Prevalence and likelihood ratios (LRs) for stroke at 2, 7, and 90 days after a transient ischaemic attack using the unified ABCD2 risk score*
| Risk group (score) | 2 day stroke | 7 day stroke | 90 day stroke | |||
|---|---|---|---|---|---|---|
| Prevalence | LR | Prevalence | LR | Prevalence | LR | |
| *LR defined in glossary and calculated from data in article. Results combined from 2 derivation and 4 validation cohorts. | ||||||
| Low (0–3) | 1.0% | 0.26 | 1.2% | 0.21 | 3.1% | 0.31 |
| Moderate (4–5) | 4.1% | 1.1 | 5.9% | 1.1 | 9.8% | 1.1 |
| High (6–7) | 8.1% | 2.2 | 12% | 2.3 | 18% | 2.1 |