Table 6.

The ORs and 95% CI of risk factors associated with AR

	OR	95% CI		p value
		lower	upper
Gender, male	1.608	1.426	1.814	<0.001
City
Wuhan	1
Huangshi	0.719	0.581	0.890	0.002
Xiangyang	0.305	0.233	0.399	<0.001
Jingmen	0.699	0.544	0.899	0.005
Tianmen	0.330	0.226	0.483	<0.001
Family history	4.732	4.192	5.341	<0.001
Food allergy	1.899	1.597	2.258	<0.001
Drug allergy	1.265	1.038	1.542	0.020
Air purifier	1.394	1.223	1.589	<0.001
Exposure to dust	2.294	1.932	2.723	<0.001
Residence before 2 years old
Rural area	1
Town	2.047	1.583	2.648	<0.001
Urban area	2.196	1.702	2.832	<0.001
Daily outdoor time
<1 h	1
1–2 h	0.848	0.743	0.968	0.015
>2 h	0.864	0.712	1.049	0.140
Daily sleeping time
<8 h	1
8–9 h	0.752	0.603	0.939	0.012
>9 h	0.736	0.558	0.970	0.029
Maternal age
≤25	1
26–35	1.208	1.040	1.403	0.013
≥36	1.217	0.910	1.628	0.185
Siblings	0.878	0.776	0.994	0.040
Breastfeeding (for >6 months)	0.767	0.678	0.868	<0.001
Antibiotics given in the first year of life	1.632	1.196	2.226	0.002
Usage of antibiotics during the past 5 years, times/year
<1	1
1–2	1.757	1.510	2.046	<0.001
3–4	2.568	2.110	3.125	<0.001
5–6	3.397	2.497	4.622	<0.001
>7	2.501	1.583	3.953	<0.001

AR, allergic rhinitis.