Meta-analysis, funnel plots and sensitivity analysis
چهارشنبه , 20 شهریور 1392 ساعت 01:07 دسته بندی :دانلود مقاله :
Meta-analysis, funnel plots and sensitivity analysis 2000
نویسندگان :
JOHN COPAS , JIAN QING SHI
چکیده :
Publication bias is a major problem, perhaps the major problem, in meta-analysis (or systematic reviews).
Small studies are more likely to be published if their results are ‘significant’ than if their results
are negative or inconclusive, and so the studies available for review are biased in favour of those with
positive outcomes. Correcting for this bias is not possible without making untestable assumptions. In
this paper, a sensitivity analysis is suggested which is based on fitting a model to the funnel plot. Some
examples are discussed.
?> Funnel plots Meta analysis Selectivity bias Sensitivity analysisمطالب مرتبط :