*2.3. Data Processing*

For this study, descriptive (frequency) analyses were carried out with the aim of describing and characterizing the general remembrance of traffic campaigns among the Dominican population. Moreover, Chi-square (χ2) analyses were performed in order to obtain possible statistical associations with sociodemographic variables. Subsequently, and after basic statistical parameters were tested and met, a binary logistic regression (i.e., *Logit*) model was designed, using the fact of having recalled at least a traffic safety campaign as a dependent and binomial variable, where 1 = Yes and 0 = No, using basic demographic variables whose coverage is common to the whole population. Statistical analyses were carried out using the ©IBM SPSS (Statistical Package for Social Sciences) version 26.0 (Armonk, NY, USA).

### *2.4. Ethics*

This type of study does not require ethical approval. No personal data were used, and the participation was anonymous, implying no potential risks for the integrity of our participants. However, the "Ethics Committee of Research in Social Sciences in Health" from the University Institute on Traffic and Road Safety of the University of Valencia (Spain) was consulted, certifying that the research responds to the general ethical principles relevant to research in Social Sciences. The Committee expressed its approval for the research. All participants gave their consent before taking part in the study and after receiving an explanation of its objectives, as well as all the previously mentioned considerations, from the research staff.
