinical trial comparing strontium ranelate to placebo on the occurrence of new vertebral fracture in patients with postmenopausal osteoporosis. QoL was a secondary endpoint, assessed using the SF-36 and QUALIOST at baseline and every six months, with the main analysis at 3-year follow-up. Questionnaire acceptability, analysis of the hypothesised structure, internal consistency reliability and responsiveness to clinical change over time were assessed at the 3-year follow up., Results: 1592 patients from 11 countries completed at least one QoL questionnaire. The psychometric properties of the questionnaires were assessed on cross-sectional (N = 1486) and longitudinal (N = 1288) data. Item discriminant validity of the QUALIOST was excellent, as was item convergent validity, with 100% of item-scale correlations being above the 0.40 level. Internal consistency reliability was also extremely good, with high Cronbach's alpha scores above the 0.70 benchmark. Responsiveness results were consistent for all QUALIOST scores, indicating that greater decreases in QoL corresponded to greater numbers of fractures experienced. QUALIOST scores also differed according to the type of fracture suffered. This was demonstrated by increased effect sizes for more severe vertebral fractures (clinical vertebral and painful vertebral). In comparing responsiveness, the QUALIOST scores were generally more consistent than those of the SF-36. Most notably, the QUALIOST was more responsive with regard to painful vertebral fractures than the SF-36., Conclusion: The QUALIOST is a reliable and valid tool for measuring QoL in postmenopausal osteoporotic women. Being available in several validated language versions, it is ready to be used in a variety of settings, including international clinical trials.
- Published
- 2005
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74. Validation of the short-form REFLUX-QUAL (RQS), a gastro-esophageal reflux disease (GERD) specific quality of life questionnaire.
- Author
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Amouretti M, Nalet B, Robaszkiewicz M, Wainsten JP, de la Loge C, Benmedjahed K, Dias-Barbosa C, Brin S, and Schatz B
- Subjects
- Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Psychometrics, Reproducibility of Results, Gastroesophageal Reflux psychology, Quality of Life, Surveys and Questionnaires
- Abstract
Introduction: Being an easy-to-use (eight items) quality of life questionnaire specific to GERD, the Reflux-Qual Short form (RQS) was developed for use in everyday practice. The purpose of this study was to assess the psychometric properties of the RQS., Methods and Materials: The reliability of the RQS was measured by the Cronbach's alpha coefficient and its clinical validity by comparing the RQS score for increasing clinical severity groups. The RQS discriminative power was compared with that of the SF12. Sensitivity to change over time was measured by calculating effect-sizes., Results: The reliability and validity of the questionnaire were assessed on a sample of 1195 patients. Its psychometric properties were very satisfactory: Cronbach alpha = 0.84; RQS score significantly reduced for the worst-affected patients; the discriminative power was up to 5 times higher when compared with the SF-12. Sensitivity to change over time, evaluated with 362 patients, showed highly significant differences between groups with different levels of clinical progression (P = 0.0001)., Conclusion: The RQS is a quality of life measurement instrument specific to GERD which is short, reliable, valid, and sensitive to within and between-subject differences.
- Published
- 2005
- Full Text
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75. Development and validation of the Patient Assessment of Constipation Quality of Life questionnaire.
- Author
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Marquis P, De La Loge C, Dubois D, McDermott A, and Chassany O
- Subjects
- Adult, Attitude to Health, Australia, Canada, Cross-Cultural Comparison, Europe, Female, Focus Groups, Humans, Male, Reproducibility of Results, Surveys and Questionnaires, United Kingdom, United States, Constipation psychology, Quality of Life
- Abstract
Objective: Chronic constipation is characterized by difficult, infrequent, or seemingly incomplete bowel movements. The Patient Assessment of Constipation Quality of Life (PAC-QOL) questionnaire was developed to address the need for a standardized, patient-reported outcomes measure to evaluate constipation over time., Material and Methods: Items for the PAC-QOL were generated from the literature, clinical experts, and patients. Following principal components and multi-trait analyses, 28 items were retained forming four subscales (worries and concerns, physical discomfort, psychosocial discomfort, and satisfaction) and an overall scale. Validation studies were conducted in the United States, Europe, Canada, and Australia, to evaluate the internal consistency reliability (Cronbach's alpha), reproducibility (Intraclass Correlation Coefficients (ICCs)), validity (analysis of variance models), and responsiveness (effect size) of the PAC-QOL scales., Results: The PAC-QOL scales were internally consistent (Cronbach's alpha >0.80) and reproducible (ICCs >0.70, except for the satisfaction subscale ICC=0.66). PAC-QOL scale scores were significantly associated with abdominal pain (p<0.001) and constipation severity (p<0.05). Effect sizes in patients reporting improvements in constipation over a 6-week period were moderate to large, with subscale effect sizes ranging from 0.76 to 3.41 and the overall scale effect size=1.77. Similar findings were observed in validation studies conducted in Europe, Canada, and Australia., Conclusions: The PAC-QOL is a brief but comprehensive assessment of the burden of constipation on patients' everyday functioning and well-being. Multinational studies demonstrate that the PAC-QOL is internally consistent, reproducible, valid, and responsive to improvements over time.
