22 results on '"Tomiwa, T"'
Search Results
2. The Complementary Role of UI-LISA in Statistical Training and Capacity Building at the University of Ibadan, Nigeria
- Author
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Adepoju, Adedayo A., primary, Olubusoye, Olusanya E., additional, Ogundunmade, Tayo P., additional, Oyelakin, Tomiwa T., additional, and Robert, Bbosa, additional
- Published
- 2022
- Full Text
- View/download PDF
3. 'It was almost like it's set up for people to fail' A qualitative analysis of experiences and unmet supportive needs of people with Long COVID.
- Author
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McNabb, KC, Bergman, AJ, Smith-Wright, R, Seltzer, J, Slone, SE, Tomiwa, T, Alharthi, A, Davidson, PM, Commodore-Mensah, Y, Ogungbe, O, McNabb, KC, Bergman, AJ, Smith-Wright, R, Seltzer, J, Slone, SE, Tomiwa, T, Alharthi, A, Davidson, PM, Commodore-Mensah, Y, and Ogungbe, O
- Abstract
BACKGROUND: Almost twenty percent of adults with COVID-19 develop Long COVID, leading to prolonged symptoms and disability. Understanding the supportive needs of people with Long COVID is vital to enacting effective models of care and policies. DESIGN/METHODS: This qualitative sub-study explored the experiences of people with Long COVID and their unmet needs. Participants enrolled in a larger study to evaluate the post-acute cardiovascular impacts of COVID-19 were invited to participate in subsequent in-depth interviews. Participants were enrolled purposively until saturation at 24 participants. Data were analyzed using thematic content analysis. RESULTS: Participants focused on adaptations to life with Long COVID and their unmet needs in different life spheres. Three domains, 1) occupational and financial; 2) healthcare-related; and 3) social and emotional support, emerged as areas affecting quality of life. Although participants were motivated to return to work for financial and personal reasons, Long COVID symptoms often resulted in the inability to perform tasks required by their existing jobs, and unemployment. Those who maintained employment through employer accommodations still needed additional support. Participants encountered diagnostic challenges, challenges in accessing specialty appointments, insurance loopholes, high healthcare costs, and medical skepticism. Existing social networks provided support for completing daily tasks; however, those with Long COVID typically turned to others with similar lived experiences for emotional support. Participants found government support programs inadequate and difficult to access in all three domains. DISCUSSION: We propose a five-pronged policy approach to support persons with Long COVID. These overarching recommendations are (1) improve public awareness of Long COVID; (2) improve clinical care quality and access; (3) implement additional school and workplace accommodations; (4) strengthen socioeconomic benefits a
- Published
- 2023
4. Statistical Literacy and Domain Experts: Evidence from UI-LISA
- Author
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Serifat A. Folorunso, Tomiwa T. Oyelakin, Oluwaseun A. Otekunrin, and Olawale B. Akanbi
- Published
- 2022
5. The Complementary Role of UI-LISA in Statistical Training and Capacity Building at the University of Ibadan, Nigeria
- Author
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Adedayo A. Adepoju, Olusanya E. Olubusoye, Tayo P. Ogundunmade, Tomiwa T. Oyelakin, and Bbosa Robert
- Published
- 2022
6. 'Living like an empty gas tank with a leak': Mixed methods study on post-acute sequelae of COVID-19.
