Masquelier, BrunoKhlat, MyriamVan Cleemput, OcéaneOcéaneVan Cleemput2025-05-142025-05-142025-05-142018https://hdl.handle.net/2078.2/5887Using the 2017 ESCAPAD survey, a large national sample conducted among 17-year-olds in mainland France, this master thesis investigates whether the family background is a significant determinant of adolescent health behaviours in the French context and whether its effect varies with the psychoactive substance studied, with the frequency of consumption, or with certain socio-cultural characteristics. Logit models reveal that all non-traditional families faced relatively greater risks of both experimenting, regularly using or combining alcohol, tobacco and cannabis. Excess risks were higher in the cases of regular or multiple consumption and with tobacco and cannabis, both substances associated by adolescents with dangerous use, risk of addiction or self-medication against anxiety. Other socio-cultural characteristics such as the dominant language spoken at home and the educational situation appears to be major — though understudied — determinants of health. Interactions terms did not confirm that adolescents’ response to living in non-traditional households were significantly different with regard to drug use, regardless of gender, health or socio-cultural characteristics. We believe the inclusion of multiple substances and frequencies of use add a novel dimension to the study of drug involvement of adolescents from non-traditional families. Future research should help clarify the underlying processes leading to disparities in health-risk behaviours in adolescence.adolescencepsychoactive substancerisk behavioursfamily backgroundsingle-parent familiesdrug usetext::thesis::master thesisthesis:15113