Table 2. Sample sizes for all groups and by health-service target population in areas served by MHOs and a control area without MHOs, Mali, 2003–2004.

Health service target	Bla				Sikassoa			Overall			Total
	M	NM	C		M	NM		M	NM	C
Households	268	341	676		549	446		817	787	676	2 280
Individuals in households	2 113	2 157	4 473		3 663	2 604		5 786	4 761	4 473	15 020
Fever cases	251	268	611		299	272		550	540	611	1 701
Women 15–49 years old	405	393	819		125	163		530	556	819	1 905
Women who delivered in previous 12 months or pregnant	144	177	366		114	151		258	328	366	952
Women who delivered in previous 12 months	102	118	246		76	101		178	219	246	643
Children < 5 years old	294	270	486		135	215		429	485	486	1 400b

C, households in control area (no MHO access); MHO, mutual health organization; M, MHO member households; NM, MHO non-member households in areas with MHO access.
^a The non-MHO access control group does not exist for Sikasso because the two MHOs cover the entire urban area.
^b Data on the utilization of diarrhoea treatments, immunizations, vitamin A, and insecticide-treated bednets were available only on a subset of children younger than 5 years (i.e. those whose mothers were pregnant or delivered in the 12 months before the survey).