«But information about average treatment effects is an insufficient basis to make recommendations.» (sciencenews.org)
This Brief summarizes findings from the impact evaluation of the Ghana Livelihood Empowerment Against Poverty (LEAP) programme on schooling outcomes overall and for various subgroups: by sex, age group and cognitive ability.The findings underscore the importance of going beyond average treatment effects to analyse impacts by subgroup in order to unpack the programme effect (unicef-irc.org)
The size of the treatment effects varied considerably in different trials, and average treatment effects may not be applicable in different settings. (cochranelibrary-wiley.com)