Inequality and adolescent cannabis use: A qualitative comparative analysis of the link at national level

Aim: This article explores the link between income inequality and adolescent cannabis use at the national level, in the context of other relevant social conditions, in developed countries. Methods and data: Fuzzy set qualitative comparative analysis is applied to two data sets that contain information on the national prevalence of past year cannabis use among 15 and 16 year olds, taken from the ESPAD and HBSC surveys, with supplementary data from the MtF and ASSAD surveys for the USA and Australia (n?=?97 for the ESPAD and n?=?72 for the HBSC data set). The data sets also include data on national rates of income inequality (Gini coefficient), wealth (GDP per head), welfare support (average benefit replacement rates), urbanization and labour market conditions (youth unemployment). Findings: The combination of high inequality and high urbanization forms part of configurations that are consistent with being usually sufficient to cause high-adolescent cannabis use, alongside high GDP per head in the ESPAD data set, and low welfare support in the HBSC data set. Conclusion: Social conditions, and particularly the combination of income inequality and urbanization, should be considered when studying the causation of high levels of adolescent cannabis use at the national level in developed countries.