PRIMARY STUDY
Annual incidence of cannabis-induced psychosis, other substance-induced psychoses and dually diagnosed schizophrenia and cannabis use disorder in Denmark from 1994 to 2016
Key Findings: The authors found an increase in cannabis-induced psychosis (from 2.8 per 100 000 person in 2006 to 6.1 per 100 000 person in 2016). The increase in cannabis-induced psychosis was associated with an increase in the level of THC in cannabis as well as an increase in use of cannabis.
Type of Study: Meta-analysis
Study Result: Negative
Research Location(s): Denmark
Year of Pub: 2021
Cannabinoids Studied: Tetrahydrocannabinol (THC)
Phytocannabinoid Source: Unspecified
Chemotype: Chemotype I
Citation: Hjorthøj C, et al. Annual incidence of cannabis-induced psychosis, other substance-induced psychoses and dually diagnosed schizophrenia and cannabis use disorder in Denmark from 1994 to 2016. Psychol Med. 2021; 51:617-622. doi: 10.1017/S0033291719003532
Authors: Hjorthøj C, Larsen MO, Starzer MSK, Nordentoft M
