Larsen U, Menken J
Department of Sociology, SUNY Stony Brook, NY 11794-4356.
Demography. 1991 May;28(2):229-47.
This paper extends work on measures of population proportions sterile to propose a new estimator of an individual woman's age at sterility and consequently her sterility status at given ages. Accuracy and reliability, examined in a simulation study, appear satisfactory. From World Fertility Survey data for five African countries, the proportions sterile by age estimated by the individual measure and by the population estimator are almost identical. Cameroon and Kenya show substantial variation in prevalence and incidence of sterility across ethnic groups and by number of marriages. Unexpectedly, the evidence suggests that sterility increased from 1960 on in Kenya and remained unchanged in Cameroon.
本文拓展了关于人口不育比例度量的研究工作，提出了一种新的估计方法，用于估算个体女性的不育年龄，进而确定其在特定年龄的不育状态。在一项模拟研究中对该方法的准确性和可靠性进行了检验，结果显示令人满意。根据五个非洲国家的世界生育率调查数据，通过个体度量法和总体估计法估算出的各年龄段不育比例几乎相同。喀麦隆和肯尼亚的不育患病率和发病率在不同种族群体以及不同婚姻次数之间存在显著差异。出乎意料的是，有证据表明肯尼亚的不育率自1960年起有所上升，而喀麦隆则保持不变。
