Background:
The use of tobacco products is a significant public health problem, especially among adolescents and young adults.

Objective:
The aim of the study was to analyze the image of e-cigarette use among Polish youth.

Methods:
A cross-sectional study was carried out in 2020 on a sample of secondary school students aged 15–18 (n=16712), representative of the Polish population, using the CAWI method. In order to estimate the relationship between the independent variables and the outcome variables, the Bayesian multivariate logistic regression was used in the R program using the brms library.

Results:
It was observed that a very significant relationship [ln(BF)<2.3] in the perception of the harmfulness of e-cigarettes compared to regular cigarettes was shown mainly by the profile of the respondents (traditional cigarette users, e-cigarette users, dual users, non-smokers) [ln(BF)=384.05] and gender [ln(BF)=155.91]. E-cigarette users and dual users most often indicated e-cigarettes as much less harmful than traditional ones. Declaring the use of e-cigarettes in non-smoking areas is also very significantly related to the type of smoker [ln(BF)=17.22] and gender [ln(BF)=10.05]. In prohibited places, e-cigarettes are used more often by men and dual users than by e-cigarette users. The parents’ opinion about their use of tobacco products declared by the respondents is strongly related to the parents’ use of traditional cigarettes [ln(BF)=19.68] and e-cigarettes [ln(BF)=8.2]. Both parents who use traditional cigarettes and e-cigarettes approve the use of tobacco products by their children more often than non-smoking parents.

Conclusions:
It seems that educational activities among young people about the harmfulness of e-cigarette use are still insufficient. Moreover, it seems justified to strengthen educational activities towards parents. Parents who smoke and use e-cigarettes should be made aware that the use of tobacco products at an early age is a strong health risk factor for their children.