|Titre :||The accuracy of self-reported data concerning recent cannabis use in the French armed forces (2013)|
|Auteurs :||A. MAYET ; M. ESVAN ; C. MARIMOUTOU ; R. HAUS-CHEYMOL ; C. VERRET ; L. OLLIVIER ; J. B. MEYNARD ; R. MICHEL ; J. P. BOUTIN ; X. DEPARIS ; R. MIGLIANI|
|Type de document :||Article : Périodique|
|Dans :||European Journal of Public Health (Vol.23, n°2, April 2013)|
|Article en page(s) :||328-332|
|Discipline :||EPI (Epidémiologie / Epidemiology)|
Thésaurus TOXIBASEARMEE ; CANNABIS ; AUTOEVALUATION ; FIABILITE ; ETUDE TRANSVERSALE ; DEPISTAGE ; TETRAHYDROCANNABINOL ; PREVALENCE ; TEST ; URINE
Background: The aims were to evaluate the accuracy of self-report of past-month cannabis use in a representative sample of French military staff members and to evaluate the scale of the prevarication bias.
Method: Data from three cross-sectional surveys conducted between 2005 and 2008 (n = 3493) were used. The characteristics of self-report (sensitivity, specificity, positive predictive value and negative predictive value) were computed using tetrahydrocannabinol detection in urine as the reference.
Results: The prevalence for past-month cannabis use was 16.1% and for positive testing was 13.4%. The discriminant power of self-report was good, with an area under the receiver operating characteristics curve 0.90. Specificity (94.5%) and negative predictive values (97.8%) were good, but sensitivity (85.7%) and positive predictive values (70.4%) were lower. The lowest sensitivity values were observed in the higher categories of personnel and in the Navy, which could reflect some prevarication in these sub-populations who might believe they were more exposed to sanctions if detected.
Conclusions: Despite certain limitations of urine analysis as a reference, because of its poor detection of occasional users, our study is in favour of good accuracy of self-reported data on cannabis use, even among the military. However, our results, derived from a population study, do not enable any assumptions on the validity of self-reported data collected during individual testing procedures for the purpose of improving occupational safety.
• Cannabis use among military constitutes an important public health issue.
• The objective was to compare self-report of recent cannabis use with urine analyses.
• We concluded to good accuracy of self-reported data on cannabis use among the military.
• A greater degree of prevarication was suspected among higher-ranking personnel.
|Domaine :||Drogues illicites / Illicit drugs|
|Refs biblio. :||22|
|Affiliation :||Centre d'épidémiologie et de santé publique des armées, Ministère de la défense / Service de santé des armées, Saint Mandé, France|