Suggested risk stratification cutoffs and observed and estimated event rates
| AKI risk score | ||||
| Risk level | Total score | Observed total AKI (%) | Estimated 3-day AKI (%) | Estimated 30-day AKI (%) |
| Low risk | 0–1 | 5.2 | 1.7 | 5.4 |
| Moderate risk | 2–3 | 18.4 | 6.2 | 19.7 |
| High risk | 4–6 | 54.7 | 21.6 | 59.7 |
| Death risk score | ||||
| Risk level | Total score | Observed total death (%) | Estimated 30-day death (%) | Estimated 60-day death (%) |
| Low risk | 0–3 | 1.7 | 1.6 | 2.0 |
| Moderate risk | 4 | 10.4 | 10.2 | 12.3 |
| High risk | 5–7 | 37.9 | 37.3 | 43.4 |
Observed percentages are from the observed data.
Estimated percentages are from Kaplan-Meier event curves.
AKI, acute kidney injury.