Items and response categories of self-reported substance use, subdivided by substance (alcohol, tobacco, cannabis, illegal drugs).
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Note: Cronbach’s alpha alcohol items: baseline = 0.87, follow-up = 0.86, Cronbach’s alpha tobacco items: baseline = 0.92, follow-up = 0.93, Cronbach’s alpha cannabis items: baseline = 0.92, follow-up = 0.89, Cronbach’s alpha illegal drug items: baseline = 0.54, follow-up = 0.58. Cronbach’s alpha alcohol, tobacco and cannabis items: baseline = 0.69, follow-up = 0.62. (PDF)
创建时间：
2015-12-03
