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OLS Field Name OLS Field Data
Main Title Confounding and selection bias in case control studies
Author Little, Roderick J. A. ; Rosenbaum, Paul R.
Other Authors
Author Title of a Work
Rosenbaum, Paul R.
CORP Author Office of Radiation Programs, Washington, DC.
Publisher Division of Statistics and Applied Mathematics, Office of Radiation Programs, U.S. Environmental Protection Agency
Year Published 1981
Report Number EPA 520/8-81-004
Stock Number PB81-194110
OCLC Number 08225428
Subjects Biometry--Mathematical models
Additional Subjects Biometrics ; Epidemiology ; Research ; Design ; Methodology ; Populations ; Statistical analysis
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJED  EPA 520/8-81-004 OCSPP Chemical Library/Washington,DC 07/02/1999
NTIS  PB81-194110 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation v, 20 p. ; 28 cm.
Abstract In case-control studies, the role of adjustments for bias, and in particular the role of matching, has been extensively debated. However, the absence of a formal statement of the problem has led to disagreements, confusion, and occasionally to erroneous conclusions. This paper formulates precisely and answers the following questions. (1) When is it necessary to adjust for a variable Z. (2) Given that the data analysis will adjust for the variable Z, is matching on Z the most efficient method of selecting controls. In answering these questions, the authors draw a sharp distinction between bias caused by confounding in the population and bias caused by the method used to select the sample.
Notes "January 1981." "U.S. Environmental Protection Agency". "EPA 520/8-81-004." Includes bibliographical references.
Place Published Washington, D.C. :
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Radiation Programs. Division of Statistics and Applied Mathematics.
PUB Date Free Form 1981.
NTIS Prices PC A03/MF A01
BIB Level m
Cataloging Source OCLC/T
OCLC Time Stamp 19990623131646
Language eng
SUDOCS Number EP 6.2:B 47
Origin OCLC
OCLC Rec Leader 01096cam 2200289Ia 45010