49 publication(s) trouvée(s)
Article scientifique
Are morbidity and mortality estimates from randomized controlled trials externally valid? A comparison of outcomes among infants enrolled into an RCT or a cohort study in Botswana
BACKGROUND: The external validity of the randomized controlled trial (RCT) refers to the extent to which the results of the …
Article scientifique
Joint modelling of multivariate longitudinal clinical laboratory safety outcomes, concomitant medication and clinical adverse events: application to artemisinin-based treatment during pregnancy clinical trial
BACKGROUND: In drug trials, clinical adverse events (AEs), concomitant medication and laboratory safety outcomes are repeatedly collected to support drug …
Article scientifique
Spatial data analysis of malnutrition among children under-five years in Ethiopia
BACKGROUND: Childhood malnutrition is a major cause of child mortality under the age of 5 in the sub-Saharan Africa region. …
Article scientifique
Use of machine learning techniques to identify HIV predictors for screening in sub-Saharan Africa
AIM: HIV prevention measures in sub-Saharan Africa are still short of attaining the UNAIDS 90-90-90 fast track targets set in …
Article scientifique
Validity of using mobile phone surveys to evaluate community health worker program in Mali
BACKGROUND: The monitoring and evaluation of public health programs based on traditional face-to-face interviews in hard-to-reach and unstable regions present …
Article scientifique
Telephone peer recruitment and interviewing during a respondent-driven sampling (RDS) survey: feasibility and field experience from the first phone-based RDS survey among men who have sex with men in Côte d’Ivoire
BACKGROUND: Many respondent-driven sampling (RDS) methodologies have been employed to investigate hard-to-reach populations; however, these methodologies present some limits. We …
Article scientifique
Flexible modelling of risk factors on the incidence of pneumonia in young children in South Africa using piece-wise exponential additive mixed modelling
INTRODUCTION: Recurrent episodes of pneumonia are frequently modeled using extensions of the Cox proportional hazards model with the underlying assumption …
Article scientifique
Short-term real-time prediction of total number of reported COVID-19 cases and deaths in South Africa: a data driven approach
BACKGROUND: The rising burden of the ongoing COVID-19 epidemic in South Africa has motivated the application of modeling strategies to …
Article scientifique
Time series prediction of under-five mortality rates for Nigeria: comparative analysis of artificial neural networks, Holt-Winters exponential smoothing and autoregressive integrated moving average models
Abstract Background Accurate forecasting model for under-five mortality rate (U5MR) is essential for policy actions and planning. While studies have …
Article scientifique
Combining the theory of change and realist evaluation approaches to elicit an initial program theory of the MomConnect program in South Africa
BACKGROUND: One of the Sustainable Development Goals is to reduce the global maternal mortality ratio to less than 70 per …
Article scientifique
Analytical methods used in estimating the prevalence of HIV/AIDS from demographic and cross-sectional surveys with missing data: a systematic review
BACKGROUND: Sero- prevalence studies often have a problem of missing data. Few studies report the proportion of missing data and …
Article scientifique
Comparison of retention in observational cohorts and nested simulated HIV vaccine efficacy trials in the key populations in Uganda
BACKGROUND: Outcomes in observational studies may not best estimate those expected in the HIV vaccine efficacy trials. We compared retention …
Article scientifique
Using research networks to generate trustworthy qualitative public health research findings from multiple contexts
BACKGROUND: Qualitative research networks (QRNs) bring together researchers from diverse contexts working on multi-country studies. The networks may themselves form …
Article scientifique
Heckman-type selection models to obtain unbiased estimates with missing measures outcome: theoretical considerations and an application to missing birth weight data
BACKGROUND: In low-income settings, key outcomes such as biomarkers or clinical assessments are often missing for a substantial proportion of …
Article scientifique
Reporting guideline for priority setting of health research (REPRISE)
BACKGROUND: Research priority setting with stakeholders can help direct the limited resources for health research toward priority areas of need. …
Article scientifique
Acceptability and barriers to implementation of N-of-1 tests in Ethiopia - a qualitative study
BACKGROUND: Locally produced generic drugs offer a cost-effective alternative to imported drugs to treat patients in Ethiopia. However, due to …
Article scientifique
The influence of interviewers on survey responses among female sex workers in Zambia
BACKGROUND: Interviewers can substantially affect self-reported data. This may be due to random variation in interviewers' ability to put respondents …
Article scientifique
Sample size calculation for estimating key epidemiological parameters using serological data and mathematical modelling
BACKGROUND: Our work was motivated by the need to, given serum availability and/or financial resources, decide on which samples to …
Article scientifique
A semi-parametric mixed models for longitudinally measured fasting blood sugar level of adult diabetic patients
BACKGROUND: At the diabetic clinic of Jimma University Specialized Hospital, health professionals provide regular follow-up to help people with diabetes …
Article scientifique
Purposive sampling in a qualitative evidence synthesis: a worked example from a synthesis on parental perceptions of vaccination communication
BACKGROUND: In a qualitative evidence synthesis, too much data due to a large number of studies can undermine our ability …