Table 1.

Participating ICU characteristics

Site characteristics	Early adopter (n=5)	Late adopter† (n=8)	p-value
Site type n (%)	PICU 2 (40%) CICU 1 (20%) Mixed 2 (40%)	PICU 1 (12%) CICU 0 (0%) Mixed 7 (88%)	0.16
Total number of ICU beds (median, IQR)	20 (20–40)	18.5 (15–24)	0.24
Total ICU admissions per year (median, IQR)	900 (825–2,500)	1,125 (935–1,450)	0.43
Pediatric Residency (n, %)	Present (4, 80%)	Present (8, 100%)	0.39
Pediatric Critical Care Fellowship (n, %)	Present (4, 80%)	Present (5, 63%)	1.00
In-house attending call system (n, %)	In-house (5, 100%)	In-house (5, 63%)	0.23
Duration (days) to achieve compliance‡ (median, IQR)	153 (146–267)	783 (773–845)	0.009

^†Late adopter includes both ICUs meeting the bundle compliance criteria after 502 days (n=5) or not yet meeting criteria (n=3).

CICU=cardiac intensive care unit (pediatric); IQR=interquartile range; Mixed=unit has both PICU and CICU patients; PICU=pediatric intensive care unit.

^‡Calculated for the 5 late adopter sites that met compliance criteria by end of study period.

P-values were calculated with Fisher’s exact test for categorical values and Wilcoxon rank sum test for numeric values.