Table 1.
Comparison of preoperative patient characteristics (flap vs. control) after 1:3 propensity score (PS) matching, reporting the median value with the interquartile range (IQR) and the number of patients with the percentage; the standardized mean difference evaluates the degree of covariate imbalance. PSA (prostate-specific antigen), BMI (body mass index), diabetes mellitus (DM), Charlson comorbidity index (CCI), AUA (American Urological Association), and ISUP (International Society of Urological Pathology).
| Parameters | Flap (n = 567) |
Control (n = 1700) |
p | Standardized Mean Difference after 1:3 PS Matching |
|---|---|---|---|---|
| Age (years) |
65 (60–70) |
65 (60–70) |
1.0 | −0.18 |
| PSA (ng/mL) |
6.4 (4.8–9.6) |
6.5 (4.8–9.5) |
0.9 | −0.015 |
| BMI (Kg/m2) |
27.8 (25.4–30.9) |
28.1 (25.5–30.9) |
0.8 | 0.028 |
| Diabetes (n, %) | 0.6 | |||
| No | 479 (84.5) | 1419 (83.5) | −0.028 | |
| Yes | 88 (15.5) | 281(16.5) | 0.028 | |
| Charlson Comorbidity Index (n, %) | 0.16 | |||
| 0 | 14 (2.5) | 26 (1.4) | ||
| 1–2 | 335 (59) | 963 (56.7) | ||
| 3–4 | 200 (35.3) | 635 (37.4) | ||
| >4 | 18 (3.2) | 76 (4.5) | ||
| Preoperative AUA |
8 | 8 | 1 | 0.02 |
| (4–15) | (4–15) | |||
| Biopsy ISUP Grade (n, %) | 0.9 | |||
| Group 1 | 23 (4.1) | 65 (3.8) | –0.012 | |
| Group 2 | 214 (37.7) | 647 (38.1) | 0.007 | |
| Group 3 | 166 (29.3) | 496 (29.2) | 0.002 | |
| Group 4 | 96 (16.9) | 298 (17.5) | –0.016 | |
| Group 5 | 68 (12) | 194 (11.4) | –0.018 |