Validity of the self-reported drug use section of the Addiction Severity Index and associated factors used under naturalistic conditions

Subst Use Misuse. 2012 Mar;47(4):356-63. doi: 10.3109/10826084.2011.640732. Epub 2012 Jan 4.


The study examined the validity of 1848 self-reported uses of drugs determined within an Addiction Severity Index interview in comparison with urinalysis results among drug-dependent subjects undergoing treatment in outpatient clinics (Aquitaine area, southwest France, 1994-2005). Agreement and kappa statistics were calculated for each substance. Factors associated with agreement were defined using a multivariate analysis. The conditional kappa coefficients were excellent for all substances assessed. The accuracy between self-reports and urinalysis results was influenced by factors that only slightly affected conditional kappa coefficients. Clients did not underreport their substance use in naturalistic clinical assessment conditions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Drug Users
  • Female
  • Humans
  • Illicit Drugs / urine
  • Male
  • Psychometrics / instrumentation
  • Reproducibility of Results
  • Self Report*
  • Severity of Illness Index
  • Substance Abuse Detection / methods*
  • Substance-Related Disorders / diagnosis*
  • Substance-Related Disorders / epidemiology*
  • Urinalysis


  • Illicit Drugs