- Published
- 2005
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76. Cross-cultural development and validation of a patient self-administered questionnaire to assess quality of life in upper gastrointestinal disorders: the PAGI-QOL.
- Author
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de la Loge C, Trudeau E, Marquis P, Kahrilas P, Stanghellini V, Talley NJ, Tack J, Revicki DA, Rentz AM, and Dubois D
- Subjects
- Europe, Female, Humans, Longitudinal Studies, Male, Middle Aged, Psychometrics, Reproducibility of Results, Surveys and Questionnaires, United States, Cross-Cultural Comparison, Dyspepsia classification, Gastroesophageal Reflux classification, Gastroparesis classification, Health Status Indicators, Quality of Life
- Abstract
Objective: Summarize the Patient Assessment of Upper GastroIntestinal Disorders-Quality of Life (PAGI-QOL) development and provide results on its reliability and validity from the international psychometric validation in dyspepsia, GastroEsophageal Reflux Disease (GERD), and gastroparesis., Methods: Subjects completed the pilot PAGI-QOL at baseline and 8 weeks; and a subsample also at 2 weeks. Other assessments were: Patient Assessment of Upper Gastrointestinal Disorders-Symptom Severity Index, SF-36, number of disability days., Results: 1736 patients completed the PAGI-QOL at baseline. The questionnaire was reduced, producing a 30-item final version covering five domains: Daily Activities, Clothing, Diet and Food Habits, Relationship (REL), and Psychological Well-Being and Distress. Internal consistency was excellent (Cronbach's alpha range: 0.83-0.96). Test-retest reproducibility was good: intraclass correlations coefficients were over 0.70 except for the REL scale (0.61). Concurrent validity between the PAGI-QOL total score and all SF-36 subscale scores was good with moderate (0.52) to strong (0.72) correlations. PAGI-QOL scores showed excellent discriminant properties: patients who had spent some days in bed, had missed some days at work, and were kept from usual activities had much lower PAGI-QOL scores than those who did not (p < 0.0001)., Conclusion: The PAGI-QOL is a valid and reliable instrument assessing quality of life in patients with dyspepsia, GERD, or gastroparesis.
- Published
- 2004
- Full Text
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77. Development and validation of an acceptability and satisfaction questionnaire for a contraceptive vaginal ring, NuvaRing.
- Author
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Novák A, de la Loge C, and Abetz L
- Subjects
- Adolescent, Adult, Contraception methods, Contraception statistics & numerical data, Contraception, Barrier statistics & numerical data, Female, Humans, Multicenter Studies as Topic, Psychometrics, Reproducibility of Results, Contraception, Barrier methods, Patient Satisfaction, Surveys and Questionnaires
- Abstract
Objective: To validate an acceptability questionnaire for NuvaRing, a new combined contraceptive vaginal ring., Methods: A 21-item questionnaire was developed covering: ease of ring use, ease of package use, clarity of instructions, sexual comfort, cycle-related characteristics, compliance and satisfaction. A total of 2145 women completed the questionnaire after 3, 6 or 13 cycles of NuvaRing use. The psychometric properties and predictive value of the questionnaire were assessed using cycle 3 data (n = 1950). The quality of completed questionnaires, item content analysis, construct validity, internal consistency reliability, known groups validity and predictive validity were evaluated., Results: Excluding non-ordinal items, 0.6% of the data were missing. Principal component analysis of 15 ordinal items indicated that two hypothesised dimensions ('ease of package use' and 'clarity of instructions') were consistently linked and so were combined into a single 'ease of comprehension' scale. Item convergent validity (the degree of correlation between an item and its own scale) was 100% for 'ease of ring use' (r = 0.44) and 'satisfaction' (r = 0.58), 83% for 'ease of comprehension' (r = 0.25-0.62) and 67% (r = 0.38-0.54) for 'sexual comfort', but 0% for 'cycle-related characteristics' (r = 0.31). Item discriminant validity (the degree to which an item correlates with its own scale compared with other scales) was >/=96% for all dimensions. Internal consistency reliability was acceptable for all dimensions (adjusted Cronbach's alpha coefficient >0.70). Satisfaction was higher than in the complementary groups for respondents who had no adverse events, chose NuvaRing as the best method of contraception or completed the study; this indicated good known groups validity. Low satisfaction with the method was a good predictor of early discontinuation after cycle 3, indicating that the questionnaire had good predictive validity., Conclusions: The acceptability questionnaire has good psychometric properties and can predict early discontinuation of the NuvaRing vaginal ring method of contraception.
- Published
- 2004
- Full Text
- View/download PDF
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