Bias resulting from missing information: some epidemiological findings.
نویسندگان
چکیده
منابع مشابه
Bias resulting from missing information: some epidemiological findings.
The biases resulting from missing information were examined in three psychiatric epidemiological studies. In each study, cases with missing information could be compared with the main sample because data were available from several sources or at several points in time through a longitudinal study. In almost all instances, cases with missing data differed systematically in terms of variables cru...
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ژورنال
عنوان ژورنال: Journal of Epidemiology & Community Health
سال: 1977
ISSN: 0143-005X
DOI: 10.1136/jech.31.2.131