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Demographic, clinical and substance use characteristics of subjects
N/A missing values
*22 of the 38 subjects that participated in W1 and W3, reported lifetime use of tobacco in W1 but denied use in W3; 10 of the 52 subjects that participated in both W1 and W3 reported lifetime marijuana use in W1 but denied use in W3
**Includes vaping/e-cigarette use
