Table 1.
Selected characteristics of the study patients
| Characteristics | N (%) |
|---|---|
| Age, Mean (SD) | 59.2 (10.6) |
| Sex | |
| Men | 729 (67.1) |
| Women | 357 (32.9) |
| Smoking status at diagnosis | |
| Never-smoker | 491 (46.1) |
| Former smoker | 428 (40.1) |
| Current smoker | 147 (13.8) |
| BMI at diagnosis, kg/m2 | |
| <25 | 159 (19.9) |
| 25-29.99 (overweight) | 299 (37.5) |
| ≥30 (obese) | 339 (42.5) |
| Histology | |
| Clear Cell | 839 (77.3) |
| Other | 247 (22.7) |
| Clinical Stage | |
| I | 399 (37.5) |
| II | 81 (7.6) |
| III | 292 (27.4) |
| IV | 293 (27.5) |
| Fuhrman Grade | |
| 2 | 358 (36.1) |
| 3 | 421 (42.4) |
| 4 | 214 (21.5) |
| Surgery | |
| Yes | 992 (93.8) |
| No | 66 (6.2) |
| Recurrence | |
| Yes | 440 (40.5) |
| No | 646 (59.5) |
| Survival status | |
| Dead | 467 (43.0) |
| Alive | 619 (57.0) |