Skip to main content

Table 3 Predictors of primary patency loss by Cox proportional hazards regression models

From: Endovascular recanalization of chronic total occlusions of the native superficial femoral artery after failed femoropopliteal bypass in patients with critical limb ischemia

Variable UnivariateHR (95 % CI) – P value MultivariateHR (95 % CI) – P value
Age 1.2 (0.9–1.3) – 0.59 1.3 (0.8–2.2) – 0.71
Age ≥ 70 years 1.4 (1.0-1.5) – 0.53 1.5 (0.6–9.7) – 0.65
Sex (Male) 0.9 (0.7–1.3) – 0.81 2.1 (0.5–13.4) – 0.88
BMI 1.1 (0.9–1.5) – 0.79 1.2 (0.7–1.9) – 0.81
Diabetes mellitus 4.2 (2.1–9.1) – 0.03 6.1 (1.1–23.8) – 0.04
Coronary artery disease 1.2 (0.8–1.3) – 0.61 1.3 (0.4–13.3) – 0.69
Congestive heart failure 1.6 (1.1–2.1) – 0.39 1.9 (0.3–15.5) – 0.55
Cerebrovascular disease 1.6 (1.1–1.9) – 0.43 1.7 (0.5–19.9) – 0.59
Smoking history 1.2 (0.8–1.9) – 0.55 1.3 (0.3–15.3) – 0.71
Current smoker 1.5 (1.1-2.0) – 0.45 1.6 (0.6–13.9) – 0.61
Hypertension 1.9 (1.3–3.7) – 0.31 2.1 (0.3-21-1) – 0.37
Hyperlipidaemia 1.6 (1.0-1.8) – 0.44 1.7 (0.5–17.4) – 0.63
Chronic renal insufficiency(eGFR < 90 mL/min) 3.9 (1.7–8.8) – 0.04 4.6 (0.7–18.2) – 0.04
Rutherford categories at presentation
 1 or 2 or 3 - claudication 0.9 (0.7–1.3) – 0.80 1.8 (0.6–13.0) – 0.83
 4 – rest pain 1.2 (0.8–1.3) – 0.62 2.1 (0.5–13.8) – 0.71
 5 or 6 – tissue loss 4.1 (1.9–8.7) – 0.04 2.4 (0.7–10.8) – 0.46
Bypass graft target(Below-knee popliteal artery) 4.3 (2.2–9.3) – 0.03 4.1 (1.2–19.2) – 0.04
Lesion length ≥ 30 cm 4.5 (2.9–9.7) – 0.02 4.6 (0.9–14.2) – 0.04
TASCII D Lesion 4.2 (2.1–8.9) – 0.03 5.7 (1.2–19.8) – 0.04
BTK runoff (1 vessel) 5.5 (3.1–11.1) – 0.01 6.8 (1.1–23.9) – 0.02
Stents positioned per patient ≥ 3 3.9 (1.2–14.9) – 0.04 1.5 (0.6–11.0) – 0.48