Arias Elizabeth
Natl Vital Stat Rep. 2012 Sep 24;61(3):1-63.
This report presents complete period life tables for the United States by race, Hispanic origin, and sex, based on age-specific death rates in 2008.
Data used to prepare the 2008 life tables are 2008 final mortality statistics; July 1, 2008, population estimates based on the 2000 decennial census; and 2008 Medicare data for persons aged 66-99. The methodology used to estimate the 2008 life tables has been revised from that used for data years 2000-2007. The methodology was refined in two important ways. First, a logistic model rather than a nonlinear least squares model was used to smooth and extrapolate the vital statistics and Medicare blended death rates at the oldest ages. Second, the age at which smoothing is begun was raised from 66 to 85 or so, depending on the population. This modification applies to the life tables for the total population and for the white, black, non-Hispanic white, and non-Hispanic black populations. The methodology used to estimate the life tables for the Hispanic population remains unchanged from that developed for the publication of life tables by Hispanic origin for data year 2006.
In 2008, the overall expectation of life at birth was 78.1 years. Between 2007 and 2008, life expectancy at birth increased for all groups considered, although approximately 0.1 years of the increase is due to the change in methodology. Life expectancy increased for both males (from 75.4 to 75.6) and females (80.4 to 80.6) and for the white population (78.4 to 78.5), the black population (73.6 to 74.0), the Hispanic population (80.9 to 81.0), the non-Hispanic white population (78.2 to 78.4), and the non-Hispanic black population (73.2 to 73.7).
本报告根据2008年的年龄别死亡率,按种族、西班牙裔血统和性别列出了美国完整的时期生命表。
用于编制2008年生命表的数据包括2008年最终死亡率统计数据;基于2000年十年一次人口普查的2008年7月1日人口估计数;以及66 - 99岁人群的2008年医疗保险数据。用于估计2008年生命表的方法与2000 - 2007年数据年份所使用的方法有所不同。该方法在两个重要方面得到了改进。首先,使用逻辑模型而非非线性最小二乘法模型来平滑和外推最高年龄组的生命统计数据和医疗保险混合死亡率。其次,开始平滑处理的年龄从66岁提高到了85岁左右,具体取决于人口情况。此修改适用于总人口以及白人、黑人、非西班牙裔白人、非西班牙裔黑人人口的生命表。用于估计西班牙裔人口生命表的方法与2006年数据年份按西班牙裔血统编制生命表时所采用的方法保持不变。
2008年,出生时的总体预期寿命为78.1岁。在2007年至2008年期间,所有考虑的群体出生时的预期寿命均有所增加,不过大约0.1岁的增长归因于方法的变化。男性(从75.4岁增至75.6岁)、女性(从80.4岁增至80.6岁)、白人人口(从78.4岁增至78.5岁)、黑人人口(从73.6岁增至74.0岁)、西班牙裔人口(从80.9岁增至81.0岁)、非西班牙裔白人人口(从78.2岁增至78.4岁)以及非西班牙裔黑人人口(从73.2岁增至73.7岁)的预期寿命均有所增加。