| Score | Decoding |
| < 5 | remission |
| 5 - 7 | mild activity |
| 8 - 16 | moderate activity |
| > 16 | severe activity |
To calculate the score you need to fill in all fields.
The fields 'Patient well-being', 'Abdominal pain' and 'Abdominal mass' are single-selection. For the field 'Number of liquid or soft stools' you must refer to the day before the visit; this field is blank, with the possibility of engtering a number from 1 to 25.
The field 'Complications' is the only one with the possibility of multiple selection; the calculator counts each type of complication selected.