Attrition Bias in a Cohort Study of Substance Abuse Onset and Prevention.

McAlister, Alfred; Gordon, Nancy P.

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Peer reviewed

ERIC Number: EJ348407

Record Type: CIJE

Publication Date: 1986

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Attrition Bias in a Cohort Study of Substance Abuse Onset and Prevention.

McAlister, Alfred; Gordon, Nancy P.

Evaluation Review, v10 n6 p853-59 Dec 1986

Self-generated codes to insure student anonymity were used in a study of substance use among 2500 adolescents. Matching rates for various cohorts as a proportion of total respondents at different survey periods were less than ideal. The effects of coding and other attrition factors on the tracking are discussed. (JAZ)

Descriptors: Attrition (Research Studies), Cohort Analysis, Confidentiality, Drug Use, Intermediate Grades, Junior High Schools, Matched Groups, Parent Role, Racial Differences, Smoking, Statistical Bias

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

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Author Affiliations: N/A