Table 2.
Multivariate predictors of amputation or graft occlusion 1 year following lower extremity bypass.
| Variable | Hazard ratio | 95% CI | P value |
|---|---|---|---|
| Age | |||
| <40 | 1.4 | 0.4–4.7 | 0.645 |
| 40–49 | 1.9 | 1.2–3.1 | 0.007 |
| 50–59 | 1.2 | 0.8–1.7 | 0.424 |
| 60–69 | 1.2 | 0.8–1.7 | 0.334 |
| 70+ | 1 | 0.7–1.5 | 0.757 |
| Nonambulatory preoperatively | 1.6 | 1–2.5 | 0.044 |
| Dialysis | 1.6 | 1.1–2.2 | 0.008 |
| Diabetes | 1.6 | 1.1–2.5 | 0.029 |
| Critical limb ischemia | 1.7 | 1.3–2.3 | 0.0001 |
| Two vein segments | 2 | 1.4–2.8 | 0.0001 |
| Tarsal target for bypass | 2.5 | 1.2–5.3 | 0.021 |
| Nursing home residence | 2.8 | 1.3–6 | 0.011 |