Skip to main content

Table 2 Demographic data on the patients under study

From: The impact of preoperative biliary drainage on postoperative outcomes in patients with malignant obstructive jaundice: a retrospective analysis of 290 consecutive cases at a single medical center

Characteristics Total (n = 290) DG (n = 131) PG (n = 159) Statistic P value
Age (years) Mean ± SD (range) 62.21 ± 9.41 (24‑80) 62.21 ± 9.60 (24‑80) 62.2 ± 9.30 (28‑80) t = 0.007 0.994
≥ 70, n (%) 63 (21.72%) 29 (22.14%) 34 (21.38%) χ2 = 0.024 0.877
< 70, n (%) 227 (78.28%) 102 (77.86%) 125 (78.62%)
Sex Male, n (%) 185 (63.79%) 82 (62.60%) 103 (64.78%) χ2 = 0.148 0.700
Female, n (%) 105 (36.21%) 49 (37.40%) 56 (35.22%)
BMI (kg/m2) Mean ± SD 22.72 ± 3.02 22.52 ± 2.65 22.86 ± 3.25 t = 0.862 0.389
ASA score I 22 (7.59%) 10 (7.63%) 12 (7.55%) χ2 = 17.810 < 0.001
II 237 (81.72%) 118 (90.08%) 119 (74.84%)
III‑IV 31 (10.69%) 3 (2.29%) 28 (17.61%)
Medical history Hepatolithiasis 12 2 10 χ2 = 1.752 0.636*
Cholecystolithiasis 29 11 18
HBP 50 17 33
Diabetes 26 8 18
Obstruction site Proximal 172 82 90 χ2 = 1.068 0.301
Distal 118 49 69
Histopathological diagnosis iCCA 4 3 1 χ2 = 4.187 0.664*
GBC 14 8 6
pCCA 153 71 82
Biliary carcinoma 51 21 30
Ampullary carcinoma 47 21 26
PDAC 20 7 13
Hepatocellular carcinoma 1 0 1
  1. HBP high blood pressure
  2. *Fisher’s exact test in Monte Carlo mode