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Aspirin Use for the Primary Prevention of Myocardial Infarction Among Men in North Carolina, 2013


Of 8,860 respondents to the 2013 North Carolina Behavioral Risk Factor Surveillance System Survey, 5,405 women were excluded. Of the 3,455 men, 1,361 men were excluded because they were younger than 45 or older than 79. Of all men aged 45 to 79 (n = 2,094), 931 men had data on aspirin use (respondents of the CVH module) and were included; 1,163 men were missing data on aspirin use (they were nonrespondents of the cardiovascular health module) and were excluded. Through an imputation process, these 1,163 men were added back into the study sample. Because of a contraindication to aspirin, 163 men were excluded, and because of a history of cardiovascular disease, 367 men were excluded. The final study sample included men aged 45 to 79 with no contraindication to aspirin and no history of cardiovascular disease (n = 1,564).

Figure 1. Selection of study participants, North Carolina, Behavioral Risk Factor Surveillance System, 2013. Abbreviation: CVH, cardiovascular health.

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Figure 2. Weighted prevalence of aspirin use by number of myocardial infarction risk factors among men aged 45 to 79 years in North Carolina, Behavioral Risk Factor Surveillance System, 2013. Risk factors were hypertension, diabetes, smoking, and high cholesterol. Error bars represent 95% confidence intervals.

No. of Risk Factors Weighted Prevalence, % (95% Confidence Interval)
0 31.0 (25.0–37.0)
1 42.1 (36.7–47.6)
2 46.8 (40.8–52.8)
3 or 4 47.4 (37.8–56.9)

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Page last reviewed: November 19, 2015