Comparison of the different severity definitions when used on our training cohort
| Value | All patients n=127 | Survivors n=92 | Non-survivors n=35 | P value |
| Zar | n=69/127 (54.3%) | n=44/92 (47.8%) | n=25/35 (71.4%) | 0.018 |
| Louie | n=42/125 (33.6%) | n=25/90 (27.8%) | n=17/35 (48.6%) | 0.035 |
| ACG severe | n=23/61 (37.7%) | n=14/40 (n=35.0%) | n=9/21 (42.9%) | 0.587 |
| ACG severe and complicated | n=48/127 (37.8%) | n=31/92 (33.7%) | n=17/35 (48.6%) | 0.153 |
| ESCMID | 2 (0–4) n=127 | 2 (0–4) n=92 | 2 (0–4) n=35 | 0.051 |
| SHEA 2010 | n=10/123 (8.1%) | n=2/89 (2.2%) | n=8/34 (23.5%) | 0.001 |
| SHEA 2017 | n=61/83 (73.5%) | n=38/57 (66.7%) | n=23/26 (88.5%) | 0.059 |
| Our model—at least one prediction marker fulfilled | n=80/116 (69.0%) | n=49/82 (59.8%) | n=31/34 (91.2%) | 0.001 |
ACG, American College of Gastroenterology; ESCMID, European Society of Clinical Microbiology and Infectious Diseases; SHEA, Society for Healthcare Epidemiology of America.