Table 4. The log improvement of water quality (TTC/100 ml) between household and source water modeled against adopters status and Pureit use, for each socio-economic tercile.

	Pureit adopters vs. non adopters			Pureit use vs. non use
Variable	β	CI	p value	β	CI	p value
Model 1: unadjusted	0.49	0.6; 0.92	0.03	0.28	0.25; 0.82	0.29
Model 2: SES
Poorest 40%	−0.11	−0.62; 0.40	0.66	0.11	−0.40; 0.61	0.64
Middle 40%	0.56	0.004; 1.12	0.05	0.62	−0.04; 1.27	0.06
Least poor 20%	0.49	−.13; 1.11	0.12	0.41	−0.26; 1.08	0.22

β are log improvements in water quality between the source and household point-of-use calculated using linear regression of log-transformed values.