Table 4 Results of Univariable and Multivariable Regression for bile leakage after primary closure following LCBDE

Sex (male/Female)

0.718 (0.252–2.048)

0.53

Age (years) (≥70/<70)

1.103 (0.331–3.683)

0.87

ASA score (I + II/III + IV)

2.168 (0.748–6.289)

0.15

Serum leukocytes (≥10/<10 × 10⁹/L)

0.634 (0.135–2.982)

0.56

Total bilirubin (≥23/<23 umol/L)

0.335 (0.110–1.020)

0.05

0.587 (0.146–2.132)

0.23

No. of stones (≥3/<3)

1.267 (0.410–3.921)

0.68

Diameter of CBD (<1/≥1 cm)

3.604 (1.092–11.898)

0.04

3.799 (1.081–13.349)

0.04

Gallstone (Yes/No)

0.871 (0.298–2.546)

0.80

Operative time (≥2/<2 h)

0.838 (0.222–3.153)

0.79

Total blood loss (≥50/<50 ml)

0.296 (0.037–2.353)

0.25

Method of suture (continuous/ interrupted)

1.287 (0.335–4.951)

0.71

Length of choledochotomy (≥1.5/<1.5 cm)

2.643 (0.749–9.324)

0.13

Surgeon’s experience (initial 70 cases/later cases)

3.356 (1.026–10.974)

0.04

4.228 (1.330–13.438)

0.03