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Association Between Low IQ Scores and Early Mortality in Men and Women: Evidence From a Population-Based Cohort Study.


ABSTRACT: Lower (versus higher) IQ scores have been shown to increase the risk of early mortality, however, the underlying mechanisms are poorly understood and previous studies underrepresent individuals with intellectual disability (ID) and women. This study followed one third of all senior-year students (approximately aged 17) attending public high school in Wisconsin, U.S. in 1957 (n ?=? 10,317) until 2011. Men and women with the lowest IQ test scores (i.e., IQ scores ? 85) had increased rates of mortality compared to people with the highest IQ test scores, particularly for cardiovascular disease. Importantly, when educational attainment was held constant, people with lower IQ test scores did not have higher mortality by age 70 than people with higher IQ test scores. Individuals with lower IQ test scores likely experience multiple disadvantages throughout life that contribute to increased risk of early mortality.

SUBMITTER: Maenner MJ 

PROVIDER: S-EPMC4795820 | biostudies-other | 2015 May

REPOSITORIES: biostudies-other

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Association Between Low IQ Scores and Early Mortality in Men and Women: Evidence From a Population-Based Cohort Study.

Maenner Matthew J MJ   Greenberg Jan S JS   Mailick Marsha R MR  

American journal on intellectual and developmental disabilities 20150501 3


Lower (versus higher) IQ scores have been shown to increase the risk of early mortality, however, the underlying mechanisms are poorly understood and previous studies underrepresent individuals with intellectual disability (ID) and women. This study followed one third of all senior-year students (approximately aged 17) attending public high school in Wisconsin, U.S. in 1957 (n  =  10,317) until 2011. Men and women with the lowest IQ test scores (i.e., IQ scores ≤ 85) had increased rates of morta  ...[more]

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2020-01-08 | GSE140344 | GEO