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Bulletin of the World Health Organization logoLink to Bulletin of the World Health Organization
. 1997;75(5):417–426.

Efficiency of EPI cluster sampling for assessing diarrhoea and dysentery prevalence.

S S Yoon 1, J Katz 1, K Brendel 1, K P West Jr 1
PMCID: PMC2487016  PMID: 9447775

Abstract

This study examines the efficiency of EPI cluster sampling in assessing the prevalence of diarrhoea and dysentery. A computer was used to simulate fieldwork carried out by a survey taker. The bias and variance of prevalence estimates obtained using EPI cluster sampling were compared with those obtained using simple random sampling and cluster (stratified random) sampling. Efficiency ratios, calculated as the mean square error divided by total distance travelled, were used to compare EPI cluster sampling to simple random sampling and standard cluster sampling. EPI cluster sampling may be an appropriate low-cost tool for monitoring trends in the prevalence of diarrhoea and dysentery over time. However, it should be used with caution when estimating the prevalence of diarrhoea at a single point in time because of the bias associated with this cluster sampling method.

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Selected References

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