期刊
AMERICAN JOURNAL OF EPIDEMIOLOGY
卷 179, 期 10, 页码 1216-1227出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/aje/kwu029
关键词
age-period-cohort effects; anxiety; Canada; Canadian Community Health Surveys; depression; National Health Interview Surveys; psychological distress; United States
资金
- National Institutes of Health [K01-AA021511]
- Manitoba Health Research Council Chair Award
Although treatment utilization for depression and anxiety symptoms has increased substantially in the United States and elsewhere, it remains unclear whether the underlying population distribution of psychological distress is changing over time. We estimated age, period, and cohort effects using data from 2 countries over more than 20 years, including National Health Interview Surveys from 1997 to 2010 (n = 447,058) and Canadian Community Health Surveys from 2000 to 2007 (n = 125,306). Psychological distress was measured with the Kessler Psychological Distress Scale. By period, both countries showed the highest levels of psychological distress in 2001 and the lowest levels in 2007. By age, psychological distress was highest in adolescence and during the late 40s and early 50s. By cohort, Canadian Community Health Survey results indicated a decreasing cohort effect among those born in 1922-1925 through 1935-1939 (beta = -0.36, 95% confidence interval: -0.45, -0.27) and then a continuously increasing cohort effect during the remainder of the 20th century through 1989-1992 (beta = 0.49, 95% confidence interval: 0.38, 0.61). The National Health Interview Survey data captured earlier-born cohorts and indicated an increased cohort effect for the earliest born (for 1912-1914, beta = 0.44, 95% confidence interval: 0.26, 0.61). In sum, individuals in the oldest and more recently born birth cohorts have higher mean psychological distress symptoms compared with those born in midcentury, underscoring the importance of a broad, population-level lens for conceptualizing mental health.
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