Table 4. Univariate analysis between wheeze and eczema and covariates in three age groups.

		3 month group			18 month group			36 month group
		OR	95%CI	P	OR	95%CI	P	OR	95%CI	P
Gender
	Female	reference	―	―	reference	―	―	reference	―	―
	Male	1.62	1.41–1.86	<0.001	1.42	1.31–1.55	<0.001	1.35	1.23–1.47	<0.001
Birth season
	Spring (Mar. to May)	reference	―	―	reference	―	―	reference	―	―
	Summer (Jun. to Aug.)	1.11	0.90–1.37	0.334	0.98	0.87–1.10	0.703	0.99	0.87–1.12	0.851
	Autumn (Sep. to Nov.)	1.74	1.43–2.12	<0.001	1.08	0.97–1.22	0.173	1.15	1.02–1.30	0.024
	Winter (Dec. to Feb.)	1.45	1.19–1.78	<0.001	1.00	0.89–1.13	0.961	1.12	0.99–1.28	0.068
Birth order
	First	reference	―	―	reference	―	―	reference	―	―
	Second and after	1.07	0.93–1.22	0.356	1.05	0.96–1.14	0.292	1.00	0.92–1.09	0.946
Paternal allergic disease
	No	reference	―	―	reference	―	―	reference	―	―
	Yes	1.82	1.52–2.18	<0.001	2.08	1.86–2.32	<0.001	2.56	2.27–2.89	<0.001