Population
756 male employees (737 white, 19 nonwhite) aged 50-59 years from an urban Chicago utility corporation.
Design
Cohort
Follow-up
4 years (1954-1957)
Authors
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May inform historical context for silent MI; leaves open applicability to contemporary populations with evolving risk profiles.
This historical study aimed to estimate the incidence of totally asymptomatic myocardial infarction in a cohort of middle-aged male employees.
Howard A. Lindberg (1960) studied this question.
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