Table 1.
Comparison of preoperative and NS variables in the study groups after 1:1 propensity score matching.
| Parameter | Amnioac (n=444) | Non-amniobc (n=444) | p-Value | Standardized difference |
|---|---|---|---|---|
| Age, year | 58 (53–62) | 58 (53–63) | 0.6 | 0.09 |
| PSA, ng/mL | 5.2 (3.9–7) | 5.3 (4.2–7.1) | 0.3 | 0.03 |
| Body mass index, kg/m2 | 27 (24.8–29.4) | 27 (24.8–29.7) | 0.8 | 0.01 |
| Preoperative SHIM score | 24 (21–25) | 24 (21–25) | 0.3 | 0.05 |
| Preoperative AUASS | 5.5 (3–12) | 7.96 (3–11) | 1 | 0.03 |
| Clinical stage | 0.1 | |||
| T1c | 396 (89.2) | 388 (87.4) | −0.06 | |
| T2a | 38 (8.6) | 53 (11.9) | 0.11 | |
| T2b | 7 (1.6) | 2 (0.5) | −0.11 | |
| T2c | 3 (0.7) | 1 (0.2) | −0.07 | |
| Charlson comorbidity index | 1 (1–2) | 1 (1–2) | 0.9 | 0.07 |
| Charlson comorbidity index | 0.9 | |||
| 0–1 | 229 (51.6) | 233 (52.5) | 0.02 | |
| 2–3 | 204 (45.9) | 199 (44.8) | −0.02 | |
| ≥4 | 11 (2.5) | 12 (2.7) | 0.01 | |
| Biopsy preoperative ISUP grade group | 0.8 | |||
| Grade group 1 | 197 (44.4) | 194 (43.7) | −0.01 | |
| Grade group 2 | 160 (36.0) | 159 (35.8) | −0.01 | |
| Grade group 3 | 56 (12.6) | 54 (12.2) | −0.01 | |
| Grade group 4 | 26 (5.9) | 34 (7.7) | 0.07 | |
| Grade group 5 | 5 (1.1) | 3 (0.7) | −0.05 | |
| Degree of NS | 0.9 | |||
| Bilateral partial | 119 (26.8) | 116 (26.1) | −0.01 | |
| Bilateral full | 325 (73.2) | 328 (73.9) | 0.01 | |
| No NS | 0 | 0 | 0 |
SHIM, Sexual Health Inventory for Men; AUASS, American Urological Association symptom score; ISUP, International Society of Urological Pathology; PSA, prostate-specific antigen; NS, nerve-sparing.
a
Patients undergoing NS robotic-assisted radical prostatectomy with dehydrated human amnion chorion membrane allograft placement.
b
Patients undergoing NS robotic-assisted radical prostatectomy without dehydrated human amnion chorion membrane allograft placement.
c
Values are presented as median (interquartile range) or n (%).