Table 3.

Comparison of the criteria for post-operative liver failure based on peak post-operative serum bilirubin > 7 mg/dl and ‘50-50 criteria’ on post-operative day 5 in the prediction of hepatic morbidity, overall morbidity and 90-day mortality

Outcome measure	‘50-50 criteria’ on post-operative day 5				Peak serum bilirubin concentration > 7 mg/dl
Sensitivity	Specificity	PPV	NPV	Sensitivity	Specificity	PPV	NPV
Hepatic morbidity	4.6%	100%	100%	82.1%	18.2%	100%	100%	84.2%
Overall morbidity	3.0%	100%	100%	72.7%	12.1%	100%	100%	74.6%
90-day mortality	9.1%	99.6%	50.0%	95.7%	27.3%	97.8%	37.5%	96.5%

PPV, positive predictive value; NPV, negative predictive value.