Using lot quality assurance sampling to assess access to water, sanitation and hygiene services in a refugee camp setting in South Sudan: a feasibility study

Harding, Elizabeth; Beckworth, Colin; Fesselet, Jean-Francois; Lenglet, Annick; Lako, Richard; Valadez, Joseph J.

doi:10.1186/s12889-017-4656-2

Table 2 Sensitivity analysis of coverage using crude, weighted and the survey design in the calculations

From: Using lot quality assurance sampling to assess access to water, sanitation and hygiene services in a refugee camp setting in South Sudan: a feasibility study

Indicators	Crude Coverage			Weighted Coverage			Crude - Weighted			Coverage with Survey Design			Crude - Survey Design			(Crude - Weighted) - (Crude - Survey Design)
Indicators	Coverage	Standard Error	95% CI	Coverage	Standard Error	95% CI	Coverage Difference	SE Difference	CI Difference	Coverage	Standard Error	95% CI	Coverage Difference	SE Difference	CI Difference	Difference in Difference in Coverage	Difference in Difference in SE	Difference in Difference in CI
Water
Proportion of households using an improved water source	0.973	0.015	0.030	0.973	0.014	0.028	0.000	0.001	0.002	0.973	0.015	0.029	0.000	0.001	0.001	0.000	0.000	0.001
Proportion of households who report that water was continuously available from their habitual water source for the last 2 weeks	0.561	0.047	0.092	0.570	0.044	0.087	-0.009	0.003	0.005	0.570	0.045	0.089	-0.009	0.002	0.003	0.000	0.001	0.002
Proportion of households which own an Ibrik†	0.451	0.047	0.093	0.455	0.041	0.082	-0.004	0.006	0.011	0.455	0.042	0.084	-0.004	0.005	0.009	0.000	0.001	0.002
Hygiene
Proportion of households with at least one piece of soap (observed)	0.487	0.047	0.094	0.506	0.040	0.079	-0.020	0.008	0.015	0.508	0.041	0.080	-0.021	0.007	0.013	0.002	0.001	0.002
Proportion of households with a hand washing area within the living area	0.257	0.041	0.082	0.274	0.027	0.054	-0.017	0.014	0.028	0.274	0.028	0.055	-0.017	0.014	0.027	0.000	0.000	0.001
Proportion of households which have been visited by a health promoter within the last 2 weeks	0.938	0.023	0.045	0.941	0.021	0.041	-0.003	0.002	0.004	0.942	0.021	0.041	-0.004	0.002	0.004	0.000	0.000	0.001
Proportion of heads of households who know four critical moments to practice hand washing with soap	0.345	0.045	0.089	0.370	0.033	0.065	-0.025	0.012	0.024	0.372	0.034	0.067	-0.027	0.011	0.022	0.002	0.001	0.002
Sanitation
Proportion of households who usually use an improved sanitation facility	0.965	0.017	0.035	0.967	0.016	0.032	-0.003	0.001	0.003	0.968	0.016	0.032	-0.003	0.001	0.002	0.001	0.000	0.000
Proportion of households that practice open defecation	0.035	0.017	0.035	0.033	0.016	0.032	0.003	0.001	0.003	0.032	0.016	0.032	0.003	0.001	0.002	-0.001	0.000	0.000
Diarrhoea
Prevalence of diarrhoea among children 0-59 months in the last 2 weeks	0.283	0.043	0.084	0.283	0.042	0.084	0.000	0.000	0.001	0.284	0.043	0.086	-0.001	-0.001	-0.002	0.001	0.001	0.002
Standard Deviation of Difference							0.010	0.005	0.010				0.010	0.005	0.010	0.001	0.000	0.001
Maximum Difference							0.003	0.014	0.028				0.003	0.014	0.027	0.002	0.001	0.002
Average Difference							-0.008	0.005	0.010				-0.008	0.004	0.008	0.000	0.001	0.001
Median Difference							-0.004	0.002	0.005				-0.004	0.002	0.004	0.000	0.001	0.001

^†An ibrik is a water storage container used for washing

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