Table 2. Univariate and multivariate analyses of clinicopathological factors that correlate with disease-free survival of ccRCC patients.
| Clinical variable | Univariate analysis | Multivariate analysisc | ||||
| HRa | 95% CIb | P-value | HR | 95% CI | P-value | |
| Disease Free survival (n=428) | ||||||
| Age (years) | 1.377 | 0.967-1.963 | 0.076 | |||
| ≤60 (n = 218) | ||||||
| >60 (n = 210) | ||||||
| Gender | 1.389 | 0.939-2.056 | 0.100 | |||
| Male (n = 283) | ||||||
| Female (n = 145) | ||||||
| T stage | 4.629 | 3.207-6.681 | <0.001 | |||
| T1 or T2 (n = 286) | ||||||
| T3 or T4 (n = 142) | ||||||
| N stage | 5.679 | 2.85-11.318 | <0.001 | 3.427 | 1.658-7.080 | 0.001 |
| N0 or NX (n = 415) | ||||||
| N1 (n = 13) | ||||||
| M stage | 8.691 | 6.00-12.589 | <0.001 | 3.940 | 2.589-5.996 | <0.001 |
| M0 or MX (n = 375) | ||||||
| M1 (n = 53) | ||||||
| G grade | 3.481 | 2.306-5.253 | <0.001 | 2.395 | 1.565-3.666 | <0.001 |
| G1 or G2 (n = 212) | ||||||
| G3 or G4 (n = 216) | ||||||
| Stage | 6.671 | 4.474-9.946 | <0.001 | 3.003 | 1.880-4.799 | <0.001 |
| I or II (n=273) | ||||||
| III or IV (n=155) | ||||||
| DAPK1 | 0.524 | 0.386-0.711 | <0.001 | 0.615 | 0.422-0.896 | 0.011 |
| Low(n = 214) | ||||||
| High (n = 214) | ||||||
a HR estimated from Cox proportional hazard regression model; b CI of the estimated HR; c Multivariate models were adjusted for T, N, M, and G grade classification and Stage; CI, confidence interval; HR, hazard ratio; DAPK1, death associated protein kinase 1.