Table 1 The description of compared models
Method | Variants | Description | |
|---|---|---|---|
Comorbidity methods | CCI | CCI | Charlson individual comorbidities (binary variables) |
CCI categorized | number of Charlson comorbidities excluding liver disease (0, 1, 2, ≥3) | ||
CCI score | the score of Charlson comorbidities (weighted score) | ||
|  | CCI score categorized | the score of CCI categorized as 0, 1–2, 3–4, ≥5 | |
ECI | ECI | Elixhauser individual comorbidities (binary variables) | |
ECI categorized | number of Elixhauser comorbidities (0, 1, 2, ≥3) | ||
Liver specific severity methods | MELD | MELD score | calculated by total bilirubin, PT-INR, and creatinine |
MELDNa score | calculated by MELD score and serum sodium | ||
5vMELD score | calculated by MELDNa score and serum albumin | ||
CTP | CTP | the classification of Child-Turcotte-Pugh (including the individual binary variables of hepatic encephalopathy, ascites, total bilirubin, prothrombin time, and albumin) | |
CTP score | calculated by summing the weighted score of each CTP variable | ||
Comorbidity + Liver severity | MELDNa score + ECI | the score of MELDNa + individual binary variable of Elixhauser comorbidities | |
CTP + ECI | individual binary variables of CTP + individual binary variable of Elixhauser comorbidities | ||