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Table 4 Comparison between the two participating transplant centers

From: External validation of a modified model of Acute Physiology and Chronic Health Evaluation (APACHE) II for orthotopic liver transplant patients

Characteristic KFNGH UW P
Number of patients 63 111  
Age (years) 46.25 ± 13.97 51.82 ± 10.12 0.04
Females/males 27/36 43/68 NS
Hepatitis C 36 (57) 10 (9) <0.001
EtOH 0 (0) 22 (20) <0.001
HCV-EtOH 2 (3) 23 (21) 0.002
Other etiologies 25 (40) 56 (50) NS
Actual mortality 6 (9.52) 4 (3.60) NS
APACHE II score 21.09 ± 5.01 14.37 ± 3.59 <0.001
ROD, original model 20.55 ± 12.94 8.65 ± 4.38 <0.001
ROD, new model 14.54 ± 10.73 5.68 ± 3.01 <0.001
SMR, original model; 95% CI 0.46; 0.17–0.95 0.42; 0.11–1.04  
SMR, new model; 95% CI 0.65; 0.25–1.35 0.63; 0.17–1.57  
  1. Figures in parentheses are percentages. EtOH, alcohol liver disease; HCV, hepatitis C virus; KFNGH, King Fahad National Guard Hospital; NS, not significant; ROD, risk of death; SMR, standardized mortality ratio; UW, University of Wisconsin.