[The use of finite population sampling and lot quality assurance sampling in estimating "immunization coverage rate" in villages (towns)].

We have used Finite Population Sampling and Lot Quality Assurance Sampling (LQAS) in a field survey of "immunization coverage rate" for EPI in three villages (towns) in Lanxi Zhejiang Province. The results showed that there was no significant difference (P > 0.05) between the rates of two samplings and between the rate of sampling and population. These results indicated that both Finite population Sampling and LQAS are cheap and simple, and can represent the immunization coverage level of population.