Table 4. Differences in wealth score between sachet users and non-users stratified by SES quartile.

	Sachet Water		Other Water Source
Characteristic	Freq.	mean (95% CI)	Freq.	mean (95% CI)
Individual characteristics (%, n = 2,814)	190	6.8%	2,624	93.2%
Wealth score ∼		0.11 (−0.02–0.24)		−0.01 (−0.05–0.03)
By SES quartile
Lower class *	78	−0.15 (−0.31–0.02)	707	−0.58 (−0.63– −0.53)
Lower middle class	36	−0.34 (−0.56– −0.11)	605	−0.27 (−0.34– −.021)
Upper middle class	36	0.35 (0.04–0.66)	681	0.16 (0.08–0.23)
Higher class	40	0.79 (0.47–1.11)	631	0.71 (0.62–0.79)

∼ p<0.10;

^* p<0.001.

Note: p-values are from Welch F test of equality of means to account for variance heterogeneity.