Review Article
Using Risk Models to Improve Patient Selection for High-Risk Vascular Surgery
Table 2
Multivariate predictors of amputation or graft occlusion 1 year following lower extremity bypass.
| Variable | Hazard ratio | 95% CI | 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 |
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