Test-retest reliability of a lifetime drug use questionnaire.
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.
Czermak
Christoph
C
Institute of Pathophysiology, University of Graz, Heinrichstrasse 31a, Graz A-8010, Austria. christoph.czermak@aon.at
Lehofer
Michael
M
Gasser-Steiner
Peter
P
Ettinger
Sandra
S
Lemonis
Leonidas
L
Rohrhofer
Alfred
A
Legl
Thomas
T
Liebmann
Peter M
PM
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
D011619:Psychotropic Drugs