Data Dredging

(redirected from Data fishing)
(1) The use of a multiple-comparison method—e.g., Scheffe’s test—which allows investigators performing a study to select group means to test after the experiment begins, by allowing possible comparisons, one of which may suggest a trend in a study, hence the term ‘dredging’
(2) Digging through the data in a clinical trial trying to find statistically significant trends or differences between therapeutic arms
References in periodicals archive ?
However, when post hoc data fishing is likely, an original investigator may reasonably require that a recipient register the planned analyses publicly, including corrections for multiple analyses, prior to receiving copies of the data.