Source:http://linkedlifedata.com/resource/pubmed/id/17634107
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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
2007-8-29
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pubmed:abstractText |
Many studies conducted in health and social sciences collect individual level data as outcome measures. Usually, such data have a hierarchical structure, with patients clustered within physicians, and physicians clustered within practices. Large survey data, including national surveys, have a hierarchical or clustered structure; respondents are naturally clustered in geographical units (e.g., health regions) and may be grouped into smaller units. Outcomes of interest in many fields not only reflect continuous measures, but also binary outcomes such as depression, presence or absence of a disease, and self-reported general health. In the framework of multilevel studies an important problem is calculating an adequate sample size that generates unbiased and accurate estimates.
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pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/17634107-11778679,
http://linkedlifedata.com/resource/pubmed/commentcorrection/17634107-12505885,
http://linkedlifedata.com/resource/pubmed/commentcorrection/17634107-15015912,
http://linkedlifedata.com/resource/pubmed/commentcorrection/17634107-15796656,
http://linkedlifedata.com/resource/pubmed/commentcorrection/17634107-15928220
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:issn |
1471-2288
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pubmed:author | |
pubmed:issnType |
Electronic
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pubmed:volume |
7
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
34
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:17634107-Computer Simulation,
pubmed-meshheading:17634107-Humans,
pubmed-meshheading:17634107-Logistic Models,
pubmed-meshheading:17634107-Outcome Assessment (Health Care),
pubmed-meshheading:17634107-Prevalence,
pubmed-meshheading:17634107-Sample Size,
pubmed-meshheading:17634107-Sampling Studies,
pubmed-meshheading:17634107-Selection Bias
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pubmed:year |
2007
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pubmed:articleTitle |
A simulation study of sample size for multilevel logistic regression models.
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pubmed:affiliation |
Department of Public Health Sciences, University of Toronto, Toronto, Canada. rahim.moineddin@utoronto.ca
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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