. Author manuscript; available in PMC: 2022 Apr 1.

Published in final edited form as: Am Heart J. 2021 Jan 25;234:51–59. doi: 10.1016/j.ahj.2020.12.013

Table 2.

Comparison of CA AKI rates when NCDR model derived threshold was and was not exceeded.

Risk	CA AKI when Contrast<Model	CA AKI when Contrast>Model	Delta (%)	NNT	P value
7–10%	1,220/17,543 (7.0%)	3,059/34,388 (8.9%)	1.9	53	<.001
10–15%	1,071/10,645 (10.1%)	3,715/28,569 (13.0%)	2.9	34	<.001
>15%	1,231/6,997 (17.6%)	12,474/42,991 (29.0%)	11.4	9	<.001
Overall	3,522/35,185 (10.0%)	19,248/105,948 (18.2%)	8.2	12	<.001

Contrast Induced Acute Kidney Injury (CA AKI), Number needed to treat to prevent 1 CA AKI (NNT)