Table 3.
Weighted Cox Proportional Hazard Model Examining the Association Between Physical Activity and All‐Cause Mortality Among CAD Patients, 2003–2006 NHANES (N = 256)
| All‐Cause Mortality | ||
|---|---|---|
| Hazard Ratio (95% CI) | P Value | |
| Physical activity, 60 min/d increase | 0.84 (0.72‐0.97) | 0.02 |
| Covariates | ||
| Age, 1 yr increase | 1.05 (1.02‐1.08) | 0.01 |
| Female vs male | 0.72 (0.38‐1.37) | 0.31 |
| Race–ethnicity | ||
| Mexican American vs non‐Hispanic white | 1.58 (0.61‐4.13) | 0.33 |
| Non‐Hispanic black vs non‐Hispanic white | 0.83 (0.32‐2.13) | 0.69 |
| Other vs non‐Hispanic white | 2.56 (0.70‐9.30) | 0.14 |
| Poverty‐to‐income ratio, 1 unit increase | 0.82 (0.63‐1.08) | 0.17 |
| CRP, 1 mg/dL increase | 1.33 (0.93‐1.91) | 0.10 |
| Cotinine, 50 ng/mL increase | 1.11 (0.98‐1.27) | 0.08 |
| Comorbid illness, 1 illness increase | 1.21 (0.96‐1.53) | 0.09 |
| Cholesterol medication, yes vs no | 0.57 (0.58‐1.96) | 0.22 |
| Hypertensive medication, yes vs no | 1.06 (0.58‐1.96) | 0.82 |
Abbreviations: CAD, coronary artery disease; CI, confidence interval; CRP, C‐reactive protein; NHANES, National Health and Nutrition Examination Survey.