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Mindstretcher: analysing observational studies.

Publication: Bandolier
Publication Date: 01-MAR-07
Format: Online
Delivery: Immediate Online Access

Article Excerpt
Haven't you always wanted to know what goes on in those statistical shenanigans found in so many observational studies, where raw results are "adjusted" for a whole range of criteria that may affect the results, from age and sex to inside leg measurement. No, it's not sad, but important. all...

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Usually this is opaque to us, and probably ever will be, but a study of the difference that different methods make, and related to results of randomised trials [1] and an accompanying editorial [2] at least provide an indication of the magnitude of the changes adjusting methods can make.

Study

The study was of 122,000 Medicare patients in the USA aged 65-84, admitted with acute myocardial infarction,...

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