Risk factors for cannabis use disorders and cannabis psychosis in Japan: Second report of a survey on cannabis‐related health problems among community cannabis users using social networking services

Abstract Aim To determine the risk factors for cannabis use disorders and cannabis psychosis in Japan based on a 2021 online survey among Japanese users of social network services. Methods The 3142 respondents who had used cannabis within the preceding year were categorized into two groups based on the development of cannabis use disorder and/or cannabis psychosis. Analyses were performed to determine these conditions' risk factors. Results Multivariate analysis revealed that factors significantly associated with cannabis use disorders were “cannabis‐use initiation at a young age” (p = 0.004, OR: 0.951, 95% CI [0.920–0.984]), “family history of mental health problems” (p