“…A wide variety of study designs have been used to examine CHW performances in SSA based on the present evidence base. Of the 13 eligible studies, 4 were non-randomized community trials (non-RCTs) [ 19 – 22 ], 3 descriptive cross-sectional studies [ 4 , 15 , 18 ], 2 descriptive longitudinal studies [ 23 , 24 ], 1 pilot intervention [ 14 ], 1 randomized control trial [ 17 ] and 2 case study [ 10 , 25 ]. Most of the studies had a study period of 12–13 months [ 15 , 21 , 23 , 25 ] and 1 had a study period of 3 years [ 20 ].…”