| Digestive signs | Staff | Percentage |
| Vomiting | 55 | 72.4 |
| Anorexia | 39 | 51.3 |
| Epigastralgia | 37 | 48.7 |
| Nausea | 19 | 25 |
| Diarrhoea | 13 | 17.1 |
| Constipation | 8 | 10.5 |
| Hiccup | 7 | 9.2 |
| Meteorism | 5 | 6.6 |
| Haematodesis | 4 | 5.3 |
| Ascite | 4 | 5.3 |
| Méléna | 4 | 5.3 |
| Gingivorrhagia | 1 | 1.3 |