Table E3a.

Relative risks and 95% CIs associated with the longitudinal patterns of respiratory symptoms by dichotomous (never, ever) ETS exposure type , adjusted for age, sex, total surveys in adulthood, parent education among never smokers

	Any	Maternal	Paternal
Cough	n=234	n=234	n=214
Never	Reference	Reference	Reference
Incident	1.5 (0.65-3.30)	1.4 (0.56-3.65)	1.0 (0.44-2.52)
Remittent	0.7 (0.35-1.47)	0.6 (0.24-1.45)	0.8 (0.39-1.78)
Persistent	4.4 (1.58-12.00)**	1.2 (0.42-3.16)	2.6 (1.01-6.53)*
Chronic Cough	n=234	n=234	n=214
Never	Reference	Reference	Reference
Incident	2.5 (0.83-7.71)	1.3 (0.36-4.82)	3.4 (1.05-10.96)*
Remittent	1.0 (0.44-2.12)	0.5 (0.18-1.54)	1.3 (0.56-2.88)
Persistent	2.5 (0.59-10.44)	0.4 (0.04-3.07)	2.4 (0.60-9.26)
Wheeze	n=234	n=234	n=214
Never	Reference	Reference	Reference
Incident	1.3 (0.49-3.23)	0.8 (0.23-2.68)	1.3 (0.45-3.59)
Remittent	1.3 (0.61-2.80)	1.4 (0.56-3.32)	1.9 (0.83-4.31)
Persistent	2.2 (1.13-4.10)*	1.0 (0.46-2.19)	2.4 (1.22-4.89)*

^*p<0.05,

^**p<0.01