[Retracted] Hysterectomy by Transvaginal Natural Orifice Transluminal Endoscopic Surgery versus Transumbilical Laparoscopic Single-Site Surgery: A Single-Center Experience from East China

Table 3

Interphase comparison of patient characteristics and postoperative outcomes.

	Phase I (, cases 1-43)	Phase II (, cases 44-134)	Phase III (, cases 135-160)	Phase IV (, cases 161-228)
BMI (kg/m^2)					0.09
Uterine weight (g)					<0.001
Operation time (min)					<0.001
Blood loss (ml)					0.01
Postoperative stay (days)					0.12

There was significant difference between phases I, II, III, and phase IV.