- Author
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Kumar, S, Ogungbe, O, Slone, S, Alharthi, A, Tomiwa, T, Kumbe, B, Bergman, A, McNabb, K, Smith Wright, R, Farley, JE, Dennison Himmelfarb, CR, Cooper, LA, Post, WS, Davidson, PM, Commodore-Mensah, Y, Kumar, S, Ogungbe, O, Slone, S, Alharthi, A, Tomiwa, T, Kumbe, B, Bergman, A, McNabb, K, Smith Wright, R, Farley, JE, Dennison Himmelfarb, CR, Cooper, LA, Post, WS, Davidson, PM, and Commodore-Mensah, Y
- Abstract
BACKGROUND: The burden and presentation of post-acute sequela of SARS-CoV-2 infection (PASC) are a developing major public health concern. OBJECTIVES: To characterize the burden of PASC in community-dwelling individuals and understand the experiences of people living with PASC. METHODS: This mixed-methods study of COVID-19 positive community-dwelling persons involved surveys and in-depth interviews. Main outcome was self-report of possible PASC symptoms 3 weeks or longer after positive COVID-19 test. In-depth interviews were guided by a semi-structured interview guide with open-ended questions and probes based on emerging literature on PASC and the impact of COVID-19. RESULTS: With a survey response rate of 70%, 442 participants were included in this analysis, mean (SD) age 45.4 (16.2) years, 71% female, 12% Black/African American. Compared to those with no PASC symptoms, persons who reported PASC symptoms were more likely to be older (mean age: 46.5 vs. 42; p = 0.013), female (74.3% vs. 61.2%; p = 0.010), to have pre-existing conditions (49.6% vs. 34%; p = 0.005), and to have been hospitalized for COVID-19 (14.2% vs. 2.9%; p = 0.002). About 30% of the participants experienced severe fatigue; the proportion of persons reporting severe fatigue was 7-fold greater in those with PASC symptoms (Adjusted Prevalence Ratio [aPR] 6.73, 95%CI: 2.80-16.18). Persons with PASC symptoms were more likely to report poor quality of life (16% vs. 5%, p<0.001) and worse mental health functioning (Mean difference: -1.87 95%CI: -2.38, -1.37, p<0.001). Themes from in-depth interviews revealed PASC was experienced as debilitating. CONCLUSIONS: In this study, the prevalence of PASC among community-dwelling adults was substantial. Participants reported considerable coping difficulties, restrictions in everyday activities, invisibility of symptoms and experiences, and impediments to getting and receiving PASC care.
- Published
- 2022
7. Leveraging digital tools to enhance diversity and inclusion in clinical trial recruitment.
- Author
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Tomiwa T, Wong E, Miller HN, Ogungbe O, Byiringiro S, Plante T, and Himmelfarb CR
- Subjects
- Humans, Social Media, Electronic Health Records, Mobile Applications, Biomedical Research, Patient Selection, Clinical Trials as Topic, Cultural Diversity
- Abstract
Clinical research is pivotal in assessing the safety and efficacy of new treatments in healthcare. However, the success of such research depends on the inclusion of a diverse and representative participant sample, which is currently lacking. This lack of diversity in biomedical research participants has significant repercussions, limiting the real-world applicability and accessibility of medical interventions, especially for underrepresented groups. Barriers to diverse participation include historical mistrust, logistical challenges, and financial constraints. Recent guidelines by government agencies and funding bodies emphasize the need for diversity in clinical trials, but specific strategies for inclusive recruitment are often lacking. This paper explores the use of digital methods to enhance diversity and inclusion in research recruitment. Digital tools, such as electronic medical records, social media, research registries, and mobile applications, offer promising opportunities for reaching diverse populations. Strategies include culturally tailored messaging, collaborations with community organizations, and the use of SEO to improve visibility and engagement. However, challenges such as privacy concerns, digital literacy gaps, and ethical considerations must be addressed. The promotion of diversity in clinical research recruitment is crucial for advancing health equity. By leveraging digital tools and adopting inclusive strategies, study teams can improve the diversity of study participants, ultimately leading to more applicable and equitable healthcare outcomes., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Tomiwa, Wong, Miller, Ogungbe, Byiringiro, Plante and Himmelfarb.)
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- 2024
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8. Advancing Adolescent Health: Empowering Future Leaders and Bridging Gaps in Research and Policy.
- Author
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Pehlivanturk Kizilkan M, O'Sullivan M, Sabet F, Rivkin LE, Safitri Velies D, Delgado-Zapata RM, Akinsanya T, and Partridge SR
- Subjects
- Humans, Adolescent, Empowerment, Research, Adolescent Health, Leadership, Health Policy
- Published
- 2024
- Full Text
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9. Healthcare system barriers and facilitators to hypertension management in Ghana.
