Alcohol, cannabis, and nicotine use have distinct associations with COVID-19 pandemic-related experiences: An exploratory Bayesian network analysis across two timepoints

•Alcohol, cannabis, and nicotine use during the COVID-19 pandemic were measured.•Associations with COVID-19 pandemic-related experiences were modeled in a network.•Substances had distinct associations with pandemic impact domains.•Associations were stable in two assessments spanning 7 months.•The use of cross-sectional observational data is a key limitation.