Table 2 Interphase comparisons of patient characteristics and peri/postoperative outcomes
From: Learning curve analysis of transvaginal natural orifice transluminal endoscopic hysterectomy
Phase I (n = 20, case 1–20) | Phase II (n = 80, case 21–100) | Phase III (n = 80, case 101–180) | Phase IV (n = 60, case 181–240) | P a | |
|---|---|---|---|---|---|
Body Mass Index (kg/m2) | 24.3 ± 3.6 | 24.0 ± 4.7 | 24.4 ± 4.1 | 23.9 ± 3.3 | 0.919 |
Uterine weight (g) | 352.2 ± 159.9 | 381.3 ± 187.7 | 413.5 ± 204.0 | 459.8 ± 195.4 | 0.064 |
Operating time (min) | 86.3 ± 23.7 | 71.0 ± 21.4 | 76.0 ± 20.7 | 81.3 ± 23.6 | 0.001 |
Blood loss (mL) | 230.0 ± 165.8 | 175.9 ± 132.6 | 146.6 ± 138.7 | 161.5 ± 156.3 | 0.122 |
Blood transfusion | 4 (1.7) | 1 (0.4) | 5 (2.1) | 3 (1.3) | 0.020 |
Complication | 1 (0.4) | 0 (0) | 4 (1.7) | 0 (0) | 0.039 |
Postoperative stay (days) | 2.2 ± 0.5 | 2.1 ± 0.4 | 2.0 ± 0.5 | 2.1 ± 0.3 | 0.669 |