Table 3: Total time in intensive care unit and total length of stay in hospital up to five years following primary cardiac surgery by lesion/age at surgery groups.

CHD lesion Group	Age at surgery*	n	Total time in ICU (hours) median [IQR]	90th centile time in ICU cut-off (days)	Total LOS in hospital (days) median [IQR]	90th centile total LOS in hospital cut-off (days)	Total time on mechanical ventilation (hours) median [IQR]
Lesion Group A	Neonatal	381	358 [223–592]	1020	33 [21–60]	90	120 [51–229]
	Infant	77	174 [113–314]	502	29 [18–45]	64	48 [0–140]
	Child	34	71 [47–124]	277	18 [9-29]	38	0 [0–52]
Lesion Group B	Neonatal	188	273 [173–461]	794	28 [19–40]	62	96 [28–178]
	Infant	350	91 [48–152]	291	11 [7–18]	30	34 [0–98]
	Child	186	26 [22–46]	72	6 [5–7]	11	0 [0–0]
Lesion Group C	Neonatal	38	326 [145–695]	1928	26 [21–43]	84	91 [30–146]
	Infant	323	51 [31–108]	168	8 [6–12]	21	23 [0–50]
	Child	296	24 [21–27]	47	5 [4–6]	9	0 [0–0]

*Neonatal surgery = ≤30 days old, infant surgery = 31 days-1 year, child surgery = 1–5 years.

ICU = intensive care unit, LOS = length of stay, IQR = inter-quartile range.