Table 2.
Univariate analysis of clinical parameters with interquartile ranges
| Combined group data median (IQR) | Group 1 median (IQR) | Group 2 median (IQR) | |
| Age (yr) | 15.8 (12.5, 17.3) | 16.1 (12.2, 17.3) | 14.8 (12.5, 15.4) |
| Time to procedure (d) | 2 (1.0, 2.3) | 2 (1.0, 2.0) | 2 (1.0-3.0) |
| US CBD diameter (mm) | 8.8 (6.8, 10.5) | 9 (7.0, 11.0) | 8 (6.1-10.0) |
| ERCP CBD diameter (mm) | 11 (9.0, 13.0) | 11 (9.3, 13) | 9 (7.0, 10.0) |
| Total bilirubin (mg/dL) | 2 (0.8, 3.6) | 2.5 (0.9, 3.8) | 0.9 (0.6-1.5) |
| Conjugated bilirubin (mg/dL) | 1 (0.0-2.1) | 1.3 (0.0, 2.4) | 0 (0, 0) |
| ALT (u/L) | 242 (142.5, 386.5) | 253 (145.0, 403.0) | 166 (122.0-166.0) |
| AST (u/L) | 128 (86.0, 188.0) | 129 (89.0, 215.0) | 119 (53-150) |
| γGT (u/L) | 259 (177.0, 453.5) | 259 (181.0, 521.0) | 203 (159.0-333) |
| Alkaline phosphatase (u/L) | 252 (179.0, 349.0) | 254 (182.0, 405.0) | 208 (107.0-256.0) |
Combined group data, Group 1 (patients with CBDS) and Group 2 (patients without CBDS). IQR: Interquartile range; CBD: Common bile duct; ALT: Alanine aminotransferase; AST: Aspartate aminotransferase; γGT: Gamma-glutamyl transferase; US: Ultrasound; ERCP: Endoscopic retrograde cholangiography.