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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