Document Detail

Two procedures to reduce response bias in reports of alcohol consumption.
MedLine Citation:
PMID:  2359305     Owner:  NLM     Status:  MEDLINE    
Standard instructions concerning the extent of confidentiality and a retrospective diary procedure were examined for their effects on reports of alcohol consumption. A total of 156 individuals attending a health fair at a southern university participated in an alcohol survey. Subjects were randomly distributed an alcohol survey that presented a 7-day and a 28-day quantity-frequency (Q-F) measure and a retrospective diary measure. Subjects were also randomly distributed an informed consent sheet that stated that their responses would remain completely anonymous and confidential or one that stated that their responses would be kept completely confidential and asked them to identify significant others to verify their responses. A significantly greater proportion (p = .0003) of subjects receiving instructions of confidentiality with verification did not sign the consent form or did not identify at least one significant other. No differences were found across types of instructions on measures of alcohol consumption and willingness to report alcohol, cigarette and marijuana use. The retrospective diary resulted in significantly greater reports of the number of drinking days per week (p = .0004) and number of drinks per week (p = .02) than did 7-day and 28-day Q-F measures. The diary measure also classified a greater percentage of drinkers as heavy drinkers, whereas the 28-day Q-F measure classified a greater percentage of subjects as drinkers.
C E Werch
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of studies on alcohol     Volume:  51     ISSN:  0096-882X     ISO Abbreviation:  J. Stud. Alcohol     Publication Date:  1990 Jul 
Date Detail:
Created Date:  1990-08-02     Completed Date:  1990-08-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7503813     Medline TA:  J Stud Alcohol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  327-30     Citation Subset:  IM    
University of North Florida, College of Health, Jacksonville 32216.
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MeSH Terms
Alcohol Drinking*
Analysis of Variance
Chi-Square Distribution
Confidentiality / psychology*
Marijuana Smoking
Medical Records*
Observer Variation
Pilot Projects
Random Allocation

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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