Tobacco use during cannabis cessation: Use patterns and impact on abstinence in a National Drug Abuse Treatment Clinical Trials Network study

•The impact of nicotine dependence on cannabis outcomes was examined.•Tobacco co-use was lower in this sample compared to national averages.•Those with lower nicotine dependence reduced their smoking during active treatment.•Nicotine dependence severity did not affect cannabis cessation outcomes.•Ni...

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