Table 3.

Results of multivariable logistic regression for intraoperative bleeding

Variable	Adjusted OR	95% CI	p-value
Q2 vs Q1	2.15	0.83–5.76	0.119
Q3 vs Q1	0.71	0.21–2.37	0.578
Q4 vs Q1	0.48	0.13–1.69	0.254
Age (per year increase)	0.995	0.970–1.020	0.725
Charlson Comorbidity Index	1.42	1.02–2.03	0.047
TG18 Grade 2 vs Grade 1	0.21	0.010–1.51	0.176
TG18 Grade 3 vs Grade 1	0.19	0.009–1.60	0.174
Female vs Male	0.96	0.49–1.86	0.895
One-stage procedure vs staged	0.88	0.32–2.35	0.789
Prior ERCP vs no ERCP	2.44	0.87–7.29	0.095

Q1–Q4 refer to quartiles of the interval between gallbladder drainage and surgery: Q1 ≤ 9 days; Q2 = 10–17 days; Q3 = 18–32 days; Q4 ≥ 32 days.

OR, odds ratio; CI, confidence interval; TG18, Tokyo Guidelines 2018; ERCP, endoscopic retrograde cholangiopancreatography.

Model calibration: Hosmer–Lemeshow χ² = 4.5, df = 8, p = 0.85.