Table 1. Countries and surveys in the sample.

			Survey years
	N	Number of surveys	1990–1994	1995–1999	2000–2004	2005–2009	2010–2014
Benin	38,199	4		1996	2001	2006	2011
Burkina Faso	35,405	4	1992	1998	2003		2010
Cameroon	28,930	4	1991	1998	2004		2011
Cote d'Ivoire	17,563	3	1994	1998			2011
Ethiopia	30,443	3			2000	2005	2010
Ghana	18,790	4	1993	1998	2003	2008
Guinea	20,359	3		1999		2005	2012
Kenya	29,082	4	1993	1998	2003	2008
Madagascar	30,229	3	1997		2003	2008
Malawi	41,605	4	1992		2000, 2004		2010
Mali	44,687	4		1995	2001	2006	2012
Mozambique	29,503	3		1997	2003		2011
Namibia	23,626	4	1992		2000	2006	2013
Niger	29,087	3		1998		2006	2012
Nigeria	76,737	4	1990		2003	2008	2013
Rwanda	24,307	4	1992		2000	2005	2010
Senegal	49,189	5	1997			2005	2010, 2012, 2014
Tanzania	32,920	4	1996	1999	2004	2009
Uganda	27,951	4		1995	2000	2006	2011
Zambia	35,043	4		1996	2001	2007	2013
Zimbabwe	30,853	4	1994	1999		2005	2010
TOTAL	694,508

Source: Authors’ calculation based on DHS data.