Table 5.
AKI events identified by billing codes, serum creatinine, and combined creatinine and urine output criteria: in-hospital and 30-day mortality
| Variable | Billing Code AKI | AKIcr | AKIcr_uop |
|---|---|---|---|
| In-hospital mortality | |||
| AKI (%) | 41.2 | 18.7 | 12.8 |
| No AKI (%) | 3.9 | 2.6 | 2.1 |
| Odds ratio (95% CI) | 17.1 (10.0 to 29.1) | 8.6a (5.6 to 13.1) | 6.8a (4.3 to 10.7) |
| 30-day mortality | |||
| AKI (%) | 51.8 | 23.9 | 18.6 |
| No AKI (%) | 8.2 | 7.0 | 6.0 |
| Odds ratio (95% CI) | 12.1 (7.4 to 19.8) | 4.2a (3.0 to 5.9) | 3.6a (2.6 to 4.9) |
Electronic medical record sample. AKIcr, AKI by the creatinine-based criteria; AKIcr_uop, AKI by the creatinine- or urine output–based criteria; 95% CI, 95% confidence interval.
a
P<0.05 for comparison with coefficient for billing code AKI.