Cognitive behavioral therapy program for cannabis use cessation in first-episode psychosis patients: study protocol for a randomized controlled trial

Table 1 Classification of cannabis use for selection of participants

Severity of consumption	DSM-IV-TR^a criteria for abuse or dependence	Europ-ASI^b scores
Dependence	Meet at least minimal DSM-IV-TR criteria for cannabis dependence	8–9
Abuse	Meet ≥1 DSM-IV-TR criteria for cannabis abuse	4–7
Use	Meet DSM-IV-TR criteria for cannabis abuse but not the duration criterion (≥12 months) or ≥12 months of use but do not meet any DSM-IV-TR criteria for cannabis abuse	2–3
No use	No significant symptoms	0–1

^aRevised Fourth Edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) [37]
^bEuropean Addiction Severity Index (Europ-ASI) [37,38]

ISSN: 1745-6215