Table 3.

Crude trends in in-hospital and 2-year mortality among US veterans with and without AKI, 2013–2017

Patient Group	2013		2014		2015		2016		2017
	N at Risk	Rate	N at Risk	Rate	N at Risk	Rate	N at Risk	Rate	N at Risk	Rate
In-hospital mortality
All hospitalized patients	293,974	1.8	306,633	1.7	304,526	1.7	300,969	1.6	295,807	1.5
AKI serum creatinine	60,651	5.8	62,540	5.5	63,492	5.4	62,358	5.0	60,610	4.9
AKI diagnosis code	36,822	5.8	41,349	5.2	43,222	5.1	45,101	4.6	46,718	4.5
Non-AKI	23,323	0.8	244,093	0.7	241,034	0.7	238,611	0.7	235,197	0.6
AKI KDIGO stage
Stage 1	49,927	4.4	51,580	4.0	52,466	3.9	51,543	3.7	49,894	3.6
Stage 2	229	10.6	2091	12.3	2049	11.8	2011	11.1	1925	11.2
Stage 3	6080	11.7	6216	11.3	6427	12.0	6236	10.2	6089	10.0
AKI-D	2415	16.2	2653	15.3	2550	14.6	2668	14.9	2702	14.2
AKI and eGFR≥60 ml/min per 1.73 m2	33,084	6.1	33,750	5.7	33,980	5.7	33,076	5.4	31,072	5.3
AKI and eGFR <60 ml/min per 1.73 m2	27,567	5.5	28,790	5.1	29,512	5.2	29,282	4.6	29,538	4.6
1-yr mortality
All hospitalized patients	293,974	16.6	306,633	16.7	304,526	16.4	300,969	16.5	295,807	16.4
AKI	60,651	26.6	62,540	26.9	63,492	26.2	62,358	26.5	60,610	27.7
AKI diagnosis code	36,822	27.6	41,349	27.6	43,222	26.9	45,101	26.6	46,718	30.7
Non-AKI	23,323	14.1	244,093	14.0	241,034	13.8	238,611	13.9	235,197	13.5
AKI KDIGO stage
Stage 1	49,927	24.7	51,580	24.7	52,466	24.4	51,543	24.7	49,894	25.3
Stage 2	229	30.8	2091	33.1	2049	31.4	2011	30.1	1925	36.1
Stage 3	6080	35.0	6216	36.9	6427	33.8	6236	35.2	6089	37.9
AKI-D	2415	40.2	2653	40.7	2550	39.3	2668	38.7	2702	40.8
AKI and eGFR≥60 ml/min per 1.73 m2	33,084	24.2	33,750	23.7	33,980	23.7	33,076	23.5	31,072	23.5
AKI and eGFR<60 ml/min per 1.73 m2	27,567	29.6	28,790	30	29,512	30.5	29,282	29.3	29,538	29.7

eGFR refers to baseline preadmission eGFR. KDIGO, Kidney Disease Improving Global Outcomes; AKI-D, dialysis-requiring AKI.