Table 2.
Comparison of Incidence Estimates Between Preintervention and Postintervention Periods.
| Variable | Postintervention Period From January 1, 2015, to June 30, 2015 | Postintervention Period From January 1, 2016, to June 30, 2016 | Postintervention Period From January 1, 2017, to June 30, 2017 | |||
|---|---|---|---|---|---|---|
| RR (95% CI) | P Value* | RR (95% CI) | P Value† | RR (95% CI) | P Value‡ | |
| Episodes as per clinical documentation (ICD) data | ||||||
| Documentation of AKI | 1.86 (1.78-1.94) | <.001 | 2.46 (2.35-2.55) | <.001 | 2.39 (2.30-2.49) | <.001 |
| Documentation of ATN | 1.31 (1.19-1.43) | <.001 | 1.45 (1.33-1.59) | <.001 | 1.43 (1.31-1.56) | <.001 |
| Documentation of AKI and ATN combined | 1.73 (1.67-1.80) | <.001 | 2.24 (2.16-2.32) | <.001 | 2.19 (2.11-2.27) | <.001 |
| Episodes as per laboratory data | ||||||
| Laboratory episodes, AKI stage 1 | 0.93 (0.91-0.95) | <.001 | 0.97 (0.95-0.99) | .017 | 0.99 (0.97-1.02) | .6763 |
| Laboratory episodes, AKI stage 2 | 0.95 (0.89-1.0) | .0682 | 0.91 (0.86-0.96) | .0011 | 1.02 (0.97-1.08) | .4071 |
| Laboratory episodes, AKI stage 1 and 2 (early AKI) | 0.93 (0.91-0.95) | <.001 | 0.96 (0.94-0.98) | .0002 | 1.00 (0.98-1.02) | .9897 |
| Laboratory episodes, AKI stage 3 (late AKI) | 1.0 (0.9-1.11) | .9851 | 0.94 (0.84-1.04) | .216 | 0.838 (0.75-0.93) | .0012 |
| Laboratory episodes, AKI all stages | 0.94 (0.92-0.96) | <001 | 0.96 (0.94-0.98) | <.001 | 0.99 (0.97-1.02) | .4185 |
Abbreviations: AKI, acute kidney injury; ATN, acute tubular necrosis; CI, confidence interval; ICD, International Classification of Diseases; RR, risk ratio.
*Comparison between the postintervention period of 2015 with preintervention period of 2014.
†Comparison between the postintervention period of 2016 with preintervention period of 2014.
‡Comparison between the postintervention period of 2017 with preintervention period of 2014.