Table 3.

—Ordinal Regression^a Models of the Association Between ETS at Different Time Points and Frequency of Respiratory Symptoms During the Previous 6 Mo

	IUS Exposure		ETS Exposure From Mother During Infancy (0-2 y)		Current ETS Exposure
Symptom	OR (95% CI)	P Value	OR (95% CI)	P Value	OR (95% CI)	P Value
Daytime cough/wheeze with exercise	2.3 (1.2-4.6)	.01	2.8 (1.5-5.1)	< .001	1.7 (1.0-2.8)	.03
Daytime cough/wheeze unrelated to exercise	1.0 (0.06-2.1)	.94	0.9 (0.5-1.7)	.67	1.1 (0.7-1.8)	.78
Nighttime cough/wheeze causing awakening	2.4 (1.2-4.8)	.01	1.3 (0.7-2.3)	.47	2.4 (1.4-4.1)	.002

See Table 1 and 2 legends for expansion of abbreviations.

^aORs > 1 indicate associations with higher symptom frequency, and ORs < 1 indicate associations with lower symptom frequency.