Table 4.

Multivariate models showing correlation of the different lung ultrasound models at baseline with bronchiolitis severity.

Model	Variables in the Model		OR	95% CI		p Value
Univariate models	Positive ultrasound	Yes	4.370	1.770	10.785	0.001
		No	1
	Ultrasound result	Interstitial	1.607	0.355	7.276	0.538
		Consolidative	3.462	1.250	9.586	0.017
		Mixed	5.565	2.188	14.150	<0.001
		Normal	1
	Score		1.226	1.146	1.311	<0.001
	Score > 9	Yes	7.462	3.941	14.129	<0.001
		No	1
MULTIVARIATE ANALYSES USING DIFFERENT LUS MODELS Multivariate models	MULTIVARIATE MODELS BASED ON QUALITATIVE LUS (positive vs. negative) without or with other LUS variables (Early involvement of paravertebral lung fields and extension)
	Positive ultrasound	Yes	0.699	0.180	2.721	0.605
		No	1
	Early involvement of paravertebral lung fields	Yes	1.622	0.548	4.801	0.383
		No	1
	Number of fields involved		1.615	1.279	2.039	0.000
	MULTIVARIATE MODELS BASED ON QUALITATIVE LUS (type of lung disease) without or with other LUS variables (Early involvement of paravertebral lung fields and extension)
	Ultrasound result	Interstizial	0.470	0.078	2.846	0.411
		Consolidative	0.770	0.193	3.066	0.710
		Mixed	0.691	0.156	3.067	0.627
		Normal	1
	Early involvement of lung fields	Yes	1.711	0.569	5.144	0.339
		No	1
	Number of fields involved		1.594	1.239	2.050	<0.001
	MULTIVARIATE MODELS BASED ON QUANTITATIVE LUS (mean score) without or with other LUS variables (Early involvement of paravertebral lung fields and extension)
	Score		1.213	1.120	1.313	<0.001
	Early involvement of lung fields	Yes	1.241	0.515	2.992	0.630
		No	1
	MULTIVARIATE MODELS BASED ON QUANTITATIVE LUS (score > 9) without or with other LUS variables (Early involvement of paravertebral lung fields and extension)
	Score > 9	Yes	4.224	1.590	11.223	0.004
		No	1
	Early involvement of lung fields	Yes	1.043	0.397	2.739	0.932
		No	1
	Number of fields involved		1.220	0.928	1.604	0.155