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Subject Selection Bias in Alcoholics Volunteering for a Treatment Study
Author(s) -
Strohmetz David B.,
Alterman Arthur I.,
Walter Dan
Publication year - 1990
Publication title -
alcoholism: clinical and experimental research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.267
H-Index - 153
eISSN - 1530-0277
pISSN - 0145-6008
DOI - 10.1111/j.1530-0277.1990.tb01236.x
Subject(s) - selection (genetic algorithm) , subject (documents) , psychology , selection bias , alcoholics anonymous , social psychology , clinical psychology , computer science , statistics , artificial intelligence , mathematics , world wide web
Baseline differences in alcoholism problem severity were compared between alcoholics who did and did not volunteer to participate in a treatment effectiveness study. A positive relationship was found between self‐reports of alcohol‐related problems and the degree of research participation. Group differences were also revealed in the rate of treatment completion. Possible explanations and solutions for this volunteer bias are discussed.