- Author
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Byiringiro S, Hinneh T, Chepkorir J, Tomiwa T, Commodore-Mensah Y, Marsteller J, Sarfo FS, Saylor MA, Assibey S, and Himmelfarb CR
- Subjects
- Humans, Ghana, Delivery of Health Care, Self-Management, Attitude of Health Personnel, Qualitative Research, Hypertension therapy, Focus Groups, Health Services Accessibility, Antihypertensive Agents therapeutic use
- Abstract
Background: Hypertension continues to pose a significant burden on the health systems in Sub-Saharan Africa (SSA). Multiple challenges at the health systems level could impact patients' blood pressure outcomes. There is a need to understand the gaps in health systems to improve their readiness to manage the rising burden of hypertension Objective: To explore health system barriers and opportunities for improved management of hypertension in Ghana, West Africa. Methods: We conducted 5 focus group discussions involving 9 health facility leaders and 24 clinicians involved in hypertension treatment at 15 primary-level health facilities in Kumasi, Ghana. We held discussions remotely over Zoom and used thematic analysis methods. Results: Four themes emerged from the focus group discussions: (1) financial and geographic inaccessibility of hypertension services; (2) facilities' struggle to maintain the supply of antihypertensive medications and providers' perceptions of suboptimal quality of insured medications; (3) shortage of healthcare providers, especially physicians; and (4) patients' negative self-management practices. Facilitators identified included presence of wellness and hypertension clinics for screening and management of hypertension at some health facilities, nurses' request for additional roles in hypertension management, and the rising positive practice of patient home blood pressure monitoring. Conclusion: Our findings highlight critical barriers to hypertension service delivery and providers' abilities to provide quality services. Health facilities should build on ongoing innovations in hypertension screening, task-shifting strategies, and patient self-management to improve hypertension control. In Ghana and other countries, policies to equip healthcare systems with the resources needed for hypertension management could lead to a high improvement in hypertension outcomes among patients., Competing Interests: Authors declare no conflict of interest., (Copyright: © 2024 The Author(s).)
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- 2024
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10. Grassroots and Digital Outreach Strategies Raise Awareness of COVID-19 Information and Research in Baltimore City.
- Author
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Miller HN, Stevens SC, Young D, Lacanienta CT, Tomiwa T, Vazquez MG, Olawole W, Zhu T, Lewis-Land C, Clark R, Peeler A, Byiringiro S, Cook B, Weston C, Bronner Y, Rich T, and Himmelfarb CR
- Subjects
- Humans, Baltimore, Hispanic or Latino, Trust, Black or African American, COVID-19, Information Dissemination
- Abstract
We aimed to disseminate reliable COVID-19 information to the Black and Latino communities of Baltimore City, Maryland, between July 2020 and December 2022. With community partners, we disseminated evidence-based COVID-19 information via grassroots and digital strategies, including Hopkins Opportunity for Participant Engagement, and connected volunteers to COVID-19 research. Using a multimodal approach facilitated dissemination of reliable information and raised awareness of research; evaluation of trust is ongoing. Robust, multimodal strategies are needed to foster trust and equity among diverse communities. ( Am J Public Health . 2024;114(S1):S69-S73. https://doi.org/10.2105/AJPH.2023.307492).
- Published
- 2024
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11. A strategic analysis of health behaviour change initiatives in Africa.
- Author
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Mogo ERI, Shanawaz S, Ademola-Popoola O, Iqbal N, Aghedo O, Ademola M, Onyemaobi N, Eniayewun A, Ademusire B, Adaramola T, Ugwu A, Obi A, Lerno A, Nwagbara J, Uwimana A, Gbadamosi E, Adebisi A, and Sako B
- Subjects
- Humans, Life Expectancy, South Africa, Educational Status, Health Behavior, Sexually Transmitted Diseases
- Abstract
Background: Changed health behaviours can contribute significantly to improved health. Consequently, significant investments have been channelled towards health behaviour change initiatives in Africa. Health behaviour change initiatives that address social, economic and environmental levers for behaviour change can create more sustained impact., Objectives: Through a scoping study of the literature, we explored the literature on behaviour change initiatives in Africa, to assess their typologies. We explored whether the availability of initiatives reflected country demographic characteristics, namely life expectancy, gross domestic product (GDP), and population sizes. Finally, we assessed topical themes of interventions relative to frequent causes of mortality., Methods: We used the Behaviour Change Wheel intervention categories to categorise each paper into a typology of initiatives. Using Pearson's correlation coefficient, we explored whether there was a correlation between the number of initiatives implemented in a country in the specified period, and socio-demographic indicators, namely, GDP per capita, total GDP, population size, and life expectancy., Results: Almost 64% of African countries were represented in the identified initiatives. One in five initiatives was implemented in South Africa, while there was a dearth of literature from Central Africa and western parts of North Africa. There was a positive correlation between the number of initiatives and GDP per capita. Most initiatives focused on addressing sexually transmitted infections and were short-term trials and/or pilots. Most initiatives were downstream focused e.g. with education and training components, while upstream intervention types such as the use of incentives were under-explored., Conclusion: We call for more emphasis on initiatives that address contextual facilitators and barriers, integrate considerations for sustainable development, and consider intra-regional deprivation.
