BACKGROUND: We have recently reported on the association between clinical depression and out-of-hospital sudden cardiac arrest (SCA). In this study, we extend our research on the contribution of psychosocial characteristics to SCA, by examining the association between marital status and out-of-hospital SCA. DESIGN: A large case-control study of risk factors for incident SCA including 2,119 cases and 4,042-matched controls. METHODS: Participants were enrollees of a health maintenance organization (USA). Cases experienced SCA between 1980 and 1994 (mean age of 67 years). Controls were a stratified random sample of enrollees, with the strata defined by age, sex, earlier heart disease, and calendar year. The marital status at the time of the SCA or a comparable index date for controls was assessed using ambulatory care medical records. Conditional logistic regression was used to estimate odds ratio and its 95% confidence interval. RESULTS: Cases were more likely to be unmarried than the controls (30.2% vs. 21.0%), defined as being separated or divorced (10.0% vs. 7.0%), single (5.0% vs. 3.6%) or widowed (15.2% vs. 10.4%). Unmarried participants had a higher risk of SCA (odds ratio: 1.53; 95% confidence interval: 1.33-1.76), after adjustment for SCA risk factors. Consistent findings were observed according to sex, older age (>70 years), earlier coronary heart disease and the presence of clinical depression. Those who were both unmarried and clinically depressed had the highest risk of SCA. CONCLUSION: These data support an association between marital status and SCA.
BACKGROUND: We have recently reported on the association between clinical depression and out-of-hospital sudden cardiac arrest (SCA). In this study, we extend our research on the contribution of psychosocial characteristics to SCA, by examining the association between marital status and out-of-hospital SCA. DESIGN: A large case-control study of risk factors for incident SCA including 2,119 cases and 4,042-matched controls. METHODS:Participants were enrollees of a health maintenance organization (USA). Cases experienced SCA between 1980 and 1994 (mean age of 67 years). Controls were a stratified random sample of enrollees, with the strata defined by age, sex, earlier heart disease, and calendar year. The marital status at the time of the SCA or a comparable index date for controls was assessed using ambulatory care medical records. Conditional logistic regression was used to estimate odds ratio and its 95% confidence interval. RESULTS: Cases were more likely to be unmarried than the controls (30.2% vs. 21.0%), defined as being separated or divorced (10.0% vs. 7.0%), single (5.0% vs. 3.6%) or widowed (15.2% vs. 10.4%). Unmarried participants had a higher risk of SCA (odds ratio: 1.53; 95% confidence interval: 1.33-1.76), after adjustment for SCA risk factors. Consistent findings were observed according to sex, older age (>70 years), earlier coronary heart disease and the presence of clinical depression. Those who were both unmarried and clinically depressed had the highest risk of SCA. CONCLUSION: These data support an association between marital status and SCA.
Authors: April F Wicks; Thomas Lumley; Rozenn N Lemaitre; Nona Sotoodehnia; Thomas D Rea; Barbara McKnight; David S Strogatz; Viktor E Bovbjerg; David S Siscovick Journal: Epidemiology Date: 2012-05 Impact factor: 4.822
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