Table 1.

Demographic characteristics in children with or without myopia and odds ratios for myopia by the presence of specific allergic disease in multiple logistic regression models.

Variables	Non-myopia group N = 197,237		Myopia group N = 197,237			Adjusted ORa (95% CI)
	n	%	n	%	p-Value
Sex					> 0.99
Girls	98,517	49.9	98,517	49.9
Boys	98,720	50.1	98,720	50.1
Age, years (SD)b, a	8.71	(2.54)	8.73	(2.51)	0.07
Asthma					< 0.001
No	154,251	78.2	148,073	75.1		Ref
Yes	42,986	21.8	49,164	24.9		0.99 (0.98–1.01)
Atopic dermatitis					< 0.001
No	182,730	92.6	179,709	91.1		Ref
Yes	14,507	7.36	17,528	8.89		1.06 (1.04–1.09)⁎⁎⁎
Allergic rhinitis					< 0.001
No	127,333	64.6	110,529	56.0		Ref
Yes	69,904	35.4	86,708	44.0		1.32 (1.30–1.34)⁎⁎⁎
Allergic conjunctivitis					< 0.001
No	154,777	78.5	131,551	66.7		Ref
Yes	42,460	21.5	65,686	33.3		1.75 (1.72–1.77)⁎⁎⁎

Abbreviation: OR, odds ratio; CI, confidence interval; SD, standard deviation.

^aModel adjusted for sex, age (continuous), urbanization, parents' occupational status and allergic disease.

^bStudent's t-test.

^⁎⁎⁎p < 0.001.