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. 2019 Jul 10;19:88. doi: 10.1186/s12893-019-0554-0

Table 2.

Interphase comparisons of patient characteristics and peri/postoperative outcomes

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

Data are presented as mean ± SD or n (%)

aKruskal-Wallis test