Table 1.

Description of the children enrolled in the study. Data are expressed as n (%) or otherwise indicated

Descriptive variables	Overall, n = 69	Death, n = 11 (15.9)	Survival, n = 58 (84.1)
Age, dd median (IQR)	115 (56.5–265)	158 (67.5–467.5)	109 (53.7–258.5)
Weight, kg median (IQR)	5 (4–7.2)	6 (4.6–7.45)	4.95 (4–7)
Gender (F/M)	1.5 (42/27)	1.2 (6/5)	1.6 (36/22)
Study year
2014	18 (26.1)	3 (16.7)	15 (25.9)
2015	15 (21.7)	1 (6.7)	14 (24.1)
2016	25 (36.2)	5 (20)	20 (34.5)
2017	11 (15.9)	2 (18.2)	9 (15.5)
Comorbidity	27 (39.1)	10 (37.0)	17 (63.0)
Neurologic	6 (22.2)	1 (16.7)	5 (83.3)
Cardiac	11 (40.7)	5 (45.4)	6 (54.5)
Respiratory	6 (22.2)	3 (50.0)	3 (50.0)
Other	4 (14.8)	1 (25.0)	3 (75.0)
Preterm	17 (24.6)	2 (11.8)	15 (88.2)
Severe (<  30 w GA)	9 (52.9)	1 (11.1)	8 (88.9)
Moderate (30 < w GA < 35)	6 (35.3)	1 (16.7)	5 (83.3)
Late (35 < w GA < 38)	2 (11.8)	0	2
Origin
Other hospital	32 (46.4)	7 (21.9)	25 (78.1)
Ward	15 (21.7)	2 (13.3)	13 (86.7)
ER	10 (14.5)	2 (20.0)	8 (80.0)
Other origin	12 (17.4)	0	12 (100)
Aetiology
Medical	63 (91)	13 (20.6)	50 (79.4)
Surgical	4 (5.8)	0	4 (100)
Trauma	2 (2.9)	0	2 (100)
Underlying disease:
Intrapulmonary	53 (76.8)	7 (13.2)	46 (66.7)
Extrapulmunary	16 (23.2)	4 (25.0)	12 (75.0)
LOS, dd median (IQR)	19 (14–26)	21 (15–31)	17.5 (14–25.75)
Mechanical ventilation
Before PICU admission	25 (43.9)	5 (20.0)	20 (80.0)
On PICU admission	21 (36.8)	6 (28.6)	15 (71.4)
During PICU stay	11 (19.3)	0	11 (100)
Type of MV
ETI	26 (40.6)	7 (26.9)	19 (73.1)
ETI + NIV	38 (59.4)	5 (13.2)	33 (86.8)

dd days, IQR interquartile range, w GA weeks of gestational age, ER emergency room, LOS length of stay, ETI endotracheal intubation, NIV non invasive ventilation