Table 2.

Secondary Outcomes of Interest

Endpoint and Definitions	Data Source
Mortality
7-day mortality	Hospital record
Inpatient mortality	Hospital record
30-day mortality	Social Security Death Master File
Dialysis
7-day dialysis	Order entry system
Inpatient dialysis	Order entry system
Discharge on dialysis	Social work records
Renal Failure
Progression to stage 2 AKI	Laboratory values
Progression to stage 3 AKI	Laboratory values
Hospitalization
Hospital-free days post AKI	Hospital record
ICU-free days post AKI	Hospital record
Readmission rate and Cost
30-day readmission rate	Hospital record
Cost of hospitalization	Billing records
Process
Contrast administration	Order entry system
Fluid administration	Order entry system
Aminoglycoside administration	Order entry system
NSAID administration	Order entry system
ACE-Inhibitor / ARB administration	Order entry system
Renal consult	Direct chart review
Urinalysis order	Order entry system
Renal ultrasound order	Order entry system
Subclavian catheter placement	Procedure codes
Provider Awareness
Chart documentation of AKI	Billing records, direct chart review