ABSTRACT
Background. There is still limited to no evidence on the independent and interactive effects of HIV infection, disease stage, baseline disease severity and other important comorbidities on mortality risk among young children treated for severe acute malnutrition (SAM) in South Africa (SA, using the World Health Organization (WHO) recommended treatment modality. Objectives. To determine baseline clinical characteristics among children with SAM and assess whether HIV infection, disease stage, critical illness at baseline and other comorbidities independently and interactively contributed to excess mortality in this sample. Methods. We followed up children aged 6 - 60 months, who were admitted with and treated for SAM at two rural hospitals in SA, and retrospectively reviewed their treatment records to abstract data on their baseline clinical characteristics and treatment outcomes. In total, 454 children were included in the study. Descriptive statistical tests were used to summarise patients' clinical characteristics. Kaplan-Meier failure curves were created for key characteristics and compared statistically using log-rank tests. Univariate and multivariate Cox regression was used to estimate independent and interactive effects. Results. The combined case fatality rate was 24.4%. HIV infection, clinical disease stage, the presence of lower respiratory tract infection, marasmus and disease severity at baseline were all independently associated with excess mortality. The critical stage for higher risk of death was when cases were admitted at WHO stage III. The interactions of two or three of these characteristics were associated with increased risk of death when compared with having none, with HIV infection and critical illness showing the greatest risk (hazard ratio 22, p<0.001). Conclusion. The high HIV prevalence rate in the study setting and the resultant treatment outcomes support the notion that the WHO treatment guidelines should be revised to ensure that mechanisms for effective treatment of HIV comorbidity in SAM are in place. However, a much more rigorous study is warranted to verify this conclusion
Subject(s)
Critical Illness , HIV Infections , Malnutrition , South Africa , World Health OrganizationABSTRACT
Background. There is a shortage of biostatistics expertise at the University of KwaZulu-Natal (UKZN); Durban; South Africa and in the African region. This constrains the ability to carry out high-quality health research in the region.Objectives. To quantitatively and qualitatively evaluate a programme designed to improve the conceptual and critical understanding of bio statistical concepts of UKZN health researchers.Methods. A 40-hour workshop in biostatistical reasoning was conducted annually between 2012 and 2015. The workshops were structured around interpretation and critical assessment of nine articles from the medical literature; with a mix of in-class sessions and small group discussions. Quantitative evaluation of the knowledge gained from the workshops was carried out using a pre- and post-workshop quiz; and qualitative evaluation of the workshop process was done using a mid-workshop questionnaire and focus group discussions.Results. For each year that the workshop was conducted; post-workshop quiz scores were significantly higher than pre-workshop scores. When quiz assessments from all 4 years of training were combined; the pretest median score was 55% (interquartile range (IQR) 40 - 62%) and the post-test median score was 68% (IQR 62 - 76%); with p0.0001 for the overall comparison of pre- v. post-scores. There was a general consensus among participants that the workshop improved their reasoning skills in biostatistics. Participants also recognised the value of the workshop in building biostatical capacity at UKZN. Conclusion. The workshops were well received and improved the critical and conceptual understanding of the participants. This education mode offers the opportunity for health researchers to advance their knowledge in settings where there are few professional biostatistician collaborators
Subject(s)
Biostatistics/education , Education, Medical , Evaluation Studies as Topic , Faculty , South Africa , StudentsABSTRACT
Background. There is a dire need for medical schools in South Africa to train medical doctors who have the capacity and willingness to work in primary healthcare facilities; particularly in rural areas. Objectives. To assess the effect of students' gender; race; place of birth and place of high school completion on their choice of training site location and to assess the extent to which the training programme enhanced students' learning experiences relevant to primary care across training sites. Methods. A survey design involving six cohorts of 4th-year undergraduate medical students (N=187) who were part of the 2013 Family Medicine rotation at the Nelson R Mandela School of Medicine. Self-administered questionnaires were completed by students at the end of each rotation. Data analyses involved descriptive computations and inferential statistical tests; including non-parametric tests for group comparison and generalised polynomial logistic regression. Results. Students believed that their knowledge and skills relevant to primary care increased after the rotation (p0.0001). There were statistically significant differences between rural and urban sites on certain measures of perceived programme effectiveness. Male students were less likely to choose urban sites. Black students were less likely to choose rural sites compared with their white and Indian counterparts; as were students who attended rural high schools (odds ratio (OR) 9.3; p0.001). Students from a rural upbringing were also less likely to choose rural sites (OR 14; p0.001). Conclusion. Based on the findings; an objective approach for student allocation that considers students' background and individual-level characteristics is recommended to maximise learning experiences