Table 2.

Effect of past 30-day secondhand nicotine vape exposure on wheeze, bronchitic symptoms and shortness of breath; N=2090*

	Wheeze	Bronchitic symptoms	Shortness of breath
	OR (95% CI)	OR (95% CI)	OR (95% CI)
Model 1†	1.56 (1.12 to 2.17)	1.90 (1.48 to 2.44)	1.87 (1.33 to 2.63)
Model 2‡	1.21 (0.84 to 1.72)	1.40 (1.06 to 1.84)	1.53 (1.06 to 2.21)

*Model 1: OR and 95% CI is based on mixed-effect logistic regression with person-specific random intercept and adjustment (fixed effect) for wave, age, sex, race and parental education.

†Model 2: OR and 95% CI is based on mixed-effect logistic regression similar to model 1 with additional adjustment (fixed effect) for primary smoking or vaping of nicotine or cannabis, and secondhand smoking or cannabis smoking or vaping exposure.

‡The OR and 95% CI for wheeze, bronchitic symptoms and shortness of breath is based on mixed-effect logistic regression models.