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Σάββατο 3 Φεβρουαρίου 2018

Is it significant? Is it relevant?

As outlined in the editorial by Stecker et al. (2017) in the October issue of Clinical Neurophysiology, there is little difference between the evidence for a p-value slightly less than 0.05 and another slightly larger than 0.05. However, based on a stringent cut-off of α = 0.05, a hypothesis for which p = 0.04 is conventionally accepted as true while, alternatively, with a p = 0.06 is rejected since it is "not significant". This is a common and uncomfortable "In-or-Out" scenario, but also every time a test of statistical significance is employed, researchers' interpretation of the study findings would greatly benefit from the valuable data conveyed by confidence intervals.

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