Table 2. Clinical characteristics of the BLCA patients.
| Overall | High risk | Low risk | p | |
| N | 403 | 201 | 202 | |
| Age (mean (SD)) | 68.06 (10.60) | 69.54 (10.05) | 66.58 (10.94) | 0.005 |
| Gender = Female/Male (%) | 105/298 (26.1/73.9) | 60/141 (29.9/70.1) | 45/157 (22.3/77.7) | 0.106 |
| Grade (%) | <0.001 | |||
| High Grade | 380 (94.3) | 197 (98.0) | 183 (90.6) | |
| Low Grade | 20 (5.0) | 1 (0.5) | 19 (9.4) | |
| Unknown | 3 (0.7) | 3 (1.5) | 0 (0.0) | |
| Stage (%) | <0.001 | |||
| Stage I | 1 (0.2) | 0 (0.0) | 1 (0.5) | |
| Stage II | 127 (31.5) | 44 (21.9) | 83 (41.1) | |
| Stage III | 138 (34.2) | 74 (36.8) | 64 (31.7) | |
| Stage IV | 133 (33.0) | 82 (40.8) | 51 (25.2) | |
| Unknown | 4 (1.0) | 1 (0.5) | 3 (1.5) | |
| T (%) | 0.001 | |||
| T0 | 1 (0.2) | 0 (0.0) | 1 (0.5) | |
| T1 | 3 (0.7) | 1 (0.5) | 2 (1.0) | |
| T2 | 37 (9.2) | 8 (4.0) | 29 (14.4) | |
| T2a | 25 (6.2) | 9 (4.5) | 16 (7.9) | |
| T2b | 56 (13.9) | 27 (13.4) | 29 (14.4) | |
| T3 | 42 (10.4) | 23 (11.4) | 19 (9.4) | |
| T3a | 69 (17.1) | 32 (15.9) | 37 (18.3) | |
| T3b | 80 (19.9) | 49 (24.4) | 31 (15.3) | |
| T4 | 10 (2.5) | 9 (4.5) | 1 (0.5) | |
| T4a | 43 (10.7) | 27 (13.4) | 16 (7.9) | |
| T4b | 5 (1.2) | 4 (2.0) | 1 (0.5) | |
| TX | 1 (0.2) | 0 (0.0) | 1 (0.5) | |
| Unknown | 31 (7.7) | 12 (6.0) | 19 (9.4) | |
| M (%) | 0.015 | |||
| M0 | 193 (47.9) | 82 (40.8) | 111 (55.0) | |
| M1 | 11 (2.7) | 8 (4.0) | 3 (1.5) | |
| MX | 197 (48.9) | 110 (54.7) | 87 (43.1) | |
| Unknown | 2 (0.5) | 1 (0.5) | 1 (0.5) | |
| N (%) | 0.028 | |||
| N0 | 234 (58.1) | 104 (51.7) | 130 (64.4) | |
| N1 | 46 (11.4) | 31 (15.4) | 15 (7.4) | |
| N2 | 75 (18.6) | 43 (21.4) | 32 (15.8) | |
| N3 | 7 (1.7) | 5 (2.5) | 2 (1.0) | |
| NX | 36 (8.9) | 15 (7.5) | 21 (10.4) | |
| Unknown | 5 (1.2) | 3 (1.5) | 2 (1.0) | |
| RiskScore (median [IQR]) | 1.18 [0.72, 1.76] | 1.76 [1.50, 2.14] | 0.72 [0.43, 0.95] | <0.001 |