Table 3.

Results of a logistic regression analysis

Variables	Univariate analysis				Multivariate analysis†
	OR	95% CI		p value	OR	95% CI		p value
		Lower	Upper			Lower	Upper
Sex: Male	4.95	1.38	17.74	0.014	3.85	0.92	16.09	0.065
Age (years) ≥ 67	0.43	0.17	1.11	0.081	0.39	0.11	1.44	0.157
BMI ≥ 21	1.03	0.40	2.62	0.958
Section: Rb	1.71	0.64	4.55	0.283
NLR ≥ 2.4	4.80	1.52	15.15	0.007	3.42	0.73	16.00	0.119
LMR ≥ 5.3	0.53	0.20	1.40	0.199	2.90	0.62	13.58	0.175
Alb ≥ 4	0.39	0.15	1.01	0.051	0.29	0.07	1.16	0.081
Stoma: +	0.45	0.16	1.32	0.146	0.05	0.01	0.26	< 0.001
Drain: +	0.82	0.32	2.09	0.675
Operation time (min) ≥ 373	4.51	1.63	12.52	0.004	9.83	1.98	48.86	0.005
Blood loss (ml) ≥ 105	3.75	1.40	10.04	0.009	5.05	1.05	24.23	0.043
Tumor size (mm) ≥ 41	5.49	1.97	15.30	0.001	2.66	0.70	10.05	0.149
Laparotomy: +	3.68	1.09	12.38	0.035
UICC-T: (T3, T4) vs. (T0, Tis, T1, T2)	3.37	1.22	9.30	0.019
UICC-stage: (III, IV) vs. (0, I, II)	2.00	0.78	5.13	0.149
Lateral pelvis (mm) ≥ 142	1.24	0.49	3.15	0.648
Sacrum (mm) ≥ 129	2.81	1.09	7.26	0.033
Pelvic inlet (mm) ≥ 113	2.06	0.75	5.70	0.162	5.07	1.13	22.66	0.034
Pelvic outlet (mm) ≥ 91	1.65	0.65	4.20	0.293

†Variables were included in the Firth’s bias-reduced multiple logistic regression analysis with the stepwise AIC variable selection method when a p-value < 0.20 was observed in the univariate analysis

AIC Akaike’s Information Criterion, BMI body mass index, NLR neutrophil–lymphocyte ratio, LMR lymphocyte-monocyte ratio, Alb serum albumin, Tis tumor in situ, OR odds ratio, CI confidence interval