Table 4. Odds ratio and 95% confidence intervals for the association between secondhand smoke exposure and rhinitis by sensitization status.

		Non sensitized adults				Sensitized adults
		N	Model 1	Model 2	Model 3	N	Model 1	Model 2	Model 3	p-Interaction*
Unexposed		432	1	1	1	346	1	1	1
SHS
	0.011–0.031	461	1.2	1.25	1.4	343	0.57	0.57	0.91
			(0.86;1.91)	(0.92;2.00)	(0.92;2.12)		(0.35;0.91)	(0.36;0.92)	(0.37;1.01)
	0.032–0.086	382	1.29	1.4	1.48	342	0.72	0.73	0.8
			(0.85;1.97)	(0.92;2.13)	(0.94;2.32)		(0.49;1.04)	(0.50;1.07)	(0.56;1.16)
	0.087–10	446	1.02	1.15	1.31	402	0.62	0.63	0.73
			(0.68;1.55)	(0.75;1.75)	(0.82;2.10)		(0.40–0.94)	(0.41;0.97)	(0.47;1.14)
p-trend			0.91	0.47	0.2		0.05	0.08	0.28	0.24

*P interaction base on model 3