LACE index
| Attribute | Points if positive |
|---|---|
| Length of stay: | |
| Less than 1 day | 0 |
| 1 day | 1 |
| 2 days | 2 |
| 3 days | 3 |
| 4–6 days | 4 |
| 7–13 days | 5 |
| ≥14 days | 7 |
| Acute or emergent admission | 3 |
| Charlson comorbidity index score: | |
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| ≥4 | 5 |
| Visits to emergency department in previous 6 months: | |
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| ≥4 | 4 |