Table 4. Baseline characteristics of PAD subjects according to number of secondary prevention treatments.
| Characteristic | No treatment* (n=244) | One treatment (n=129) | Multiple treatments (n=77) |
|---|---|---|---|
| Age, years (mean) | 63.7 (1.0) | 69.8 (1.6) | 70.4 (1.8) |
| Gender (% male) | 32.2 (3.8) | 33.8 (5.5) | 45.2 (6.6) |
| Race (% Non-Hispanic white) | 70.7 (3.6) | 83.6 (2.4) | 87.9 (3.8) |
| Diabetes (%) | 15.0 (2.1) | 21.7 (4.3) | 22.1 (5.6) |
| Hypertension (%) | 59.0 (4.4) | 76.8 (5.8) | 89.7 (3.9) |
| Hyperlipidemia (%) | 43.1 (3.7) | 61.1 (5.9) | 72.4 (6.3) |
| Smoking (% current or former) | 59.2 (5.0) | 62.8 (6.6) | 68.4 (6.3) |
| Chronic kidney disease (%) | 19.8 (2.9) | 32.2 (4.6) | 45.3 (7.6) |
| Systolic blood pressure, mmHg (mean) | 138.2 (1.4) | 142.3 (3.7) | 137.1 (2.3) |
| Body mass index, kg/m2 (mean) | 28.0 (0.6) | 28.9 (0.6) | 29.8 (1.3) |
| Ankle-brachial index (mean) | 0.80 (0.01) | 0.76 (0.01) | 0.74 (0.02) |
| High school education (%) | 69.6 (3.5) | 70.1 (4.8) | 63.8 (6.6) |
| Socioeconomic status (based on PIR) | |||
| Income below poverty level (%) | 21.1 (4.0) | 11.4 (2.3) | 5.3 (1.8) |
| Income 1-2 times poverty level (%) | 29.2 (3.3) | 27.9 (5.1) | 26.9 (6.7) |
| Income 2-3 times poverty level (%) | 17.4 (4.7) | 28.2 (5.7) | 23.4 (5.9) |
| Income 3-4 times poverty level (%) | 12.4 (3.1) | 8.2 (3.5) | 8.3 (4.3) |
| Income >5 times poverty level (%) | 19.9 (5.2) | 24.2 (4.9) | 36.1 (7.9) |
| Low socioeconomic status (Income < 2 times poverty level) (%) | 50.3 (4.8) | 39.4 (5.4) | 32.2 (6.9) |
| Uninsured (%) | 13.9 (2.9) | 2.6 (1.5) | 0.8 (0.8) |
*
includes anti-platelet therapy, statin use, and/or ACE inhibitor or ARB;
PIR = poverty-income ratio