Table 4.

Final multivariable logistic regression model

Severity	Level	Odds ratio	95% CI	P value
Influenza strain	Influenza B	3.7	1.3, 10.9	.018
	Influenza A	1.00
Iron deficiency anaemia	Yes	4.8	1.4, 16.1	.011
	No	1.0
Food allergies	Yes	9.7	1.5, 61.4	.016
	No	1.0
Age category	<2 y	2.8	0.8, 9.1	.097
	≥2 y	1.0
Presence of AIH risk factor14	Yes	2.3	0.8, 6.6	.124
	No	1.0