Table 1.
Characteristics of the study population
| NMIBC group | MIBC group | Controls | |
|---|---|---|---|
| N = 164 (%) | N = 142 (%) | N = 459 (%) | |
| Sex | |||
| Male | 128 (78.0) | 113 (79.6) | 355 (76.4) |
| Female | 36 (22.0) | 29 (20.4) | 104 (23.6) |
| Age at first diagnosis (mean ± SD) | 61.8 ± 12.7 | 65.9 ± 10.8 | 64.6 ± 5.7 |
| Smoking status | |||
| Smokers | 84 (51.2) | 75 (52.8) | 214 (46.6) |
| Non-smokers | 80 (48.8) | 67 (47.2) | 245 (53.4) |
| Clinical stage | |||
| Ta | 10 (6.1) | – | – |
| T1 | 154 (93.9) | – | – |
| T2 | – | 87 (61.3) | – |
| T3a | – | 31 (21.8) | – |
| T3b | – | 13 (9.2) | – |
| T4 | – | 11 (7.7) | – |
| Tumor grade | |||
| Low grade | 109 (66.5) | 23 (16.2) | – |
| High grade | 55 (33.5) | 119 (83.8) | – |