Table 3.

Relationship between urea reduction and survival in aki patients

	N	Events	Survival, (%)
10-day overall survival	651	123	81.1	0.78–0.84
10-day survival by urea reduction percent
>50%	87	5	94.3	0.89–0.99
26–50%	97	8	91.8	0.86–0.97
1–25%	137	18	86.9	0.81–0.92
0%	330	92	72.1	0.67–0.77
10-day survival by urea reduction percent with KRT or C
>50% KRT	33/87	1	96.9	0.91–1.00
>50% C	54/87	4	92.6	0.85–0.99
26–50% KRT	31/97	4	87.1	0.76–0.99
26–50% C	66/97	4	93.3	0.88–0.99
1–25% KRT	45/137	10	77.8	0.66–0.90
1–25% C	92/137	8	91.3	0.85–0.97
0% KRT	102/330	47	53.9	0.45–0.64
0% C	228/330	45	80.3	0.75–0.85
10-day survival by KRT modality or C
C	440	61	86.1	0.83–0.89
HD	182	53	70.9	0.64–0.77
Peritoneal dialysis	29	9	69.0	0.54–0.88

Log-rank test, p < 0.001.

C, conservative treatment; KRT, kidney replacement therapy.