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July 18, 2011Canadian Medical Association Journal45 citationsOpen Access

Effect of marriage on duration of chest pain associated with acute myocardial infarction before seeking care

CAClare AtzemaPAPeter C. AustinTHTruc T. Huynh

Key Result

Being married was associated with significantly lower odds of delayed presentation to the hospital (more than six hours) for acute myocardial infarction compared to being single (OR 0.46).

Key Points

  • To assess whether marital status affects the duration of chest pain before seeking care in acute myocardial infarction patients, and to explore any sex differences.
  • Retrospective cohort analysis of 4,403 acute myocardial infarction patients in Ontario, Canada, from April 2004 to March 2005.
  • Multivariable regression analyses used to evaluate the relationship of marital status with delayed hospital presentation, stratified by sex.
  • Excluded patients without chest pain.
  • 75.3% of married patients presented within six hours compared to 67.9% of singles, 68.5% of divorced, and 70.8% of widowed patients.
  • Marital status linked to lower odds of delayed presentation (OR 0.46, 95% CI 0.30-0.71, p < 0.001) compared to single patients.
  • Among men, the odds ratio was even lower at 0.35 (95% CI 0.21-0.59, p < 0.001), while for women, it was not significant (OR 1.36, 95% CI 0.49-3.73, p = 0.55).

Study Design

Type

Cohort (n=4,403)

Multicenter

Yes

Structured PICO

Does being married reduce delayed presentation to the hospital in patients experiencing acute myocardial infarction with chest pain?

P
Population
4,403 adults aged 20 to 105 years with acute myocardial infarction and chest pain, admitted to 96 acute care hospitals in Ontario, Canada.
E
Exposure
Married or common law marital status
C
Comparator
Single marital status
O
Outcome
Delayed presentation to hospital (more than six hours from onset of chest pain)

Being married is associated with significantly earlier hospital presentation for acute myocardial infarction in men, but not in women, potentially contributing to the known cardiovascular mortality benefits of marriage in men.

Main Result

Odds Ratio: 0.46 (95% CI 0.3–0.71)

p-value: p=<0.001

Limitations

  • Missing data due to retrospective data collection
  • Marital status was not validated through an external source
  • The sickest patients (e.g., decreased level of consciousness and unaccompanied) were probably excluded
  • Did not collect information on educational status
  • Did not account for distance from the patient's dwelling to the hospital
  • Insufficient power to fit the quantile regression model separately by sex due to smaller sample size for exact time of onset

Abstract

BACKGROUND: Coronary artery disease is the most common cause of death in the Western world, and being married decreases the risk of death from cardiovascular causes. We aimed to determine whether marital status was a predictor of the duration of chest pain endured by patients with acute myocardial infarction before they sought care and whether the patient's sex modified the effect. METHODS: We conducted a retrospective, population-based cohort analysis of patients with acute myocardial infarction admitted to 96 acute care hospitals in Ontario, Canada, from April 2004 to March 2005. We excluded patients who did not experience chest pain. Using multivariable regression analyses, we assessed marital status in relation to delayed presentation to hospital (more than six hours from onset of pain), both overall and stratified by sex. In patients who reported the exact duration of chest pain, we assessed the effect of marital status on the delay in seeking care. RESULTS: Among 4403 eligible patients with acute myocardial infarction, the mean age was 67.3 (standard deviation 13.6) years, and 1486 (33.7%) were women. Almost half (2037 or 46.3%) presented to a hospital within two hours, and 3240 (73.6%) presented within six hours. Overall, 75.3% (2317/3079) of married patients, 67.9% (188/277) of single patients, 68.5% (189/276) of divorced patients and 70.8% (546/771) of widowed patients presented within six hours of the onset of chest pain. Being married was associated with lower odds of delayed presentation (odds ratio OR 0.46, 95% confidence interval CI 0.30-0.71, p < 0.001) relative to being single. Among men, the OR was 0.35 (95% CI 0.21-0.59, p < 0.001), whereas among women the effect of marital status was not significant (OR 1.36, 95% CI 0.49-3.73, p = 0.55). INTERPRETATION: Among men experiencing acute myocardial infarction with chest pain, being married was associated with significantly earlier presentation for care, a benefit that was not observed for married women. Earlier presentation for medical care appears to be one reason for the observed lower risk of cardiovascular death among married men, relative to their single counterparts.

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Cite This Study

Atzema et al. (2011) conducted a cohort in Acute myocardial infarction with chest pain (n=4,403). Marital status (married or common-law) vs. Single status was evaluated on Delayed presentation to hospital (more than six hours from onset of chest pain) (OR 0.46, 95% CI 0.30-0.71, p=<0.001). Being married was associated with significantly lower odds of delayed presentation to the hospital (more than six hours) for acute myocardial infarction compared to being single (OR 0.46).

synapsesocial.com/papers/6a230f7bcd0d654270d28a8ehttps://doi.org/10.1503/cmaj.110170
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