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Chunk #8 — Method — Measures — Cannabis use disorder (CUD)

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Age at first use and later substance use disorder: Shared genetic and environmental pathways for nicotine, alcohol, and cannabis.
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from 0 to 6 in men (M=1.09, SD=1.71) and women (M=0.70, SD=1.43) and the average number of symptoms in the sample was 0.88 (SD=1.58). The prevalence of individuals endorsing one or more symptoms was 38.1%, 25.5%, and 31.2% for men, women, and the sample, respectively. The symptom count exhibited good internal consistency (Cronbach’s α=0.84) and good test-retest reliability (r(118)=.82, p<.0001). It was minimally associated with birth year (r=−.02) and assessment year (r=−.05).