Essential skills for evidence-based practice: Statistics for therapy questions
Repository Posting Date2020-02-14T17:45:32Z
Author(s)Grace, Jeanne T.
Author DetailsJeanne T. Grace, RN, PhD
Lead Author Sigma AffliationEpsilon Xi
Original PublisherMahidol University, Thailand
Level of EvidenceN/A
Evidence to support the effectiveness of therapies commonly compares the outcomes between a group of individuals who received the therapy and a group of individuals who did not. Nurses must be able to interpret the statistics used to report these comparisons to determine not only whether there is a “real” (i.e. statistically significant) difference between the outcomes of the groups, but also whether that difference is large enough and precise enough to be clinically meaningful. The statistics involved depend on whether the outcome is expressed as a categorical (e.g. yes/no) or a continuous (e.g. pounds, length of stay) measure. When confidence intervals, rather than hypothesis tests, are used to determine whether the differences are statistically significant, nurses receive additional information on which to base practice decisions.
Date of Publication2010-01
Citation of Original PublicationGrace, J. T. (2009) Essential Skills for Evidence-based Practice: Statistics for Therapy Questions. Journal of Nursing Science, 28(1), 12-18.
Version of PublicationPublisher’s Version
NotesThis work appears in the Sigma Repository pursuant to a Creative Commons Attribution 4.0 International License attached to the work upon its publication in the journal acknowledged in this record. Please refer to the attached license (the icon at the bottom of this entry) for further information and terms. All terms of the license have been followed. The Sigma Repository is sharing this article for educational purposes only. There are no changes in this article from the original posting.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Visits vs Downloads
Visitors - World Map
Top Visiting Countries
Top Visiting Cities
Visits (last 6 months)
Downloads (last 6 months)
Popular Works for Grace, Jeanne T. by View
Popular Works for Grace, Jeanne T. by Download
The citations below are meant to be used as guidelines. Patrons must make any necessary corrections before using. Pay special attention to personal names, capitalization, and dates. Always consult appropriate citation style resources for the exact formatting and punctuation guidelines.