Table 4.
Poisson regression model for poor outcome
| Model | Beta | Relative risk | RR 95 % CI | P value | |
|---|---|---|---|---|---|
| Intercept | −2.401 | <0.001 | |||
| eAKI | No eAKI | Reference | |||
| Risk | 0.023 | 1.02 | 0.91, 1.15 | 0.691 | |
| Injury | 0.133 | 1.14 | 1.01, 1.29 | 0.034 | |
| Failure | 0.223 | 1.25 | 1.01, 1.55 | 0.042 | |
| Sex | Male | Reference | |||
| Female | 0.096 | 1.10 | 1.01, 1.2 | 0.030 | |
| Admission type | Elective surgical | Reference | |||
| Urgent surgical | 0.185 | 1.20 | 0.99, 1.45 | 0.057 | |
| Medical | 0.270 | 1.31 | 1.09, 1.57 | 0.004 | |
| Mechanical ventilation within 24 hours of ICU admission | No | Reference | |||
| Yes | 0.086 | 1.09 | 0.93, 1.28 | 0.300 | |
| Confirmed infection within 24 hours of ICU admission | No | Reference | |||
| Yes | 0.116 | 1.12 | 1.02, 1.24 | 0.017 | |
| Age (transformed) | 1.615 | 5.03 | 3.63, 6.96 | <0.001 | |
| Charlson Comorbidity Index | 0.050 | 1.05 | 1.03, 1.07 | <0.001 | |
| Pre-ICU hospital length of stay | 0.005 | 1.01 | 1.00, 1.01 | 0.050 | |
| Acute Physiology Score (transformed) | 0.324 | 1.38 | 1.26, 1.52 | <0.001 | |
Results were pooled from 35 imputation datasets, using Rubin’s rule. Age was transformed into ((age-16)/100)^2, Acute Physiology Score (APS) was transformed into ((APS-1)/10)^-1 + ((APS-1)/10). RR 95 % CI 95 % confidence interval of the relative risk, eAKI early acute kidney injury, ICU intensive care unit