| Variable | Mild (1 point) | Moderate (2 points) | Severe (3 points) |
| Memory loss | Past (30 days) | Recent past (7 days) | Recent (24 hours) |
| Confusion | Not confused | Mildly confused | Very confused |
| Sleep disturbance | Mild (changes in sleep pattern) | Moderate (fragmented sleep pattern) | Severe (less than 2 hours of sleep/night) |
| Comprehension | Well aware of surroundings | Impaired awareness of surroundings | Oblivious of surroundings |