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Floor and ceiling effects

MB Marc Beirer
JS Julian Serly
HV Helen Vester
DP Dominik Pförringer
MC Moritz Crönlein
SD Stephan Deiler
PB Peter Biberthaler
CK Chlodwig Kirchhoff
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According to McHorney et al. [9] floor and ceiling effects exist, if more than 15 % of the patients achieve the lowest or highest possible score. Similarly we defined the presence of floor or ceiling effects, if more than 15 % of our patient collective would achieve the lowest (0 points) or highest (100 points) possible score of the MWQ.

Copyright and License information: Beirer et al. ©2016
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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