CCS groups included in the model with their c statistics and relevant variables
| Group | C statistic | Age | Charlson | Deprivation | LOS | Month | Sex | Source organisation type | CCS subgroup | Urgency | Year |
| Septicemia (except in labour) | 0.827 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Cancer of oesophagus | 0.840 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Cancer of stomach | 0.811 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Cancer of colon | 0.857 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Cancer of rectum and anus | 0.858 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Cancer of pancreas | 0.776 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Cancer of bronchus, lung | 0.873 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Cancer of breast | 0.957 | Yes | Yes | Yes | Yes | ||||||
| Cancer of prostate | 0.925 | Yes | Yes | Yes | Yes | Yes | |||||
| Cancer of bladder | 0.939 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Non-Hodgkin's lymphoma | 0.923 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Leukaemias | 0.930 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Secondary malignancies | 0.908 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Neoplasms of unspecified nature or uncertain behaviour | 0.916 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Diabetes mellitus with complications | 0.848 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Fluid and electrolyte disorders | 0.807 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Deficiency and other anaemia | 0.911 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Coma, stupor and brain damage | 0.728 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Heart valve disorders | 0.809 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Acute myocardial infarction | 0.782 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Coronary atherosclerosis and other heart disease | 0.832 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Pulmonary heart disease | 0.798 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Cardiac dysrhythmias | 0.874 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Cardiac arrest and ventricular fibrillation | 0.809 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Congestive heart failure, non-hypertensive | 0.677 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Acute cerebrovascular disease | 0.775 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Peripheral and visceral atherosclerosis | 0.906 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Aortic, peripheral and visceral artery aneurysms | 0.866 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Aortic and peripheral arterial embolism or thrombosis | 0.880 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Other circulatory disease | 0.862 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Pneumonia | 0.810 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Chronic obstructive pulmonary disease and bronchiectasis | 0.778 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Aspiration pneumonitis, food/vomitus | 0.718 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Pleurisy, pneumothorax, pulmonary collapse | 0.834 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Other lower respiratory disease | 0.877 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Intestinal obstruction without hernia | 0.831 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Diverticulosis and diverticulitis | 0.903 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Biliary tract disease | 0.920 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Liver disease, alcohol-related | 0.728 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Other liver diseases | 0.843 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Gastrointestinal haemorrhage | 0.812 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Other gastrointestinal disorders | 0.943 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Acute and unspecified renal failure | 0.777 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Chronic renal failure | 0.881 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Urinary tract infections | 0.880 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Fracture of neck of femur (hip) | 0.782 | Yes | Yes | Yes | Yes | Yes | Yes | ||||
| Intracranial injury | 0.884 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Complication of device, implant or graft | 0.858 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |||
| Complications of surgical procedures or medical care | 0.873 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | ||
| Shock | 0.802 | Yes | Yes | Yes | Yes | Yes | |||||
| Average ROC curve | 0.845 | ||||||||||
| Overall ROC curve | 0.910 |
All models included an intercept term.
CCS, Clinical Classification System; LOS, length of stay; ROC, receiver operating characteristic.