Your answer is in the study[1] (see section 1D) which was modeled to align broadly with the Rwanda Demographic and Health Survey[2] [1] http://www.sciencemag.o

Your answer is in the study[1] (see section 1D) which was modeled to align broadly with the Rwanda Demographic and Health Survey[2] [1] http://www.sciencemag.org/content/suppl/2015/11/24/350.6264.1073.DC1/Blumenstock.SM.pdf http://www.sciencemag.org/content/suppl/2015/11/24/350.6264.... [2] http://dhsprogram.com/publications/publication-FR259-DHS-Final-Reports.cfm http://dhsprogram.com/publications/publication-FR259-DHS-Fin...