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- 2023
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12. Linking tourist's footprint and environmental tragedy through transportation, globalization and energy choice in BIMSTEC region: Directions for a sustainable solution using novel GMM-PVAR approach.
- Author
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Jahanger A, Hossain MR, Awan A, Sunday Adebayo T, and Zubair Chishti M
- Subjects
- Humans, Renewable Energy, Economic Development, Policy, Carbon Dioxide analysis, Bays, Internationality
- Abstract
The rising temperature in the world's atmosphere is an outcome strongly linked to man-made manufactured interventions. Recreational activities in the form of tourism are such interventions that can unleash multidimensional negative externalities if not regulated properly. The Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) region has become one of the major hubs for recreational activities in the last few decades. However, the region's tourism-led environmental degradation has received scant attention in the literature. As such, this paper unveils how tourist footprint affects the region's environmental sustainability and explores potential solutions to encourage the tourism industry to be more pro-environmental. We have used the novel GMM-PVAR technique to assess how globalization, transportation, green energy, and economic growth have affected the tourism industry and carbon footprint in the BIMSTEC region from 1990 to 2019. We lean on the empirical outcomes to propose regional sustainable tourism development policies. The GMM-PVAR model indicates that renewable energy, economic growth, and the transportation sector's development positively affect the tourism industry's growth in the region. However, globalization and environmental degradation negatively influence tourists' arrival. Contrarily, transportation services, economic growth, and tourism boost the carbon footprint in the region. Although globalization and clean energy reduce carbon footprint, these indicators are insignificant, indicating that this region is still lagging in renewable energy generation and failed to reap the positive spillovers of globalization. Based on these outcomes, we propose that the region redesign its tourism industry to encourage eco-friendly tourism by leaning more on pro-environmental strategies (i.e., powering the tourism industry through the penetration of renewable energies) and tightening environmental regulations., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
13. "It was almost like it's set up for people to fail" A qualitative analysis of experiences and unmet supportive needs of people with Long COVID.
- Author
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McNabb KC, Bergman AJ, Smith-Wright R, Seltzer J, Slone SE, Tomiwa T, Alharthi A, Davidson PM, Commodore-Mensah Y, and Ogungbe O
- Subjects
- Adult, Humans, Quality of Life, Social Work, Workplace, Post-Acute COVID-19 Syndrome, COVID-19 epidemiology
- Abstract
Background: Almost twenty percent of adults with COVID-19 develop Long COVID, leading to prolonged symptoms and disability. Understanding the supportive needs of people with Long COVID is vital to enacting effective models of care and policies., Design/methods: This qualitative sub-study explored the experiences of people with Long COVID and their unmet needs. Participants enrolled in a larger study to evaluate the post-acute cardiovascular impacts of COVID-19 were invited to participate in subsequent in-depth interviews. Participants were enrolled purposively until saturation at 24 participants. Data were analyzed using thematic content analysis., Results: Participants focused on adaptations to life with Long COVID and their unmet needs in different life spheres. Three domains, 1) occupational and financial; 2) healthcare-related; and 3) social and emotional support, emerged as areas affecting quality of life. Although participants were motivated to return to work for financial and personal reasons, Long COVID symptoms often resulted in the inability to perform tasks required by their existing jobs, and unemployment. Those who maintained employment through employer accommodations still needed additional support. Participants encountered diagnostic challenges, challenges in accessing specialty appointments, insurance loopholes, high healthcare costs, and medical skepticism. Existing social networks provided support for completing daily tasks; however, those with Long COVID typically turned to others with similar lived experiences for emotional support. Participants found government support programs inadequate and difficult to access in all three domains., Discussion: We propose a five-pronged policy approach to support persons with Long COVID. These overarching recommendations are (1) improve public awareness of Long COVID; (2) improve clinical care quality and access; (3) implement additional school and workplace accommodations; (4) strengthen socioeconomic benefits and social services; and (5) improve research on Long COVID., (© 2023. The Author(s).)
