To calculate this sample size, power calculations were conducted using simulations in Stata. Having two levels of clustering (region and village levels), two intracluster correlation (ICC) levels were used for power calculations, both based on the 2010 DHS data for women in Burkina Faso. The DHS data revealed a modern contraceptive prevalence rate (mCPR) of 9% among women of reproductive age (both in union and single) in rural areas and regions where the study takes place.