Table 6.
Logistic regression for the evaluation of demographical and anatomical variables associated with choledochal lithiasis
| Univariate logistic regression (OR 95% CI) | P | Multivariate logistic regression (OR 95% CI) | P | |
|---|---|---|---|---|
| Gender (M) | 1.322 (0.778–2.246) | 0.302 | ||
| Age (years)* | 1.063 (1.041–1.086) | < 0.001 | 1.057 (1.034–1.081) | < 0.001 |
| Intra-hepatic biliary variants4 | ||||
| Type 1 | Referent | - | ||
| Type 2 | 1.655 (0.866–3.161) | 0.127 | ||
| Type 3a | 0.966 (0.457–2.041) | 0.928 | ||
| Type 3b | 0.490 (0.112–2.138) | 0.342 | ||
| CDDP length (mm)* | 1.016 (0.997–1.036) | 0.103 | ||
| EHBD length (mm)* | 1.053 (1.032–1.075) | < 0.001 | 1.044 (1.022–1.066) | < 0.001 |
| Ratio CDDP/EHBD (%)* | 0.152 (0.023–1.017) | 0.052 | ||
| New classification for EHBD | ||||
| Type 1 (ratio CDDP/EHBD ≤ 50%) | 1.642 (0.672–4.013) | 0.277 | ||
| Type 2 (ratio CDDP/EHBD > 50% and ≤ 75%) | 0.848 (0.375–1.922) | 0.694 | ||
| Type 3 (ratio CDDP/EHBD > 75%) | Referent | - | ||
| Standard classification for EHBD | ||||
| Type 1 (ratio CDDP/EHBD ≤ 33%) | 1.695 (0.453–6.343) | 0.433 | ||
| Type 2 (ratio CDDP/EHBD > 33% and ≤ 66%) | 1.372 (0.780–2.413) | 0.273 | ||
| Type 3 (ratio CDDP/EHBD > 66%) | Referent | - | ||
| CD radial insertion in the EHBD | ||||
| Lateral | Referent | - | ||
| Posterior | 1.263 (0.560–2.846) | 0.574 | ||
| Medial | 2.126 (1.085–4.165) | 0.028 | ||
| Intra-pancreatic CD | 2.542 (1.379–4.687) | 0.003 | 2.354 (1.204–4.605) | 0.012 |
| Previous cholecystectomy | 1.508 (0.833–2.729) | 0.175 | ||
CDDP, duct to duodenal papilla; EHBD, extrahepatic bile duct; CD, cystic duct; MRCP, magnetic resonance cholangiopancreatography
*Per unit increase