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Validation and reliability of the Abbreviated World Health Organization Quality of Life Instrument (WHOQOL-BREF) in the hospitalized trauma population
- Source :
- Injury, 49(10), 1796-1804. Elsevier Limited, Injury, 49(10), 1796-1804. Elsevier Ltd.
- Publication Year :
- 2018
-
Abstract
- Introduction While the number of trauma patients surviving their injury increase, it is important to measure Quality of Life (QoL). The Abbreviated World Health Organization Quality of Life (WHOQOL-BREF) questionnaire can be used to assess QoL. However, its psychometric properties in trauma patients are unknown and therefore, we aimed to investigate the validity and reliability of the WHOQOL-BREF for the hospitalized trauma population. Methods Data were derived from the Brabant Injury Outcome Surveillance. Floor and ceiling effects and missing values of the WHOQOL-BREF were examined. Confirmatory factor analysis (CFA) was performed to examine the underlying 4 dimensions (i.e. physical, psychological, social and environmental) of the questionnaire. Cronbach’s alpha (CA) was calculated to determine internal consistency. In total, 42 hypotheses were formulated to determine construct validity and 6 hypotheses were created to determine discriminant validity. To determine construct validity, Spearman’s correlations were calculated between the WHOQOL-BREF and the EuroQol-five-dimension-3-level questionnaire, the Health Utility Index Mark 2 and 3, the Hospital Anxiety and Depression Scale and the Impact of Event Scale. Discriminant validity between patients with minor injuries (i.e. Injury Severity Score (ISS)≤8) and moderate/severe injuries (i.e. ISS ≥ 9) was examined by conducting Mann-Whitney-U-tests. Results In total, 202 patients (median 63y) participated in this study with a median of 32 days (interquartile range 29–37) post-trauma. The WHOQOL-BREF showed no problematic floor and ceiling effects. The CFA revealed a moderate model fit. The domains showed good internal consistency, with the exception of the social domain. All individual items and domain scores of the WHOQOL-BREF showed nearly symmetrical distributions since mean scores were close to median scores, except of the ‘general health’ item. The highest percentage of missing values was found on the ‘sexual activity’ item (i.e. 19.3%). The WHOQOL-BREF showed moderate construct and discriminant validity since in both cases, 67% of the hypotheses were confirmed. Conclusion The present study provides support for using the WHOQOL-BREF for the hospitalized trauma population since the questionnaire appears to be valid and reliable. The WHOQOL-BREF can be used to assess QoL in a heterogeneous group of hospitalized trauma patients accurately. Trail registration ClinicalTrials.gov identifier: NCT02508675
- Subjects :
- Male
Validity
Injury
0302 clinical medicine
Quality of life
Sickness Impact Profile
Medicine
030212 general & internal medicine
SCALE
General Environmental Science
education.field_of_study
WOMEN
Middle Aged
Confirmatory factor analysis
humanities
Hospitalization
DEPRESSIVE SYMPTOMS
Injury Severity Score
Female
Clinical psychology
Adult
Psychometrics
QoL questionnaire
Population
QUESTIONNAIRE
World Health Organization
PATIENT
Trauma
03 medical and health sciences
Young Adult
Cronbach's alpha
Humans
OLDER-PEOPLE
education
Aged
business.industry
SHORT-FORM
Discriminant validity
Construct validity
Reproducibility of Results
WHOQOL-BREF
Cross-Sectional Studies
PSYCHOMETRIC PROPERTIES
General Earth and Planetary Sciences
Wounds and Injuries
business
Factor Analysis, Statistical
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 00201383
- Volume :
- 49
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Injury
- Accession number :
- edsair.doi.dedup.....31a1d272d9dd29250a6c4a931b77e5ae