Iranian Journal of Public Health 1989. 18(1-4):29-38.

CLUSTER SAMPLING FOR DETERMINATION OF IMMUNIZATION COVERAGE: A LIMITATION
K. Nasseri, K. Mohammad, M. Khoshgam

Abstract


Evidence provided from studies in Iran points to a possible bias in application of the standard EPI cluster sampling procedure, When carried out in populations with highly variant birth rates, tends to over-represent the low birth rate, i.e. higher socio-economic, strata, and if the entity under study shows significant socio-economic gradient, then the estimates arrived at by this method might be highly biased. Some alternatives have been mentioned.

Keywords


Rapid epidemiological methods,

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