TABLE 1.

Patient Characteristics (n = 1,478 Patients)

Male	842 (57.0)
Age at hospital admission, yr	0.6 (0.2–5.1)
Neonate (< 30 d)	327 (22.1)
Infant (30 d to 1 yr)	485 (32.8)
Child (1–18 yr)	568 (38.4)
Adult (> 18 yr)	98 (6.6)
Weight-for-age z-score at hospital admission	–0.9 (–2.1 to –0.2)
Any chromosomal anomaly, syndrome, or extracardiac anomaly	420 (28.4)
Airway anomaly	24 (1.6)
Hospitalization type
Surgical	1,357 (91.8)
Medical	121 (8.2)
STAT category (for surgical patients)
1	479 (35.3)
2	397 (29.3)
3	170 (12.5)
4	209 (15.4)
5	62 (4.6)
Not assigned	40 (2.9)
Reason for first cardiac ICU encounter (medical patients)
Preoperative cardiac surgery	14 (11.6)
Medical condition	70 (57.9)
Noncardiac postsurgery	11 (9.1)
Post–cardiac catheterization	26 (21.5)

STAT = Society of Thoracic Surgeons-European Association for Cardiothoracic Surgery.

Data is presented as n (%) or median (interquartile range) as appropriate.