摘要
目的探索既往有偿献血员基数的估计方法,对安徽省4个县既往有偿献血人员基数进行估计.方法采用枚举法,根据不同行政村中人群既往献血员分布的密集程度分层抽样调查;用各层人口数分别乘以该层人群中献血员百分比及其95%可信区间,计算、汇总,获取目标人群基数.结果4个县21.8%(93/1 891)的行政村有既往有偿献血员,且呈集中分布;估计既往献血员基数为13 086人(11820人～14 351人);调查前后样本村分层一致率为72%.结论枚举法适合于对既往有偿献血人群基数的估计,但要根据知情人提供信息的真实度调整估计结果,则会更为全面、真实地估计当地既往有偿献血员基数.
Objectives To explore the method of estimating the population size of paid blood donores（PBD） in four counties of Anhui province. Methods An enumeration method was applied by stratifying samples on the percentage of PBDs among the whole population in different villages. Estimated number of PBD was obtained by calculating the percentage of PBDs among the whole population（its 95 % CL） and population of every stratum. Results PBDs are concentrated in 21.8% of the 1891 villages in four counties. The size of PBDs is 13 711 ,which ranges from 12 385 to 15 037.The vast of PBDs are concentrated in the 1%-5 % of PBDs among the whole population, accounting for half of whole PBDs. The consistency rate of sample-villages is 72% before and after field check. Conclusion Enumeration method is applicable in estimating the population size of PBDs, but existing data sholud be collected as completely as possible to establish a good sampling framework, which will make the sample representative.
出处
《中国艾滋病性病》
CAS
2005年第4期266-267,261,共3页
Chinese Journal of Aids & STD
关键词
既往有偿献血员
基数估计
枚举法
Paid blood donors
Estimation of baseline number
Enumeration method
