The ECWG has produced a brief on measuring savings group participation rates in Africa. To estimate women’s saving group participation rates in Kenya, Nigeria, Tanzania, and Uganda, the ECWG conducted an analysis of two established data sets on financial inclusion; FinScope and Financial Inclusion Insights (FII). This research brief reviews the findings of the ECWG’s analysis, including an assessment of the trade-offs across different data on savings group participation. The brief also provides recommendations on how triangulation of data sources could further improve the utility of research on savings groups for implementers and policymakers.