Prevalence of psychoactive substance use and changes in consumption during the COVID-19 Pandemic in people with substance use disorders: systematic review and meta-analysis v1

The COVID-19 pandemic has affected the population's mental health in several ways. People with more vulnerable conditions may have been more affected, such as those with substance use disorder (SUD). We intend to carry out a systematic review and meta-analysis of studies with data on the prevalence of psychoactive substance use (PAS) and changes in consumption during the pandemic in individuals with SUD undergoing treatment. Therefore, this is a systematic review of the literature with a search in the LILACS, PubMed, PsycINFO, SciELO and VHL databases. The search will include studies published between March 2020 and July 2022 without language restrictions. Substance use prevalence data will be combined with random effects meta-analyses.