Key result
Type A behavior pattern was significantly associated with an increased risk of nonfatal acute myocardial infarction in male workers (OR 1.9; 95% CI 1.2-2.9) and women (OR 2.8; 95% CI 1.6-4.9).
Why the study?
Does Type A behavior pattern and job strain increase the risk of nonfatal myocardial infarction in Japanese male workers and women?
Population
779 Japanese subjects, comprising 290 cases of nonfatal acute myocardial infarction and 489 controls.
Comparison
Type A behavior pattern and job strain vs Absence of Type A behavior pattern and job strain
Design
Case-control
Authors
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Should not yet guide MI prevention in Japanese adults; extends Type A associations but leaves causality open for prospective confirmation.
Case-Control (n=779)
Does Type A behavior pattern and job strain increase the risk of nonfatal myocardial infarction in Japanese male workers and women?
Odds Ratio: 1.9 (95% CI 1.2–2.9)
Type A behavior pattern and job strain are significant psychosocial risk factors for nonfatal myocardial infarction in Japanese men and women.
Kouichi Yoshimasu (2001) conducted a case-control in Nonfatal acute myocardial infarction (n=779). Type A behavior pattern vs. Absence of Type A behavior pattern was evaluated on Nonfatal acute myocardial infarction (OR 1.9, 95% CI 1.2-2.9). Type A behavior pattern was significantly associated with an increased risk of nonfatal acute myocardial infarction in male workers (OR 1.9; 95% CI 1.2-2.9) and women (OR 2.8; 95% CI 1.6-4.9).
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