- Published
- 2023
- Full Text
- View/download PDF
14. Brain computed tomography perfusion analysis in HIV-seropositive adults with and without neurocognitive impairment in Nigeria: outcomes and challenges of a pilot study.
- Author
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Ogbole G, Efidi R, Odo J, Okorie C, Makanjuola T, Adeyinka A, Sammet C, Berzins B, Onoja A, Ogunniyi A, Ragin A, and Taiwo B
- Subjects
- Humans, Adult, Pilot Projects, Case-Control Studies, Nigeria, Perfusion, Cerebrovascular Circulation physiology, Tomography, X-Ray Computed methods, Brain blood supply
- Abstract
Introduction: the significance of cerebrovascular disease in HIV-associated neurocognitive disorder (HAND) in a homogeneous black population has not yet been determined. This incident case-control study used CT perfusion imaging to quantify and compare regional cerebral blood flow parameters in neuro-cognitively impaired and unimpaired HIV+ participants of the Ibadan Cohort on Neuro AIDS (ICON) in Nigeria., Methods: this was an incident case-control study consisting of twenty-seven HIV+ adults, classified based on Frascati criteria into neurocognitive impaired (n=18) and unimpaired (n=9) groups, who had brain computed tomographic perfusion (CTP) with a 64-slice Toshiba T scanner. The standard deviation (SD) of regional mean transit time (MTT), cerebral blood flow (CBF), and cerebral blood volume (CBV) values were calculated for bilateral basal ganglia (BG), frontal, parietal, temporal, and occipital regions from CT perfusion maps. The regional mean values and variability (SD) in the CTP measures were compared in the groups using an independent student t-test., Results: differentially higher variability in the bilateral CBF measures in the parietal (right; OR = 1.14, x̄ =5.61, p=0.041, CI=0.27-11.35/left; OR = 1.16, x̄=7.01, p=0.03, CI=5.6-13.47) and time to peak (TTP) measures in the basal ganglia (right; OR = 3.78, x̄=0.88, p=0.032, CI=0.081-1.67/left; OR = 2.44, x̄=1.48, p=0.020, CI=0.26-2.71) and occipital (right; OR = 2.18, x̄=1.32, p=0.018, CI=0.25-2.38/left; OR = 1.93, x̄=1.08, p=0.034, CI=0.086-2.06) regions were observed in the cognitively impaired group compared to the unimpaired group., Conclusion: the study evidence suggests that alterations in cerebral perfusion implicated in HIV-associated neurocognitive disorder may be possibly demonstrated using CTP, a readily available resource in most African countries saddled with the highest burden of HIV., Competing Interests: The authors declare no competing interests., (Copyright: Godwin Ogbole et al.)
