title: Psychometric properties of the Spanish version of the Cannabis Use Problems Identification Test among Chilean university students: A validation study.
abstract: In Chile, concerns mount about escalating cannabis use. Thus, it is important to have tools for early identification of at-risk users. The Cannabis Use Problems Identification Test (CUPIT) is a useful screening tool, and the aim of this study was to examine the psychometric properties of its Spanish version among Chilean university students.
  
  
  
  The CUPIT was translated into Spanish, pre-tested in a focus group (n=8), and then tested through an online survey (n=3798, 28% response rate). Of the 1061 respondents, 578 reported 12-month cannabis use. Internal reliability, internal structure, and concurrent validity (using the Cannabis Abuse Screening Test [CAST]) were obtained. Test-retest reliability was calculated (n=150) at 3-4 weeks (30% of attrition rate). Discriminative validity was evaluated comparing CUPIT subscales and four DSM-IV diagnostic groups. Receiving operator characteristic (ROC) curve analysis assessed sensitivity and specificity.
  
  
  
  Test-retest Pearson correlation between total CUPIT scores of 0.90 (p<0.001), and highly significant Kendall Tau-b coefficients for individual items (p<0.001) indicated excellent reliability. Concordance between the CUPIT and CAST (Pearson correlation 0.73, p<0.001) indicated good concurrent validity. ANOVA revealed significant differences in CUPIT scores between the four DSM-IV diagnostic groups (p<0.001), indicative of good discriminative validity. ROC analysis (gold standard: DSM-IV abuse/dependence) yielded an AUC value of 0.72, indicating acceptable discriminative capability.
  
  
  
  The Spanish CUPIT is reliable, valid, and accepted by the university population studied, and, thus, a potentially useful tool for identifying both problematic and at-risk users.
authors.affiliation: Prevention program in student's drug and alcohol use, Students' Health Center, Pontificia Universidad Católica de Chile, Chile. Electronic address: vacantil@uc.cl.
authors.forename: Vanessa
authors.initials: V
authors.lastname: Cantillano
authors.affiliation: Sociology Institute, Pontificia Universidad Católica de Chile, Chile.
authors.forename: Paloma
authors.initials: P
authors.lastname: Del Villar
authors.affiliation: Prevention program in student's drug and alcohol use, Students' Health Center, Pontificia Universidad Católica de Chile, Chile.
authors.forename: Lorena
authors.initials: L
authors.lastname: Contreras
authors.affiliation: Prevention program in student's drug and alcohol use, Students' Health Center, Pontificia Universidad Católica de Chile, Chile.
authors.forename: Daniel
authors.initials: D
authors.lastname: Martínez
authors.affiliation: Pontificia Universidad Católica de Chile, Chile.
authors.forename: M Soledad
authors.initials: MS
authors.lastname: Zuzulich
authors.affiliation: Prevention program in student's drug and alcohol use, Students' Health Center, Pontificia Universidad Católica de Chile, Chile.
authors.forename: Claudia
authors.initials: C
authors.lastname: Ramírez
authors.affiliation: Prevention program in student's drug and alcohol use, Students' Health Center, Pontificia Universidad Católica de Chile, Chile.
authors.forename: Carmiña
authors.initials: C
authors.lastname: Pons
authors.affiliation: School of Psychology, Massey University, Palmerston North, New Zealand.
authors.forename: Jan
authors.initials: J
authors.lastname: Bashford
mesh_terms: D000293:Adolescent; D002677:Chile; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008297:Male; D002189:Marijuana Abuse / Q000175:diagnosis* / Q000523:psychology; D008385:Marijuana Smoking / Q000523:psychology*; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013334:Students; D055815:Young Adult
keywords: Cannabis; Psychometric; Screening; Spanish; Students; University