Table 1.

Characteristics of the cohort

Variable	Admissions (n=19,113, %)	Mortality (n=588, %)
Demographic
<1 year old	1,784 (9.3)	65 (3.6)
1-4 years old	4,514 (23.6)	125 (2.8)
5-12 years old	4,927 (25.8)	177 (3.6)
13-18 years old	7,879 (41.2)	221 (2.8)
Female	9,659 (50.6)	282 (2.9)
Public insurance	11,094 (58.2)	346 (3.1)
Chronic disease*
Any chronic disease	12,804 (67.0)	553 (4.3)
Previously healthy	6,300 (33.0)	35 (0.6)
Bone marrow transplant	471 (2.5)	42 (8.9)
Hematologic malignancy	1,361 (7.1)	85 (6.3)
Other malignancy	1,084 (5.7)	71 (6.6)
Solid organ transplant	843 (4.4)	26 (3.1)
Neurologic disease	4,595 (24.0)	243 (5.3)
Congenital heart disease	2,729 (14.3)	211 (7.7)
Pulmonary disease	1,448 (7.6)	68 (4.7)
Dialysis dependent renal failure	656 (3.4)	96 (14.6)
Other renal disease	1,160 (6.1)	28 (2.4)
Short bowel syndrome	636 (3.3)	29 (4.6)
Other gastrointestinal disease	653 (6.7)	24 (3.7)
Congenital or acquired immunodeficiency	668 (3.5)	44 (6.6)
Other hemato/immunologic disease	2,044 (10.7)	114 (5.6)
Any device	6,025 (31.5)	252 (4.2)
Tracheostomy	2,514 (13.2)	76 (3.0)
G or GJ tube	4,520 (23.6)	149 (3.3)
Neurologic shunt	1,050 (5.5)	69 (6.6)
Ventricular assist device or pacemaker	631 (3.3)	40 (6.3)
Other device	488 (2.6)	21 (4.3)
All other chronic diseases	4,448 (23.3)	219 (4.9)
Acute organ failure
Mechanical ventilation	6,023 (31.5)	470 (7.8)
Shock	3,704 (19.4)	253 (6.8)
Acute kidney injury	2,718 (14.2)	162 (6.0)
Neurologic failure	1,616 (8.5)	76 (4.7)
Hepatic failure	222 (1.2)	54 (24.3)
Hematologic failure	3,550 (18.6)	185 (5.2)
APRDRG Illness Severity
Mild/moderate severity	4,545 (23.8)	8 (0.2)
Major severity	6,793 (35.6)	34 (0.5)
Extreme severity	7,730 (40.5)	545 (7.1)

^*Because patients could have more than one chronic disease, percentages add to more than 100%.