Table 3. Significant factors associated with severe rhinitis in adolescents with rhinitis in the past year, identified by logistic regression.

	Univariate OR (95%CI)	Multivariate n=321 LR=101.70
		ORa (95%CI)
Number of old siblings
One	1.96 (1.09–3.51)*	2.60 (1.05–6.45)*
Use of paracetamol
Once a month	3.49 (1.51–8.06)*	4.06 (1.38–11.95)*

n: number of subjects included in analysis; LR: likelihood ratio; OR: odds ratio; ORa: adjusted odds ratio; 95%CI: 95% confidence interval. *significant values (p<0.05).