“…The most studied area for included interventions is Sub-Saharan Africa (n = 13), representing almost 40 per cent of the included studies. We included five studies of interventions that took place in Uganda (Björkman et al, 2017(Björkman et al, , 2009incorporating Donato & Mosqueira, 2016;Fiala & Premand, 2017;Grossman et al, 2017;Grossman & Michelitch, 2018;Humphreys & Weinstein, 2012), two from the Democratic Republic of Congo (DRC) (Humphreys et al, 2014;Palladium, 2015), one each respectively from Ghana (Alhassan et al, 2016), Tanzania , Madagascar (Rasamoelina et al, 2015), Malawi (Gullo et al, 2017), Namibia (Bandyopadhyay et al, 2004) and a study that took place in both Kenya and Guinea (Bradley & Igras, 2005).…”