Table 3.

Association between early life environmental exposures and the development of early childhood onset asthma (2–6 years old)

	Frequency of exposure (%)		OR (95% CI)	Standard error	P-value
	Asthma onset < 6	Asthma onset ≥ 6
Serious chest illness	11	5	2.1 (1.3–3.5)	0.249	0.0020
Carpet exposure	71	64	1.4 (1.1–1.9)	0.147	0.0175
Brick house type	66	57	1.4 (1.1–1.9)	0.142	0.0139
Paternal smoking	43	56	0.6 (0.5–0.8)	0.133	0.0002
Direct exposure to paternal smoking	27	45	0.5 (0.3–0.7)	0.227	0.0008

OR, odds ratio; CI, confidence interval.