Table 3.

Adjusted RRs for E. coli contamination at the PoC and the PoU in 23 MICS6 in low- and middle-income countries (improved water sources only).

Variable	PoC $\ge 1$ E. coli CFUs/$100\mathrm{mL}$	PoC $>100$ E. coli CFUs/$100\mathrm{mL}$	PoU $\ge 1$ E. coli CFUs/$100\mathrm{mL}$	PoU $>100$ E. coli CFUs/$100\mathrm{mL}$
Improved	0.74 (0.64, 0.85)	0.43 (0.33, 0.56)	0.96 (0.92, 1.01)	0.74 (0.66, 0.83)
Accessible	0.99 (0.94, 1.05)	1.08 (0.96, 1.21)	0.94 (0.90, 0.99)	0.96 (0.88, 1.06)
Available	0.95 (0.88, 1.02)	0.95 (0.88, 1.02)	0.96 (0.91, 1.01)	0.94 (0.89, 0.99)
Observations	53,224	53,224	54,063	54,063

Note: Data are shown as exponentiated coefficients from modified Poisson regression with random intercepts for each country and 95% confidence intervals. Regression models were based on MICS6 and are unweighted. Adjusted for PoC and PoU wealth quintile, education of household head, sex of household head, rural residence, improved sanitation, cluster improved sanitation $>75\%$, open defecation in cluster, livestock ownership, and season (PoU only) handwashing, water storage, household water treatment, natural flooring. Covariates and country-specific models are included in Excel Tables S5 and S7. CFU, colony forming unit; E. coli, Escherichia coli; MICS6, sixth round of Multiple Indicator Cluster Surveys; PoC, point of collection; PoU, point of use; RR, risk ratio.