Effect of past 30-day secondhand nicotine vape exposure on wheeze, bronchitic symptoms and shortness of breath in sensitivity analyses restricted to participants with no past 30-day primary vaping or smoking of nicotine or cannabis§
| Wheeze | Bronchitic symptoms | Shortness of breath | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Sensitivity analysis 1* | 2.27 (0.74 to 6.95) | 3.10 (1.52 to 6.35) | 2.05 (1.01 to 4.19) |
| Sensitivity analysis 2† | 1.30 (0.90 to 1.87) | 1.39 (1.05 to 1.84) | 1.56 (1.08 to 2.26) |
| Sensitivity analysis 3‡ | 1.15 (0.74 to 1.80) | 1.63 (1.16 to 2.31) | 1.47 (0.93 to 2.32) |
*Sensitivity analysis 1: Analysis was restricted to participants without any reported primary vaping or smoking of nicotine or cannabis in the past 30 days (primary vaping or smoking) (n=1181).
†Sensitivity analysis 2: Participants were included if they participated in both wave 1 and wave 2 (n=1609), adjusted additionally for primary vaping or smoking.
‡Sensitivity analysis 3: Participants who reported no history of physician diagnosed asthma at wave 1 (n=1463), adjusted additionally for primary vaping or smoking.
§OR and 95% CI are based on mixed-effect logistic regression model with person-specific random intercept and adjustment (fixed effect) for wave, age, sex, race, parental education and secondhand smoking or cannabis (smoking or vaping secondhand cannabis) exposure.