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Table 5 Concurrent predictive validity of the CPQ-A-S and the CAST to predict presence of intensive cannabis use in past month (10 times or more), cannabis use in past week, cannabis dependence and cannabis abuse

From: Screening of cannabis-related problems among youth: the CPQ-A-S and CAST questionnaires

  B S.E. Wald df Sig. Odds ratio
Intensive cannabis use in past month (10 times or more)
CPQ-A-S 0.561 0.106 28.230 1 ≤ .001 1.753
CAST 0.273 0.056 23.929 1 ≤ .001 1.314
Cannabis use in past week
CPQ-A-S 0.422 0.096 19.276 1 ≤ .001 1.524
CAST 0.226 0.058 15.312 1 ≤ .001 1.253
Dependence DSM-IV
CPQ-A-S 0.829 0.134 38.290 1 ≤ .001 2.291
CAST 0.512 0.085 36.438 1 ≤ .001 1.668
Abuse DSM- IV
CPQ-A-S 0.472 0.094 25.286 1 ≤ .001 1.604
CAST 0.220 0.050 19.061 1 ≤ .001 1.246
  1. Logistic regressions and odds ratios.