Table 4.

Multivariable regression analysis of factors associated with postoperative complications

	Any complicationsa (aOR, 95% CI)	p value	Major complicationsb (aOR, 95% CI)	p value	Minor complicationsc (aOR, 95% CI)	p value
Lower BMIb	Reference		Reference		Reference
Higher BMI	1.06 (1.01–1.10)	0.017	0.96 (0.88–1.04)	0.320	1.13 (1.07–1.19)	< 0.001
BMI groups
Normal BMI (18.5–24.9)	Reference		Reference		Reference
Underweight (< 18.5)	1.04 (0.82–1.32)	0.748	0.93 (0.67–1.30)	0.670	1.18 (0.89–1.56)	0.242
Overweight (25–29.9)	0.97 (0.92–1.02)	0.219	0.87 (0.80–0.93)	< 0.001	1.02 (0.96–1.09)	0.547
Obesity Class 1 (30–34.9)	0.94 (0.89–1.00)	0.050	0.84 (0.77–0.91)	< 0.001	1.01 (0.94–1.09)	0.761
Obesity Class 2 (35–39.9)	1.01 (0.95–1.08)	0.764	0.82 (0.75–0.90)	< 0.001	1.12 (1.03–1.21)	0.006
Obesity Class 3 (≥ 40.0)	1.04 (0.97–1.12)	0.316	0.83 (0.75–0.91)	< 0.001	1.17 (1.08–1.28)	< 0.001

BMI, body mass index

^aAdjusted for: age, race, ethnicity, tobacco use, diabetes, chronic hypertension, immunosuppressive therapy, chronic obstructive pulmonary disease, ASA classification III/IV, preoperative blood transfusion, surgical indication, hysterectomy type, uterine weight, concomitant surgical procedures

^bAdjusted for: age, race, tobacco use, diabetes, chronic hypertension, immunosuppressive therapy, chronic obstructive pulmonary disease, ASA classification III/IV, preoperative blood transfusion, surgical indication, hysterectomy type, uterine weight, concomitant surgical procedures

^cKolmogorov–Smirnov test—any complications—35.0, major complications—39.44, minor complication—35.16