منابع مشابه
BMJ George Davey Smith and Shah Ebrahim Data dredging , bias , or confounding
http://bmj.com/cgi/content/full/325/7378/1437 Updated information and services can be found at: These include: Data supplement http://bmj.com/cgi/content/full/325/7378/1437/DC1 "Figures" References http://bmj.com/cgi/content/full/325/7378/1437#otherarticles 26 online articles that cite this article can be accessed at: http://bmj.com/cgi/content/full/325/7378/1437#BIBL This article cites 11 arti...
متن کاملData Dredging
Suppose there is a given data set and there are a huge number of hypotheses [1] about this data set [2]. If the data is totally random, then say all the hypotheses are actually false. However, owing to the sheer number of hypotheses on a limited data set, it is possible to see some very highly correlated [3] data that are statistically significant [4]. In such cases, data dredging is said to ha...
متن کاملData Dredging
Suppose there is a given data set and there are a huge number of hypotheses [1] about this data set [2]. If the data is totally random, then say all the hypotheses are actually false. However, owing to the sheer number of hypotheses on a limited data set, it is possible to see some very highly correlated [3] data that are statistically significant [4]. In such cases, data dredging is said to ha...
متن کاملData Dredging
Suppose there is a given data set and there are a huge number of hypotheses [1] about this data set [2]. If the data is totally random, then say all the hypotheses are actually false. However, owing to the sheer number of hypotheses on a limited data set, it is possible to see some very highly correlated [3] data that are statistically significant [4]. In such cases, data dredging is said to ha...
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Gene expression profiles of clinical cohorts can be used to identify genes that are correlated with a clinical variable of interest such as patient outcome or response to a particular drug. However, expression measurements are susceptible to technical bias caused by variation in extraneous factors such as RNA quality and array hybridization conditions. If such technical bias is correlated with ...
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ژورنال
عنوان ژورنال: BMJ
سال: 2002
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.325.7378.1437