can marijuana be an independent variable how to find the correlation between roi and cannabis use what is the independent variable for cannabis use does cannabis affect the roi how to use cannabis model in r can cannabis use affect the roi are correlations with roi variables independent can cannabis cause roi what model allows marijuana use as an independent variable what is the independent variable in mixed effect what is the role of correlation variables in the roi of cannabis are the dependent variables of cannabis used in mixed studies? which logistic regression model would be performed for cannabis use can marijuana consumption vary among mri groups what kind of regression adjustment is necessary for marijuana use which variable should be adjusted to the regression coefficient for a mixed effect model? can marijuana use affect roi variables which of the following independent variables is independent of marijuana? are grey matter roi independent or dependent how would i adjust for correlations