Effect of annualized surgeon volume on major surgical complications for abdominal and laparoscopic radical hysterectomy for cervical cancer in China, 2004–2016: a retrospective cohort study

Table 5 Multivariable analysis of factors associated with complications

	Abdominal surgeon volume				P value	Laparoscopic surgeon volume				P value
	Low	Intermediate	High		P value	Low	intermediate	High		P value
Any 1 complication	3.06%	3.42%	2.01%		0.10	5.19%	5.69%	5.16%		0.26
			1.20	0.87–1.66	0.27			1.14	0.82–1.58	0.43
			1.39	1.02–1.89	0.04			1.26	0.95–1.67	0.11
Intraoperative complication	0.56%	0.65%	0.33%		0.21	1.48%	0.91%	1.53%		0.46
			0.46	0.19–1.09	0.08			1.23	0.67–2.26	0.51
			0.58	0.25–1.38	0.22			0.86	0.48–1.54	0.61
Postoperative complication	2.52%	2.87%	1.69%		0.04	3.86%	4.81%	3.83%		0.13
			1.38	0.97–1.96	0.07			1.09	0.75–1.58	0.65
			1.55	1.11–2.15	0.01			1.34	0.98–1.83	0.07

The middle row for each complication class was adjusted for clinical and demographic factors, including age, year of diagnosis, urban–rural distribution, hospital function, region, city scale, mode of delivery, comorbidity, FIGO stage, gross type, histological type, preoperative treatment, lymph node dissection, and hysterectomy type reported, with the odds ratio (95% CI) of low vs. high volume. The bottom row for each complication class is adjusted for the factors mentioned above, with the odds ratio (95% CI) of intermediate vs. high volume

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