title: Test-retest reliability of a lifetime drug use questionnaire.
abstract: By adopting the investigational principle of the Lifetime Drinking History (LDH) interview, we developed a Lifetime Drug Use (LDU) Questionnaire to assess the amount and frequency of lifetime drug consumption. The Pearson Correlation Coefficients for test-retest reliability, investigated in a sample of N=47 residents of a drug rehabilitation center and averaged over the investigated seven drug categories, were r=.95 for the abstinence-corrected total duration of regular use, r=.89 for the mean number of consumption days per month of regular use, r=.89 for the mean daily amount, r=.83 for the variability in consumption days per month of regular use, and r=.75 for month variability in daily amount. Applicability and further research needs are discussed.
authors.affiliation: Institute of Pathophysiology, University of Graz, Heinrichstrasse 31a, Graz A-8010, Austria. christoph.czermak@aon.at
authors.forename: Christoph
authors.initials: C
authors.lastname: Czermak
authors.forename: Michael
authors.initials: M
authors.lastname: Lehofer
authors.forename: Peter
authors.initials: P
authors.lastname: Gasser-Steiner
authors.forename: Sandra
authors.initials: S
authors.lastname: Ettinger
authors.forename: Leonidas
authors.initials: L
authors.lastname: Lemonis
authors.forename: Alfred
authors.initials: A
authors.lastname: Rohrhofer
authors.forename: Thomas
authors.initials: T
authors.lastname: Legl
authors.forename: Peter M
authors.initials: PM
authors.lastname: Liebmann
mesh_terms: D000328:Adult; D000428:Alcohol Drinking / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics; D011619:Psychotropic Drugs; D015203:Reproducibility of Results; D012907:Smoking / Q000523:psychology; D019966:Substance-Related Disorders / Q000523:psychology*; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D011619:Psychotropic Drugs