Document Detail

Reporting and selection bias in case-control studies of congenital malformations.
MedLine Citation:
PMID:  1637899     Owner:  NLM     Status:  MEDLINE    
Retrospective studies of congenital malformations frequently rely on exposures reported by study subjects. Differential error in exposure reporting by cases and controls, which has alternatively been referred to as "recall bias" and "reporting bias," may result in a biased effect measure. Some authors have attempted to avoid reporting bias by comparing exposures between two malformed groups, rather than between cases and nonmalformed controls. This approach, however, may introduce its own bias, which we call selection bias. Both reporting bias and selection bias are shown to be algebraically equivalent to bias arising from exposure misclassification. The magnitudes of these biases are compared for a range of plausible parametric values. The case-control design is sensitive to both differential reporting and selection bias, and the choice of study design involves balancing these two sources of bias.
S H Swan; G M Shaw; J Schulman
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Epidemiology (Cambridge, Mass.)     Volume:  3     ISSN:  1044-3983     ISO Abbreviation:  Epidemiology     Publication Date:  1992 Jul 
Date Detail:
Created Date:  1992-08-31     Completed Date:  1992-08-31     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9009644     Medline TA:  Epidemiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  356-63     Citation Subset:  IM    
Epidemiological Studies Section, California Department of Health Services, Berkeley 94704.
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MeSH Terms
Case-Control Studies
Congenital Abnormalities / classification,  epidemiology*
Selection Bias*
Comment In:
Epidemiology. 1993 Mar;4(2):182-4   [PMID:  8452908 ]

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