- Published
- 2023
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- View/download PDF
15. Wiggle and Shake: Managing and Exploiting Conformational Dynamics during Proteasome Biogenesis.
- Author
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Betancourt D, Lawal T, and Tomko RJ Jr
- Subjects
- Protein Conformation, Models, Molecular, Molecular Chaperones metabolism, Humans, Cryoelectron Microscopy, Proteolysis, Ubiquitin metabolism, Proteasome Endopeptidase Complex biosynthesis, Proteasome Endopeptidase Complex chemistry, Proteasome Endopeptidase Complex metabolism, Proteasome Endopeptidase Complex ultrastructure
- Abstract
The 26S proteasome is the largest and most complicated protease known, and changes to proteasome assembly or function contribute to numerous human diseases. Assembly of the 26S proteasome from its ~66 individual polypeptide subunits is a highly orchestrated process requiring the concerted actions of both intrinsic elements of proteasome subunits, as well as assistance by extrinsic, dedicated proteasome assembly chaperones. With the advent of near-atomic resolution cryo-electron microscopy, it has become evident that the proteasome is a highly dynamic machine, undergoing numerous conformational changes in response to ligand binding and during the proteolytic cycle. In contrast, an appreciation of the role of conformational dynamics during the biogenesis of the proteasome has only recently begun to emerge. Herein, we review our current knowledge of proteasome assembly, with a particular focus on how conformational dynamics guide particular proteasome biogenesis events. Furthermore, we highlight key emerging questions in this rapidly expanding area.
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- 2023
- Full Text
- View/download PDF
16. "Living like an empty gas tank with a leak": Mixed methods study on post-acute sequelae of COVID-19.
- Author
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Ogungbe O, Slone S, Alharthi A, Tomiwa T, Kumbe B, Bergman A, McNabb K, Smith Wright R, Farley JE, Dennison Himmelfarb CR, Cooper LA, Post WS, Davidson PM, and Commodore-Mensah Y
- Subjects
- Adult, Humans, Female, Middle Aged, Male, Quality of Life, SARS-CoV-2, Disease Progression, Fatigue epidemiology, Fatigue etiology, Self Report, COVID-19 complications, COVID-19 epidemiology
- Abstract
Background: The burden and presentation of post-acute sequela of SARS-CoV-2 infection (PASC) are a developing major public health concern., Objectives: To characterize the burden of PASC in community-dwelling individuals and understand the experiences of people living with PASC., Methods: This mixed-methods study of COVID-19 positive community-dwelling persons involved surveys and in-depth interviews. Main outcome was self-report of possible PASC symptoms 3 weeks or longer after positive COVID-19 test. In-depth interviews were guided by a semi-structured interview guide with open-ended questions and probes based on emerging literature on PASC and the impact of COVID-19., Results: With a survey response rate of 70%, 442 participants were included in this analysis, mean (SD) age 45.4 (16.2) years, 71% female, 12% Black/African American. Compared to those with no PASC symptoms, persons who reported PASC symptoms were more likely to be older (mean age: 46.5 vs. 42; p = 0.013), female (74.3% vs. 61.2%; p = 0.010), to have pre-existing conditions (49.6% vs. 34%; p = 0.005), and to have been hospitalized for COVID-19 (14.2% vs. 2.9%; p = 0.002). About 30% of the participants experienced severe fatigue; the proportion of persons reporting severe fatigue was 7-fold greater in those with PASC symptoms (Adjusted Prevalence Ratio [aPR] 6.73, 95%CI: 2.80-16.18). Persons with PASC symptoms were more likely to report poor quality of life (16% vs. 5%, p<0.001) and worse mental health functioning (Mean difference: -1.87 95%CI: -2.38, -1.37, p<0.001). Themes from in-depth interviews revealed PASC was experienced as debilitating., Conclusions: In this study, the prevalence of PASC among community-dwelling adults was substantial. Participants reported considerable coping difficulties, restrictions in everyday activities, invisibility of symptoms and experiences, and impediments to getting and receiving PASC care., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2022 Ogungbe et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2022
- Full Text
- View/download PDF
17. [The role of nurses in the prevention and post-traumatic management of domestic violence in South Africa].
- Author
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Fapohunda T, Stiegler N, Masiagwala P, and Bouchard JP
- Subjects
- Child, Female, Humans, South Africa, Prevalence, Domestic Violence prevention & control
- Abstract
The World Health Organization defines domestic violence as the deliberate use of force, power, threats, against a person or group of people, which may result in death or physical injury. As such, it usually results in physical, economic, psychological, sexual or emotional harm. This study assessed the prevalence and contributing factors of domestic violence among women and children in South Africa to better understand the factors surrounding domestic violence using the 2016 Demographic and Health Survey. Because domestic violence is a public health issue, nurses play a central role in prevention and post-trauma care, including within emergency and psychiatric services., (Copyright © 2022. Publié par Elsevier Masson SAS.)
