Table III.
Proportional Hazards analyses relating baseline clinical characteristics to mortality in patients with intermittent claudication.
| Variables | Relative Risk | 95% Confidence Interval | P Value |
|---|---|---|---|
| Age (years) | 1.052 | 1.027 to 1.078 | < 0.001 |
| Body Mass Index (kg)/(meter)2 | 0.936 | 0.897 to 0.977 | 0.002 |
| Ankle/Brachial Index | 0.115 | 0.037 to 0.356 | < 0.001 |
| Male Sex | 1.972 | 0.960 to 4.065 | 0.065 |
| Caucasian Race | 1.117 | 0.764 to 1.633 | 0.569 |
| Myocardial Infarction | 1.592 | 1.010 to 2.513 | 0.045 |
| Current Smoking | 1.418 | 0.973 to 2.066 | 0.069 |
| Diabetes | 1.195 | 0.754 to 1.890 | 0.449 |
| Hypertension | 0.933 | 0.440 to 1.976 | 0.856 |
| Hyperlipidemia | 0.700 | 0.449 to 1.091 | 0.114 |
| COPD | 1.479 | 0.816 to 2.681 | 0.197 |
| Physical Activity Scale (activity score) | 0.677 | 0.542 to 0.847 | 0.001 |
| 6-Minute Walk Distance (meters) | 0.998 | 0.995 to 1.000 | 0.077 |
| WIQ Distance Score (%) | 0.993 | 0.985 to 1.000 | 0.055 |
| WIQ Speed Score (%) | 0.994 | 0.985 to 1.002 | 0.132 |
| WIQ Stair Climbing Score (%) | 0.992 | 0.986 to 0.999 | 0.023 |