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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: Am J Cardiol. 2015 Jan 14;115(7):895–900. doi: 10.1016/j.amjcard.2015.01.014

Table 3.

Adjusted Prevalence Ratio of Low-dose Aspirin Use Among Adults Aged 40 and Over Eligible1 to Take Low-dose Aspirin for Secondary Prevention of Cardiovascular Disease, by Definition of Atherosclerotic Cardiovascular Disease and Demographic and Health Characteristics, United States, 20122

Coronary Heart Disease and/or Stroke n=3,068 Adjusted prevalence ratio (95% CI) Coronary Heart Disease Only n=2,007 Adjusted prevalence ratio (95% CI)
Age (years)
 40–64 0.89 (0.82–0.96) 0.87 (0.80–0.95)
 ≥65 Reference Reference

Sex
 Men Reference Reference
 Women 0.91 (0.85–0.97) 0.90 (0.84–0.98)

Race
 NH-White Reference Reference
 NH-Black 0.91 (0.83–0.99) 0.88 (0.78–0.99)
 Hispanics 0.83 (0.72–0.95) 0.84 (0.72–0.97)
 Others 0.90 (0.78–1.05) 1.05 (0.94–1.18)

Education
 <High school Reference Reference
 High school 0.96 (0.88–1.05) 0.97 (0.88–1.07)
 Some college 0.97 (0.88–1.05) 0.99 (0.90–1.09)
 ≥College 1.08 (0.99–1.18) 1.07 (0.96–1.18)

BMI
 Normal Reference Reference
 Overweight 1.07 (0.99–1.16) 1.11 (1.00–1.23)
 Obesity 1.07 (0.99–1.15) 1.12 (1.01–1.23)

Have Insurance
 Yes Reference Reference
 No 0.92 (0.79–1.07) 0.87 (0.74–1.03)

Ulcer
 Yes Reference Reference
 No 0.97 (0.89–1.04) 0.97 (0.88–1.06)

Arthitis3
 Yes Reference Reference
 No 0.99 (0.92–1.06) 1.00 (0.93–1.08)

Number of risk factors4
0 Reference Reference
1 1.13 (0.96–1.34) 1.09 (0.91–1.31)
2 1.23 (1.05–1.43) 1.19 (1.00–1.41)
3 1.36 (1.15–1.60) 1.26 (1.05–1.53)
4 1.50 (1.28–1.77) 1.42 (1.18–1.71)

Number of risk factor5 odds ratio for linear trend 1.39 (1.23–1.57) 1.33 (1.16–1.54
1

An adult's eligibility to take low-dose aspirin is determined by either having been told by a health professional that s/he have coronary heart disease and/or stroke, or having been told by a health professional that s/he has coronary heart disease.

2

Data source: CDC/NCHS, National Health Interview Survey, 20121. All covariates were in the models simultaneously

3

Arthritis included arthritis, rheumatoid arthritis, gout, lupus, or fibromyalgia

4

Tested for a linear trend in the relationship between cardiovascular risk and aspirin use by substituting the number of risk factors as a continuous variable in the model

5

Tested for a linear trend in the relationship between cardiovascular risk and aspirin use by substituting the number of risk factors as a continuous variable in the model