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- 2022
- Full Text
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18. DNA microarray analysis of Staphylococcus aureus from Nigeria and South Africa.
- Author
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Shittu AO, Adesoji T, and Udo EE
- Abstract
Staphylococcus aureus is an important human pathogen with an arsenal of virulence factors and a propensity to acquire antibiotic resistance genes. The understanding of the global epidemiology of S. aureus through the use of various typing methods is important in the detection and tracking of novel and epidemic clones in countries and regions. However, detailed information on antibiotic resistance and virulence genes of S. aureus, and its population structure is still limited in Africa. In this study, S. aureus isolates collected in South Africa (n = 38) and Nigeria (n = 2) from 2001-2004 were characterized by spa typing and DNA microarray. The combination of these two methods classified the isolates into seven spa types and three clonal complexes (CCs) i.e. t064-CC8 (n = 17), t037-CC8 (n = 8), t1257-CC8 (n = 6), t045-CC5 (n = 5), t951-CC8 (n = 1), t2723-CC88 (n = 1), t6238-CC8 (n = 1), and untypeable-CC8 (n = 1). A high percentage agreement (>95%) and kappa coefficient (>0.60) was largely observed with antibiotic susceptibility testing and DNA microarray, indicating substantial agreement. Some antibiotic and virulence gene markers were associated with specific clones. The detection of the collagen-binding adhesion (cna) gene was unique for t037-CC8-MRSA while the enterotoxin gene cluster (egc) and staphylococcal complement inhibitor (scn) gene were identified with t045-CC5-MRSA. Moreover, the combination of genes encoding enterotoxins (entA, entB, entK, entQ) was noted with most of the CC8 isolates. The t045-CC5-MRSA clone was positive for the mercury resistance (mer) operon. DNA microarray provides information on antibiotic resistance and virulence gene determinants and can be a useful tool to identify gene markers for specific S. aureus clones in Africa., Competing Interests: On behalf of other co-authors, I declare no competing interest in the design, implementation, analysis, interpretation of data and write-up of the study titled ‘DNA microarray analysis of Staphylococcus aureus from Nigeria and South Africa’.
- Published
- 2021
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- View/download PDF
19. Comparing microplastics contaminants in (dry and raining) seasons for Ox- Bow Lake in Yenagoa, Nigeria.
- Author
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Oni BA, Ayeni AO, Agboola O, Oguntade T, and Obanla O
- Subjects
- Environmental Monitoring methods, Nigeria, Seasons, Geologic Sediments chemistry, Lakes chemistry, Microplastics analysis, Polyethylene analysis, Rain, Water Pollutants, Chemical analysis
- Abstract
The occurrence and distribution of microplastics (MPs) for two seasons (dry and raining) were investigated based on 10 sections of OX- Bow Lake Yenagoa, Nigeria for surface water and sediments. MPs were abundant in colour and dominated by fibrous items. For dry season, Polyethylene terephthalate (PET) and Plasticised polyvinyl chloride (Plasticised PVC) were the predominant MPs; they both account for 72.63% and 10.9% of surface water and sediment samples. The raining season accounted for Plasticised (PVC) 81.5% and low-density polyethylene 4.2% respectively. The raining and dry seasons MPs were characterise by μ-FTIR. Beads and pellets were most common MP shapes in both water and sediment samples for the two seasons. The results showed that there is high presence of MPs in OX -Bow Lake., Competing Interests: Declaration of competing interests The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier Inc. All rights reserved.)
- Published
- 2020
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20. Experimental dataset of enhanced rheological properties and lubricity of Nigerian bentonite mud using kelzan® xcd polymer and identifying it optimal combination.
