Table 2.

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, and personal smoking

	Any	Maternal	Paternal
Cough	n=411	n=402	n=359
Never	Reference	Reference	Reference
Incident	1.9 (1.03-3.31)*	1.8 (0.98-3.35)	1.3 (0.72-2.48)
Remittent	1.0 (0.53-1.81)	1.0 (0.47-1.99)	1.1 (0.57-2.05)
Persistent	5.4 (2.47-11.73)**	2.2 (1.13-4.38)*	3.3 (1.60-6.71)**
Chronic Cough	n=411	n=402	n=359
Never	Reference	Reference	Reference
Incident	2.7 (1.41-5.26)**	1.2 (0.65-2.36)	3.6 (1.80-7.37)**
Remittent	1.3 (0.65-2.58)	1.0 (0.47-2.28)	1.8 (0.87-3.63)
Persistent	3.4 (1.20-9.66)*	0.9 (0.35-2.51)	3.0 (1.13-7.96) *
Wheeze	n=412	n=403	n=360
Never	Reference	Reference	Reference
Incident	1.3 (0.69-2.36)	1.2 (0.62-2.26)	1.5 (0.76-2.86)
Remittent	1.0 (0.52-1.90)	1.2 (0.60-2.51)	1.1 (0.55-2.31)
Persistent	1.8 (1.07-3.03)*	0.9 (0.52-1.65)	2.3 (1.31-3.99)**

^*p<0.05,

^**p<0.01