. 2021 Sep 14;13(1):7–17. doi: 10.1055/s-0041-1735873

Table 2. Comparison of demographic characteristics of patients with bronchiolitis admitted to the PICU requiring and not requiring respiratory support escalation (RSE) and patients requiring and not requiring endotracheal intubation (ETI).

Variables	Patients did not require RSE	Patients required RSE	p -Value	Patients did not require ETI	Patients required ETI	p -Value
Number of patients	130	34		153	11
Demographics:
Age (months)	5.1 [2.2, 10.7] ^b	3.9 [2.0,11.0] ^b	0.64 ^c	5.1 [2.1,11.4] ^b	2.5 [1.7, 4.8] ^b	0.16 ^c
Gender (male/female)	85/45 (65/35) ^a	12/22 (35/65) ^a	0.001 ^b	94/59 (61/39) ^a	3/8 (27/73) ^a	0.026 ^b
Weight (kg),	7.2 [4.7, 8.7] ^b	6.4 [4.4, 8.5] ^b	0.44 ^c	7.2 [4.8, 8.7] ^b	5.8 [3.9, 6.9] ^b	0.089 ^c
Origin of patients			0.079 ^d			0.52 ^d
Emergency Department	85 (65) ^a	23 (68) ^a		99 (65) ^a	9 (82) ^a
Hospital floor	24 (18.5) ^a	1 (3) ^a		25 (16) ^a	0 (0) ^a
Outside hospital floor	19 (14.6) ^a	9 (26.5) ^a		26 (17) ^a	2 (18) ^a
Other	2 (1.5) ^a	1 (3) ^a		3 (2) ^a	0 (0) ^a
Day of illness at admission			0.69 ^c			0.72 ^c
1 d	8 (6) ^a	4 (12) ^a		10 (6.5) ^a	2 (18) ^a
2 d	21 (16) ^a	8 (23.5) ^a		27 (17.6) ^a	2 (18) ^a
3 d	32 (25) ^a	7 (21) ^a		36 (23.5) ^a	3 (27) ^a
4 d	20 (15) ^a	3 (9) ^a		23 (15) ^a	0 (0) ^a
5 d	16 (12) ^a	6 (18) ^a		20 (13) ^a	2 (18) ^a
6 d	9 (7) ^a	3 (9) ^a		11 (7) ^a	1 (9) ^a
7 d	11 (8.5) ^a	2 (6) ^a		12 (8) ^a	1 (9) ^a
> 7 d	10 (8) ^a	1 (3) ^a		11 (7) ^a	0 (0) ^a
Not known	3 (2) ^a	0 (0) ^a		3 (2) ^a	0 (0) ^a
Severity of illness:
PRISM score	0 [0,0] ^b	0 [0, 3] ^b	0.003 ^c	0 [0,0] ^b	0 [0, 6] ^b	0.018 ^c
PIM 2 score	−6.3 [−6.4, −6.1] ^b	−6.3 [−6.4, −6.1] ^b	0.55 ^c	−6.3 [−6.4, −6.1] ^b	−6.3 [−6.4, −6.2] ^b	0.39 ^c
PICU length of stay in days	1.5 [0.9, 2.6] ^b	3.7 [1.9, 10.2] ^b	<0.001 ^c	1.7 [0.96, 2.6] ^b	11.9 [8.9, 14.6] ^b	<0.001 ^c

Abbreviations: ETI, endotracheal intubation; PICU, pediatric intensive care unit; RSE, respiratory support escalation.

Number of patients (percentage).

Median [Interquartile range].

Kruskal-Wallis test.

Pearson's Chi-square test.