Table 2. Multivariable Models Predicting Prophylactic Aspirin Use.
| DF (16885 cases) |
DF+SES (14858 cases) |
DF+SES+CD+RF (14007 cases) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OR | 95% CI | P value | OR | 95% CI | P value | OR | 95% CI | P value | ||||
| Region | ||||||||||||
| Other regions vs Stroke Belt | 0.94 | 0.88 | 1.00 | 0.0536 | 0.90 | 0.84 | 0.97 | 0.0054 | 0.93 | 0.86 | 1.00 | 0.0476 |
| Race | ||||||||||||
| Black vs White | 0.75 | 0.70 | 0.80 | <.0001 | 0.82 | 0.76 | 0.88 | <.0001 | 0.71 | 0.65 | 0.77 | <.0001 |
| Gender | ||||||||||||
| Female vs Male | 0.67 | 0.63 | 0.72 | <.0001 | 0.71 | 0.66 | 0.77 | <.0001 | 0.75 | 0.69 | 0.81 | <.0001 |
| Age group | ||||||||||||
| 55-64 vs 45-54 | 1.96 | 1.72 | 2.23 | 0.1732 | 2.01 | 1.75 | 2.31 | 0.0128 | 1.81 | 1.57 | 2.09 | 0.0098 |
| 65-74 vs 45-54 | 2.74 | 2.40 | 3.13 | <.0001 | 2.97 | 2.58 | 3.43 | <.0001 | 2.53 | 2.18 | 2.94 | <.0001 |
| 75-84 vs 45-54 | 2.78 | 2.40 | 3.22 | <.0001 | 3.11 | 2.64 | 3.66 | <.0001 | 2.63 | 2.21 | 3.12 | <.0001 |
| 85+ vs 45-54 | 2.50 | 1.88 | 3.33 | 0.0729 | 2.95 | 2.15 | 4.05 | 0.0186 | 2.85 | 2.04 | 3.99 | 0.0069 |
| Income | ||||||||||||
| $20K-$34K vs <$20K | 1.02 | 0.91 | 1.14 | 0.0004 | 1.04 | 0.93 | 1.17 | 0.0005 | ||||
| $35K-74K vs <$20K | 1.15 | 1.03 | 1.29 | 0.7166 | 1.18 | 1.05 | 1.34 | 0.8087 | ||||
| $75+ vs <$20K | 1.44 | 1.26 | 1.66 | <.0001 | 1.53 | 1.32 | 1.78 | <.0001 | ||||
| Years of education | ||||||||||||
| high school vs < high school | 1.01 | 0.88 | 1.15 | 0.5552 | 1.02 | 0.88 | 1.17 | 0.2592 | ||||
| Some College vs <high school | 0.99 | 0.86 | 1.13 | 0.2337 | 1.04 | 0.90 | 1.20 | 0.6220 | ||||
| College+ vs< high school | 1.11 | 0.97 | 1.28 | 0.0111 | 1.19 | 1.02 | 1.37 | 0.0011 | ||||
| Perceived health | ||||||||||||
| Fair vs Excellent | 1.10 | 0.95 | 1.27 | 0.4037 | ||||||||
| Good vs Excellent | 1.06 | 0.95 | 1.19 | 0.8014 | ||||||||
| Poor vs Excellent | 1.09 | 0.83 | 1.44 | 0.7126 | ||||||||
| Very good vs Excellent | 1.00 | 0.90 | 1.12 | 0.2661 | ||||||||
| Hypertension | ||||||||||||
| Yes vs No | 1.72 | 1.59 | 1.86 | <.0001 | ||||||||
| Diabetes | ||||||||||||
| Yes vs No | 1.52 | 1.38 | 1.67 | <.0001 | ||||||||
| Dislipidemia | ||||||||||||
| Yes vs No | 1.49 | 1.38 | 1.61 | <.0001 | ||||||||
| Smoke status | ||||||||||||
| Past vs Never | 1.08 | 1.00 | 1.18 | 0.0003 | ||||||||
| Current vs Never | 0.86 | 0.77 | 0.98 | 0.0014 | ||||||||
| Alcohol use | ||||||||||||
| Past vs Never | 0.98 | 0.87 | 1.11 | 0.1329 | ||||||||
| Current vs Never | 1.13 | 1.03 | 1.25 | 0.0011 | ||||||||
DF= demographic factors; SES = socioeconomic status; CD = cardiac disease, RF = risk factor
These cross-sectional associations are described in a national cohort (with oversampling of the southeastern “stroke belt”) of African American and white participants evaluated between January 2003 and August 2006.