Skip to main content
. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Gynecol Oncol. 2020 May 10;158(1):59–65. doi: 10.1016/j.ygyno.2020.04.045

Table 3.

Association between annualized hospital surgical volume and perioperative complications (n=4822).

Characteristic Any complicationsa
 Multiple complicationsb
regression coefficient (95%CI) P-value Odds ratio (95%CI) P-value
Unadjusted −0.016 (−0.028 to −0.003) 0.014 0.91 (0.84 to 0.98) 0.019
Adjusted for age −0.017 (−0.029 to −0.004) 0.007 0.90 (0.83 to 0.98) 0.017
Adjusted for CCI −0.023 (−0.035 to −0.011) <0.001 0.87 (0.80 to 0.95) 0.001
Adjusted for age and CCI −0.023 (−0.034 to −0.011) <0.001 0.89 (0.82 to 0.97) 0.006

Abbreviations: CI, confidence interval; and CCI, Charlson Comorbidity Index.

a

Linear regression models: the extent of perioperative complication was analyzed as a continuous variable. Intercept with regression coefficient value for perioperative complications per each increment increase of annualized hospital surgical volume for MIS is estimated.

b

Binary logistic regression models: outcome measures were dichotomized as ≥2 complications versus <2 complications. Odds ratio for multiple complications per each increment increase of annualized hospital surgical volume for MIS is estimated. Adjustment factors were a priori known factors for perioperative complications. Both age and CCI were examined as continuous variables.