. Author manuscript; available in PMC: 2018 Jul 1.

Published in final edited form as: Pediatr Crit Care Med. 2017 Jul;18(7):638–646. doi: 10.1097/PCC.0000000000001185

TABLE 5.

Outcomes in patients with and without cardiac surgery-associated acute kidney injury stratified by site

Outcome	University of Michigan			Boston Children’s Hospital
Outcome	No CS-AKI (n = 111)	CS-AKI (n = 216)	P value^*	No CS-AKI (n = 399)	CS-AKI (n = 73)	P value^*
Duration of mechanical ventilation, days	2 (1–4)	4 (3–7)	<.001	2 (1–4)	6 (3–14)	<.001
Length of cardiac ICU stay, days	3 (1.8–5.7)	5 (3–8)	<.001	3 (2–6)	8 (5–20)	<.001
Length of hospital stay, days	8 (5–14)	12 (8–19)	<.001	7 (5–11)	15 (9–30)	<.001

Values are median (interquartile range). CS-AKI, cardiac surgery-associated acute kidney injury; ICU, intensive care unit.

P values for the comparison between groups were determined by proportional hazards regression.