2021 – Sensitivity and Specificity of the CRAFFT to Identify Heavy Cannabis Use: Evidence From a Large Statewide Adolescent Sample Posted on 20212021 by nflowers@illinois.edu Lee, C.A., Smith, D.C., Lanker, A., & Clary, K.L. (2021). Sensitivity and specificity of the CRAFFT to identify heavy cannabis use: Evidence from a large statewide adolescent sample. Addictive Behaviors, 122.