Table 1. Clinical characteristics of patients with T1a, T1b renal mass.
| Variables | Entire cohort | Propensity-score matched cohort | ||||
|---|---|---|---|---|---|---|
| T1a (N = 180) | T1b (N = 60) | P-value | T1a (N = 60) | T1b (N = 60) | P-value | |
| Male | 134 | 33 | 0.03 | 36 | 43 | 0.178 |
| Age, yrs. (IQR) | 51 (45–62) | 49.5 (39.8–62) | 0.532 | 52 (46–62) | 49.5 (39.8–62) | 0.355 |
| BMI, kg/m2 (IQR) | 23.4 (21.2–25.3) | 24.7 (22.7–27.7) | 0.103 | 25 (22.9–27.2) | 24.7 (22.7–27.7) | 0.531 |
| ASA score category | 0.037 | 0.538 | ||||
| 1 | 130 | 33 | 34 | 33 | ||
| 2 | 45 | 24 | 24 | 24 | ||
| 3 | 5 | 3 | 2 | 3 | ||
| Hypertension | 57 | 15 | 18 | 15 | ||
| Diabetes mellitus | 35 | 7 | 13 | 7 | ||
| Median tumor size, cm (IQR) | 2.6 (1.8–3.7) | 5 (4.5–5.9) | <0.001 | 2.6 (2.1–3.4) | 5 (4.5–5.9) | <0.001 |
| Rt. laterality, n (%) | 118 (65.5) | 31 (51.6) | 0.082 | 35 (58.3) | 31 (51.6) | 0.161 |
| Median R.E.N.A.L. score (IQR) | 7 (6–9) | 9 (8–10) | <0.001 | 8 (6–9) | 9 (8–10) | <0.001 |
| Pathology | Clear cell: 45 | Clear cell: 45 | ||||
| Papillary cell: 1 | Papillary cell: 3 | |||||
| Chromophobe: 3 | Chromophobe: 2 | |||||
| Cystic RCC: 2 | Cystic RCC: 3 | |||||
| AML: 7 | AML: 7 | |||||
| Oncocytoma: 2 | ||||||