RT journal article T1 Knowledge, Attitudes and Behaviours of Adolescents and Young Adult Population on the Use of E-Cigarettes or Personal Vaporizer A1 Sánchez Sánchez, Eduardo A1 García Ferrer, Lucía A1 Sánchez Sánchez, Eduardo A1 García Ferrer, Lucía A1 Ramírez-Vargas, Guillermo A1 Díaz Jiménez, Jara A1 Rosety Rodríguez, Manuel A1 Díaz Ordóñez, Antonio Jesús A1 Ordóñez Muñoz, Francisco Javier A1 Rosety Rodríguez, Miguel Ángel A1 Rosety Rodríguez, Ignacio A1 Poza Méndez, Miriam A2 Anatomía y Embriología Humana K1 adolescent K1 adult K1 dangerous behaviour K1 e-cigarette vapor K1 personal vaporizer K1 vape K1 vaping AB The use of electronic cigarettes (e-cig) or personal vaporizers (PV) has increased in recent years, especially among adolescents and adults, increasing risk factors for their health or being a starting point for other risk behaviours. The aim of our study is to learn the knowledge, attitudes and behaviours of the adolescent and young adult population on the use of e-cigarettes or PVs. A cross-sectional descriptive study was carried out among 375 subjects. The use of e-cigs or PVs was measured using a self-administered questionnaire. Overall, 13.33% of the respondents used e-cigarettes or PVs. A correlation could be established between vape use and age, with 14-18-year-olds being the highest users (25.9%). Additionally, 90.13% of the respondents answered that e-cig or PV use was harmful to health. Other behaviours, such as consumption of energy drinks (ED), increases the probability of vaping by 3.08 times (CI = 1.55-6.29; p = 0.001). Subjects aged 23-26 years and 27-34 years are less likely to vape than subjects aged 14-18 years (OR = 0.31: CI = 0.09-0.96; p = 0.044; OR = 0.07: CI = 0.00-0.63; p = 0.037). The same applies to subjects with secondary education (OR = 0.17: CI = 0.04-0.66; p = 0.011) and postgraduate education (OR = 0.07: CI = 0.06-1.19; p = 0.043), than subjects with primary education. The use of e-cigs and PVs starts at an early age, despite the known harmful effects of e-cigs and PVs. Their use may occur mainly in recreational situations and in association with other substances such as ED. PB MDPI SN 2227-9032 YR 2023 FD 2023-01-29 LK http://hdl.handle.net/10498/30555 UL http://hdl.handle.net/10498/30555 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 08-nov-2026