[Reliability and validity of the Spanish adaptation of the brief form of the Cocaine Craving Questionnaire-Now (CCQ-N-10)].
OBJECTIVE
To assess the metric properties of the abridged, 10-item version of the Cocaine Craving Questionnaire-Now (CCQ-N-10) in its Spanish adaptation.


METHODS
The sample consists of 63 people beginning treatment for cocaine-abuse (n=23) or dependence (n=40) disorders according to DSM-IV criteria. Participants completed an assessment battery that included the extended, 45-item version of the Cocaine Craving Questionnaire (CCQ-N-45) - in which the CCQ-N-10 is embedded -, the Cocaine Craving Scale (CCS), a Visual Analog Craving Scale (VAS), the Severity of Dependence Scale (SDS), and the Clinical Psychiatric Impression (CPI).


RESULTS
Cronbach's values for the CCQ-N-10, CCQ-N-45, SDS and CCS scales were 0.95, 0.88, 0.79 and 0.93, respectively, indicating that all instruments show high internal consistency. Test-retest reliability for the CCQ-N-10 was fair (Intraclass Correlation Coefficient=0.59; p<0.001). A factor analysis of the CCQ-N-10 (KMO=0.85) shows a one-factor structure explaining 68.6% of the variance, with factor loadings ranging from 0.64 to 0.92. Confirmatory factor analysis supports the unidimensionality of the scale (CF =0.91; SRMR=0.06). The CCQ-N-10 explains 86.6% of the variance accounted for by the CCQ-N extended version (CCQ-N-45) and shows convergent validity with related measures such as the CCS (r=0.64, p<0.001), VAS (r=0.65, p<0.001), SDS (r=0.53, p<0.001) and CPI (r=0.50, p<0.001). Persons fulfilling criteria for cocaine-dependence disorder, compared to those who present cocaine abuse, show higher CCQ-N-10 scores (F(1;60.6)=7.16, p=0.010).


CONCLUSIONS
The Spanish adaptation of the CCQ-N-10 shows metric adequacy, and can be considered as a suitable assessment instrument in relation to cocaineuse disorders.
Iraurgi Castillo
Ioseba
I
Módulo de Asistencia Psicosocial de Rekalde, Bizkaia. iraurgi@telefonica.net
Trujols Albet
Joan
J
Jiménez-Lerma
Juan Manuel
JM
Landabaso
Miguel
M
D000328:Adult; D019970:Cocaine-Related Disorders / Q000175:diagnosis* / Q000523:psychology*; D005260:Female; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D055815:Young Adult