Table 3. Subgroup analysis of adjusted odd ratios of allergic rhinitis, atopic dermatitis, and asthma history for school performance according to the economic level.

Economic Level		Allergic Rhinitis			Atopic Dermatitis			Asthma
		AOR	95% CI	P-value	AOR	95% CI	P-value	AOR	95% CI	P-value
Highest				<0.001*			0.714			<0.001*
	Performance, A	1.29	1.09–1.52		0.95	0.74–1.21		0.44	0.32–0.61
	Performance, B	1.27	1.07–1.51		0.88	0.68–1.13		0.57	0.41–0.79
	Performance, C	1.11	0.92–1.33		0.92	0.69–1.22		0.51	0.36–0.74
	Performance, D	1.00	0.83–1.20		1.00	0.75–1.34		0.58	0.38–0.87
	Performance, E	1.00			1.00			1.00
Middle, high				<0.001*			0.096			0.009*
	Performance, A	1.45	1.31–1.61		0.86	0.73–1.02		0.74	0.57–0.98
	Performance, B	1.28	1.16–1.40		0.87	0.75–1.01		0.83	0.65–1.06
	Performance, C	1.13	1.02–1.24		0.83	0.72–0.97		0.85	0.67–1.10
	Performance, D	1.03	0.93–1.14		0.94	0.80–1.10		1.05	0.82–1.34
	Performance, E	1.00			1.00			1.00
Middle				<0.001*			0.352			0.174
	Performance, A	1.52	1.42–1.63		0.96	0.86–1.07		0.81	0.66–0.98
	Performance, B	1.34	1.26–1.42		0.98	0.90–1.07		0.94	0.81–1.10
	Performance, C	1.18	1.11–1.25		0.95	0.88–1.03		0.90	0.79–1.04
	Performance, D	1.09	1.02–1.15		1.01	0.93–1.10		0.97	0.84–1.11
	Performance, E	1.00			1.00			1.00
Middle, low				<0.001*			0.102			0.190
	Performance, A	1.62	1.44–1.81		0.88	0.74–1.04		0.88	0.66–1.16
	Performance, B	1.26	1.16–1.38		0.85	0.75–0.97		1.05	0.84–1.31
	Performance, C	1.18	1.09–1.28		0.89	0.79–1.00		0.82	0.66–1.02
	Performance, D	1.15	1.06–1.24		0.94	0.84–1.04		0.96	0.79–1.17
	Performance, E	1.00			1.00			1.00
Lowest				<0.001*			0.442			0.314
	Performance, A	1.44	1.18–1.76		0.89	0.65–1.20		0.88	0.57–1.36
	Performance, B	1.52	1.30–1.80		1.16	0.93–1.44		0.89	0.63–1.26
	Performance, C	1.20	1.03–1.40		1.08	0.89–1.33		0.68	0.48–0.97
	Performance, D	1.11	0.98–1.25		1.03	0.88–1.21		0.87	0.68–1.12
	Performance, E	1.00			1.00			1.00

* Adjusted for age, sex, obesity, region of residence, economic level, educational level of father, educational level of mother, stress level, sleep time, day of physical activity, smoking, alcohol consumption, allergic rhinitis, asthma, and atopic dermatitis history