The age of opportunity: prevalence of key risk factors among adolescents 10–19 years of age in nine communities in sub-Saharan Africa

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Abstract 

Objective: To measure health-related behaviours and risk factors among sub-Saharan African adolescents. methods Cross-sectional study in nine communities in Burkina Faso, Ethiopia, Eswatini, Ghana, Nigeria, Tanzania and Uganda between 2015 and 2017. Community-representative samples of males and females 10–19 years of age were selected. All communities used a uniform questionnaire that was adapted from the WHO Global School-based Student Health Survey. Weighted prevalence estimates and 95% confidence intervals were calculated for each indicator and stratified by age and sex using SAS version 9.4. All prevalence estimates were pooled across communities through randomeffects meta-analyses in Stata version 14. results A total of 8075 adolescents participated in the study. We observed a high prevalence of inadequate fruit consumption (57–63%) and low physical activity (82–90%); a moderate prevalence of inadequate vegetable consumption (21–31%), unprotected last sex (38–45%), age at first sex

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