Table 2.

Cumulative incidence of serum creatinine and a healthcare visit during follow-up at 30-days, 90-days and 1-year in the overall cohort (primary endpoint), as well as in sensitivity analyses.

	Cumulative incidence (95% confidence interval) of both a serum creatinine and a healthcare visit
Group	30-days	90-days	1-year
Primary endpoint
Serum creatinine and healthcare visit (N = 627)	70% (66%, 73%)	82% (79%, 85%)	91% (89%, 93%)
Sensitivity analyses
Excluding individuals discharged to a SNF or acute care hospital (N = 438)	70% (65%, 74%)	82% (78%, 85%)	92% (89%, 94%)
Excluding individuals with an estimated baseline serum creatinine (N = 416)	72% (67%, 76%)	85% (81%, 88%)	93% (90%, 95%)
Maximum AKI severity
Stage II AKI (N = 400)	63% (57%, 67%)	77% (73%, 81%)	89% (85%, 92%)
Stage III AKI (N = 227)	82% (76%, 86%)	91% (86%, 94%)	95% (91%, 97%)
Degree of recovery by discharge
Stage 0 (N = 333)	65% (60%, 70%)	78% (73%, 82%)	89% (85%, 92%)
Stage 1 (N = 120)	72% (63%, 79%)	89% (81%, 93%)	95% (88%, 98%)
Stage 2 (N = 118)	71% (62%, 78%)	83% (74%, 89%)	91% (83%, 95%)
Stage 3 (N = 56)	87% (74%, 94%)	93% (81%, 97%)	96% (86%, 99%)
Baseline kidney disease
CKD (N = 379)	74% (69%, 78%)	87% (83%, 90%)	93% (90%, 95%)
No CKD (N = 248)	63% (56%, 69%)	75% (69%, 80%)	88% (83%, 92%)
Healthcare visit redefined to exclude non-nephrology specialty care (N = 627)	59% (54%, 63%)	73% (69%, 77%)	89% (85%, 92%)

AKI: Acute kidney injury; CKD: Chronic kidney disease; SNF: Skilled nursing facility