Table 4. Multivariate analysis to determine the factors significantly associated with respiratory viral coinfections.

Factor	Odds ratio	95% confidence interval	P-value
Age < 24 months	8.967	3.075–26.151	<0.001
Underlying medical problems	1.216	0.224–6.592	0.821
Diagnosis of lower respiratory tract infection	1.788	0.551–5.805	0.334