- Author
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Oguntade T, Rotimi O, Mojisole A, Solomon A, and Angye G
- Abstract
The experimental dataset in this article are for improved rheological properties and lubricity of Nigerian bentonite mud using Kelzan® xcd polymer and identifying it optimal combination. For this study, water base mud was formulated using a Nigerian bentonite and a statistical based method was used to analyze the rheological and lubricity properties of the drilling fluid, when enhanced with kelzan® xcd polymer. The significant and interaction level of these factors were closely observed on the mud properties test that were conducted. The use of response surface design was engaged to analyze the influence of bentonite quantity and the quantity of kelzan® xcd polymer on the lubricity and rheological properties of the mud. Minitab 17 (Minitab Inc. USA) was used for the response surface design. The p -values were used to determine which of the factors in the model are statistically significant, which was compared to α-level (0.05). The p -values for the quantity of kelzan® xcd polymer are 0, 0, and 0.007 for Apparent viscosity (cp), Yield point (Ib/100 ft^2), Plastic viscosity (cp) respectively. All these values are lesser than the α-level (0.05), which means that the effect of kelzan® xcd polymer is significant on the model. While the effect of Bentonite content and the interaction between Bentonite content and kelzan® xcd polymer are insignificant because their p -values are higher than the -level (0.05).
- Published
- 2018
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21. Gaps in Hypertension Guidelines in Low- and Middle-Income Versus High-Income Countries: A Systematic Review.
- Author
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Owolabi M, Olowoyo P, Miranda JJ, Akinyemi R, Feng W, Yaria J, Makanjuola T, Yaya S, Kaczorowski J, Thabane L, Van Olmen J, Mathur P, Chow C, Kengne A, Saulson R, Thrift AG, Joshi R, Bloomfield GS, Gebregziabher M, Parker G, Agyemang C, Modesti PA, Norris S, Ogunjimi L, Farombi T, Melikam ES, Uvere E, Salako B, and Ovbiagele B
- Subjects
- Adult, Aged, Developed Countries, Developing Countries, Health Care Costs, Health Personnel economics, Humans, Hypertension diagnosis, Hypertension epidemiology, Internationality, Middle Aged, Health Services Accessibility economics, Hypertension drug therapy, Income, Practice Guidelines as Topic
- Published
- 2016
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22. Impact of internal metallic ports in temporary tissue expanders on postmastectomy radiation dose distribution.
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Chen SA, Ogunleye T, Dhabbaan A, Huang EH, Losken A, Gabram S, Davis L, and Torres MA
- Subjects
- Adult, Breast Neoplasms surgery, Female, Humans, Mastectomy, Metals, Middle Aged, Radiotherapy Dosage, Radiotherapy Planning, Computer-Assisted methods, Breast Neoplasms radiotherapy, Mammaplasty instrumentation, Tissue Expansion Devices
- Abstract
Purpose: Temporary tissue expanders (TTE) with an internal magnetic metal port (IMP) have been increasingly used for breast reconstruction in post-mastectomy patients who receive radiation therapy (XRT). We evaluated XRT plans of patients with IMP to determine its effect on XRT dose distribution., Methods and Materials: Original treatment plans with CT simulation scans of 24 consecutive patients who received XRT (ORI), planned without heterogeneity corrections, to a reconstructed breast containing an IMP were used. Two additional treatment plans were then generated: one treatment plan with the IMP assigned the electron density of the rare earth magnet, nickel plated neodymium-iron-boron (HET), and a second treatment plan with the IMP assigned a CT value of 1 to simulate a homogeneous breast without an IMP (BRS). All plans were prescribed 50 Gy to the reconstructed breast (CTV)., Results: CTV coverage by 50 Gy was significantly lower in the HET (mean 87.7% CTV) than in either the ORI (mean 99.7% CTV, P<.001) or BRS plans (mean 95.0% CTV, P<.001). The effect of the port was more pronounced on CT slices containing the IMP with prescription dose coverage of the CTV being less in the HET than in either ORI (mean difference 33.6%, P<.01) or BRS plans (mean difference 30.1%, P<.001). HET had a less homogeneous and conformal dose distribution than BRS or ORI., Conclusion: IMPs increase dose heterogeneity and reduce dose to the breast CTV through attenuation of the beam. For optimal XRT treatment, heterogeneity corrections should be used in XRT planning for patients with TTE with IMP, as the IMP impacts dose distribution., (Copyright © 2013 Elsevier Inc. All rights reserved.)
- Published
- 2013
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