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 consumer preferences of Polish youth in the use of e-cigarettes.

Methods:
The cross-sectional study was carried out in 2020 on a sample of secondary school students aged 15–18 years (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] with different consumer preferences among e-cigarette users were the gender and size of the place of residence. Men more often than women declared that they knew the amounts of nicotine in the e-cigarettes they used [ln(BF)=15.94]. In the entire study population, it was the most common from 4 to 6 mg/mL of nicotine [In(BF)=2.35]. Men more often than women also declared that in their e-cigarettes they use liquids prepared on their own or at home [ln(BF)=46.51] and tastes other than sweet or tobacco and menthol [ln(BF)=2.99].

Conclusions:
Already in the group of young e-cigarette users in Poland, different consumer preferences for these products can be observed. Particular attention should be paid to the use of e-cigarettes by young people also for purposes other than their original use. It seems that, especially in the largest cities, it would be reasonable to implement educational and preventive measures in groups of young residents.