Table 4.

Thirty-day risk of all-cause mortality and other adverse outcomes in the discharge subpopulation

VariableEvents, n/N (%)Relative Riska (95% Confidence Interval)P Value
Patients Discharged from the ED
AKINo AKI
All-cause mortality136/6188 (2)87/6188 (1)1.6 (1.2 to 2.0)0.001
Pre-ED CKD stage, eGFR in ml/min per 1.73 m2b
 ≥6067/3904 (2)47/3904 (1)1.4 (1.0 to 2.1)0.57c
 45 to <6034/1054 (3)16/1054 (2)2.1 (1.2 to 3.8)
 30 to <4516/803 (2)13/803 (2)1.2 (0.6 to 2.6)
 <30d19/427 (4)11/427 (3)1.7 (0.8 to 3.6)
Receipt of hospital-based acute dialysis19/6188 (0.3)7/6188 (0.1)2.7 (1.2 to 6.0)0.01
  • ED, emergency department.

  • a Patients discharged home from the ED with no AKI served as the referent group.

  • b Derived from pre-ED serum creatinine measurements 7–365 days before the ED visit and is reported in ml/min per 1.73 m2.

  • c P value for interaction.

  • d Patients with an eGFR of 15 to <30 ml/min per 1.73 m2 and those with <15 ml/min per 1.73 m2 (not on dialysis) were combined because of a low number of events.