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Estimating the Underlying Infant Mortality Rates for Small Populations, Including those Reporting Zero Infant Deaths: A Case Study of Counties in California
Population Review Pub Date : 2019-01-01 , DOI: 10.1353/prv.2019.0005
David A. Swanson , Augustine Kposowa , Jack Baker

Abstract:Infant mortality is an important population health statistic that is often used to make health policy decisions. For a small population, an infant mortality rate is subject to high levels of uncertainty and may not indicate the “underlying” mortality regime affecting the population. This situation leads some agencies to either not report infant mortality for these populations or report infant mortality aggregated over space, time or both. A method is presented for estimating “underlying” infant mortality rates that reflect the intrinsic mortality regimes of small populations. The method is described and illustrated in a case study by estimating IMRs for the 15 counties in California where zero infant deaths are reported at the county level for the period 2009–2011. We know that among these 15 counties there are 50 infant deaths reported at the state level but not for the counties in which they occurred. The method’s validity is tested using a synthetic population in the form of a simulated data set generated from a model life table infant mortality rate, representing Level 23 of the West Family Model Life Table for both sexes. The test indicates that the method is capable of producing estimates that represent underlying rates. In this regard, the method described here may assist in the generation of information about the health status of small populations.

中文翻译:

估计小人口的潜在婴儿死亡率,包括那些报告零婴儿死亡的人:加利福尼亚各县的案例研究

摘要:婴儿死亡率是一项重要的人口健康统计数据,常用于制定卫生政策决策。对于一小部分人口,婴儿死亡率具有高度的不确定性,可能无法表明影响人口的“潜在”死亡率制度。这种情况导致一些机构要么不报告这些人群的婴儿死亡率,要么报告在空间、时间或两者上汇总的婴儿死亡率。提出了一种估算“潜在”婴儿死亡率的方法,该方法反映了小群体的内在死亡率制度。该方法在案例研究中进行了描述和说明,通过估算加利福尼亚州 15 个县的 IMR,在 2009 年至 2011 年期间县级报告的婴儿死亡人数为零。我们知道,在这 15 个县中,州级报告了 50 名婴儿死亡,但不是发生在这些县的。该方法的有效性使用模拟数据集形式的合成人群进行测试,该数据集是从模型生命表婴儿死亡率生成的,代表了西方家庭模型生命表的第 23 级男女。该测试表明该方法能够产生代表潜在利率的估计值。在这方面,这里描述的方法可能有助于生成关于小群体健康状况的信息。代表男性和女性的西方家庭模范生活表的第 23 级。该测试表明该方法能够产生代表潜在利率的估计值。在这方面,这里描述的方法可能有助于生成关于小群体健康状况的信息。代表男性和女性的西方家庭模范生活表的第 23 级。该测试表明该方法能够产生代表潜在利率的估计值。在这方面,这里描述的方法可能有助于生成关于小群体健康状况的信息。
更新日期:2019-01-01
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