Table 1. Uni- and multivariable regression models to estimate factors associated with nephrectomy.
| Nephrectomy N (%) | No nephrectomy N (%) | Univariable OR (95% CI) | Multivariable OR (95% CI) | |
|---|---|---|---|---|
| N | 1045 | 460 | ||
| Gender | ||||
| Maleb | 721 (69.5) | 317 (30.5) | ||
| Female | 324(69.4) | 143 (30.6) | 1.00 (0.79–1.28) | |
| Age at diagnosis (per year increase) | 0.96 (0.95–0.97) | 0.96 (0.95–0.97) | ||
| Race | ||||
| Black | 47(47.0) | 53(53.0) | ||
| White | 924(70.9) | 380(29.1) | 2.74 (1.82–4.13) | 3.03(1.91–4.80) |
| Yellow or Unknown | 74(73.2) | 27(26.7) | 3.09 (1.71–5.58) | 3.68(1.90–7.10) |
| Tumor size | 1.0055 (1.0025-1.0086) | 0.9997(0.997-1.002) | ||
| T stage | ||||
| T1a | 48(48.0) | 52(52.0) | ||
| T1b | 111(52.1) | 102(47.9) | 1.18 (0.73-1.9) | 1.14(0.69–1.89) |
| T2 | 175(62.1) | 107(37.9) | 1.77 (1.12-2.81) | 1.60(0.95–2.70) |
| T3a | 260(86.7) | 40(13.3) | 7.04 (4.21-11.78) | 7.63(4.32–13.47) |
| T3b | 363(83.3) | 73(16.7) | 5.39 (3.38-8.58) | 5.87(3.46–9.98) |
| T3c | 25(73.5) | 9(26.5) | 3.01 (1.28-7.09) | 3.10(1.24–7.75) |
| T4 | 63(45.0) | 77(55.0) | 0.89 (0.53-1.48) | 0.92(0.52–1.65) |
| N stage | ||||
| N0 | 787(71.5) | 314(28.5) | ||
| N1 | 156(63.2) | 91(36.8) | 0.68 (0.51-0.91) | 0.46(0.33–0.64) |
| N2 | 102(65.0) | 55(35.0) | 0.74 (0.52-1.05) | 0.51(0.34–0.77) |
| Median household income (in tens) 2000 | 1(0.9999-1.0001) | |||
| % Unemployed 2000 | 0.9998 (0.9993,1.0003) |
OR = odds ratio; CI = confidential interval