Table 1 The training and test cohorts patients’ baseline demographics, clinical, and radiologic characteristics
Characteristics | All | Training cohort (n = 137) | Test cohort (n = 59) | p |
|---|---|---|---|---|
Age, mean ± SDa, years | 67.821 ± 10.468 | 68.066 ± 11.184 | 67.254 ± 8.64 | 0.360 |
Sex | 0.662 | |||
Male | 160 (81.6%) | 117 (85.4%) | 43 (72.9%) | |
Female | 36 (18.4%) | 20 (14.6%) | 16 (27.1%) | |
Smoking | 0.773 | |||
Yes | 145 (73.9%) | 108 (78.8%) | 37 (62.7%) | |
No | 51 (26.1%) | 38 (21.2%) | 13 (37.3%) | |
Clinical complaint | 0.493 | |||
Hematuria | 113 (57.7%) | 82 (59.9%) | 31 (52.5%) | |
Hydronephrosis | 2 (1.0%) | 2 (1.5%) | 0 (0%) | |
Incidental finging | 81 (41.3%) | 53 (38.7%) | 28 (47.5%) | |
Number of lesions | 0.141 | |||
Multiple | 58 (29.6%) | 45 (32.8%) | 13 (22.0%) | |
Single | 138 (70.4%) | 92 (67.2%) | 46 (78.0%) | |
Histopathologic grade | 0.000 | |||
High grade | 130 (66.3%) | 92 (67.2%) | 38 (64.4%) | |
Low grade | 66 (33.7%) | 45 (32.8%) | 21 (35.6%) | |
Calcification | 0.915 | |||
Yes | 70 (35.7%) | 47 (34.3%) | 23 (39.0%) | |
No | 126 (64.3%) | 90 (65.7%) | 36 (61.0%) | |
Lesion length, mm | 17.451 ± 9.042 | 16.015 ± 8.215 | 19.015 ± 10.341 | 0.109 |
Tortuous blood vessels | 0.000 | |||
Yes | 81 (41.3%) | 58 (42.3%) | 23 (39.0%) | |
No | 115 (58.7%) | 79 (57.7%) | 36 (61.0%) |