Table 1.

Proportion of women who completed each of the five steps in the Tanzanian National Voucher Scheme for delivery of insecticide-treated mosquito nets to pregnant women, by socio-economic status

Step	Socio-economic status, quintile; % of women*						p value	Equity ratio: Q1:Q5
	Q1	Q2	Q3	Q4	Q5	All
	n = 232	n = 326	n = 260	n = 273	n = 229	n = 1320
Women who had live birth in 12 months before survey†§	232	326	260	273	229	1320
1. Attended antenatal clinic§	94	98	99	99	99	98	< 0.01	0.95
2. Received voucher§	67	73	72	72	78	73	0.16	0.86
3. Redeemed voucher§	64	71	71	76	79	73	< 0.01	0.81
4. Ensure mosquito net is packaged with insecticide§	89	94	97	99	93	95	0.25	0.96
No. all nets bought using voucher**	176	323	365	362	280	1506
5. Effective treatment of voucher nets**	49	57	59	64	66	60	< 0.01	0.74
Cumulative success of the process	18	27	29	34	37	30		0.48
No. all currently pregnant women††	138	172	147	137	113	707
Insecticide-treated net use by currently pregnant women††, % (95% CI)	6.9 (3.6–12.6)	15.8 (11.0–22.3)	29.8 (21.8–39.4)	24.1 (16.4–34.0)	47.9 (37.5–58.5)	23.2 (19.5–27.4)	< 0.01	0.14

^*Unless stated otherwise.

^†The denominator for steps 1–4 is restricted to the numerator of each previous step.

^§Estimates taken from household survey interviews with women who had a live birth in the 12 months prior to survey.

^**Estimates taken from household heads report of net treatment status for all nets purchased using a net voucher.

^††Estimates taken from household survey interviews with currently pregnant women reporting insecticide treated net use previous night.