Table 2.
Patient and disease characteristics
| Factor | No. (%) | % with hypercoagulability | P |
| Hypercoagulability | |||
| No | 173 (60) | - | - |
| Yes | 116 (40) | - | - |
| Extent of hypercoagulability | |||
| Low | 13 (11) | - | - |
| Intermediate | 24 (21) | - | - |
| High | 79 (68) | - | - |
| Age | |||
| < 60 | 107 (37) | 34 | |
| ≥ 60 | 182 (63) | 44 | .004 |
| Gender | |||
| Male | 224 (78) | 39 | |
| Female | 65 (22) | 45 | .61 |
| ECOG | |||
| 0 | 110 (38) | 38 | |
| 1 | 170 (59) | 41 | |
| 2 | 9 (3) | 44 | .07 |
| Prior nephrectomy | |||
| No | 25 (9) | 48 | |
| Yes | 264 (91) | 40 | .03 |
| Time from diagnosis to on-study | |||
| ≥ 1 y | 165 (57) | 30 | |
| < 1 y | 124 (43) | 53 | < .001 |
| Number of metastatic sites | |||
| 0, 1 | 125 (43) | 17 | |
| ≥ 2 | 164 (57) | 58 | .001 |
| Bone metastasis | |||
| No | 199 (69) | 38 | |
| Yes | 90 (31) | 44 | .06 |
| Liver metastasis | |||
| No | 211 (73) | 34 | |
| Yes | 78 (27) | 56 | .02 |
| MSKCC prognostic groups | |||
| Favorable | 121 (42) | 46 | |
| Intermediate | 64 (22) | 22 | |
| Poor | 104 (36) | 44 | .84 |
| Histology | |||
| Clear cell | 231 (80) | 42 | |
| Non-clear | 58 (20) | 33 | .04 |
| Venous thrombosis | |||
| No | 275 | 37 | |
| Yes | 14 | 100 | - |