Miniño Arialdi M
Centers for Disease Control and Prevention National Center for Health Statistics 3311 Toledo Road, Hyattsville, Maryland 20782, USA.
NCHS Data Brief. 2011 Jul(64):1-8.
Mortality in the United States is best summarized by the age-adjusted death rate--a measure that accounts for changes in the age distribution of the population. This rate has declined in an almost uninterrupted manner since 1960. The death rate is now 45 percent lower than in 1960 (declining from 1,339.2 per 100,000 standard population in 1960 to 741.0 in 2009). Although age-adjusted mortality has declined for all demographic groups over a period of many decades, long-standing gaps between black and white populations and between male and female populations have begun to narrow only since the mid-1990s. Many of the recent improvements in death rates and life expectancy for all population groups can be attributed to ongoing reductions in death rates from major causes of death, such as heart disease, cancer, stroke, and chronic lower respiratory diseases. The figures presented in this report are based on preliminary mortality data for 2009.
美国的死亡率最好用年龄调整死亡率来概括,这一指标考虑了人口年龄分布的变化。自1960年以来,该比率几乎持续下降。目前的死亡率比1960年低45%(从1960年每10万标准人口中的1339.2人降至2009年的741.0人)。尽管经过几十年,所有人口群体的年龄调整死亡率都有所下降,但黑人和白人以及男性和女性人口之间长期存在的差距直到20世纪90年代中期才开始缩小。所有人口群体近期死亡率和预期寿命的许多改善都可归因于主要死因(如心脏病、癌症、中风和慢性下呼吸道疾病)死亡率的持续下降。本报告中的数据基于2009年的初步死亡率数据。