• Isaac Sasson and Mark D Hayward.
• Department of Sociology and Anthropology and the Herczeg Institute on Aging, Tel Aviv University, Tel Aviv, Israel.
• JAMA. 2019 Aug 27; 322 (8): 756763756-763.

ImportanceThere are substantial and increasing educational differences in US adult life expectancy. To reduce social inequalities in mortality, it is important to understand how specific causes of death have contributed to increasing educational differences in adult life expectancy in recent years.ObjectiveTo estimate the relationship of specific causes of death with increasing educational differences in adult life expectancy from 2010 to 2017.Design, Setting, And ParticipantsSerial cross-sectional study of 4 690 729 deaths recorded in the US National Vital Statistics System in 2010 and 2017.ExposuresSex, race/ethnicity, and educational attainment.Main Outcomes And MeasuresLife expectancy at age 25 years and years of life lost between ages 25 and 84 years by cause of death.ResultsThe analysis included a total of 2 211 633 deaths in 2010 and 2 479 096 deaths in 2017. Between 2010 and 2017, life expectancy at age 25 significantly declined among white and black non-Hispanic US residents from an expected age at death of 79.34 to 79.15 years (difference, -0.18 [95% CI, -0.23 to -0.14]). Greater decreases were observed among persons with a high school degree or less (white men: -1.05 years [95% CI, -1.15 to -0.94], white women: -1.14 years [95% CI, -1.24 to -1.04], and black men: -0.30 years [95% CI, -0.56 to -0.04]). White adults with some college education but no 4-year college degree experienced similar declines in life expectancy (men: -0.89 years [95% CI, -1.07 to -0.73], women: -0.59 years [95% CI, -0.77 to -0.42]). In contrast, life expectancy at age 25 significantly increased among the college-educated (white men: 0.58 years [95% CI, 0.42 to 0.73], white women: 0.78 years [95% CI, 0.57 to 1.00], and black women: 1.70 years [95% CI, 0.91 to 2.53]). The difference between high- and low-education groups increased from 2010 to 2017, largely because life-years lost to drug use increased among those with a high school degree or less (white men: 0.93 years [95% CI, 0.90 to 0.96], white women: 0.50 years [95% CI, 0.47 to 0.52], black men: 0.75 years [95% CI, 0.71 to 0.79], and black women: 0.28 years [95% CI, 0.25 to 0.31]).Conclusions And RelevanceIn this serial cross-sectional study, estimated life expectancy at age 25 years declined overall between 2010 and 2017; however, it declined among persons without a 4-year college degree and increased among college-educated persons. Much of the increasing educational differences in years of life lost may be related to deaths attributed to drug use.

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