Research Article

Kidney Retransplantation after Graft Failure: Variables Influencing Long-Term Survival

Table 3

Risk factors for graft loss in first and second transplantation.

HR95% CI value

Number of transplantations
 1Ref
 21.51.1–2.00.003
 ≥33.31.7–6.1<0.001

Recipient age (years)
 <50Ref
 50–591.20.9–1.60.1
 60–691.91.4–2.5<0.001
 ≥702.91.8–4.8<0.001

Time on dialysis (years)
 <1Ref
 1-21.20.9–1.50.2
 2–41.41.1–1.80.003
 >41.71.3–2.2<0.001

Charlson–Deyo index
 2 (kidney disease only)Ref
 3 (≤1 mild comorbidity)1.20.9–1.60.1
 4 (≥2 mild or 1 moderate comorbidity)1.81.4–2.4<0.001
 ≥5 (multiple comorbidities)2.31.7–3.0<0.001

Smoking1.31.1–1.50.01

Comorbidities
 Myocardial infarction1.31.0–1.70.04
 Congestive heart failure3.12.1–4.5<0.001
 PAD1.41.0–1.80.03
 Diabetes with end organ failure1.21.0–1.30.02
 Moderate – severe liver disease1.31.0–1.60.04

Note. HR, hazard ratio; CI, confidence interval; PAD, peripheral artery disease. Charlson–Deyo index was analyzed for scoring points and in a second model using the same confounders for underlying comorbidities to avoid interactions.