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The intra- and inter-rater reliability of the tragus wall distance (TWD) measurement in non-pathological participants ages 18-34.
MedLine Citation:
PMID:  23039018     Owner:  NLM     Status:  Publisher    
Objectives To assess intra-rater and inter-rater reliability of the tragus wall distance (TWD) measurement in non-pathologic individuals aged 18-34. Background: Physical therapists evaluate posture as a component of health status. A literature review suggests need for reliable clinical tools to assess head position. Methods: The TWD measurement is the horizontal distance between the tragus, the auricular cartilaginous flap anterior to the external auditory meatus, and a wall. Sixty-three adults aged 18-34 years were consecutively assigned to three raters for double-blinded repeated measures of TWD distance. Statistical analyses included descriptive statistics of the sample, interclass correlation coefficient (ICC), analysis of variance (ANOVA), t-tests (p < 0.05), and Pearson correlation coefficients to quantify correlations between raters and repeated measures. Results: ANOVA results for intra-rater reliability indicated consistency among individual raters. All raters demonstrated significant correlations across repeated measures, ICC = 0.92-0.94. ANOVA and t-test results did not support inter-rater reliability. However, ICC = 0.90, standard error of measurement = 0.22, and Pearson R = 0.84 supported inter-rater reliability. The evidence suggests that although the absolute TWD measurement values may not be reliable among raters, relative change between TWD measures demonstrates high inter-rater reliability. Conclusions: TWD measurement has high intra-rater reliability. TWD measurement of a single patient by multiple raters is not supported.
Nancy K Shipe; Barbara Billek-Sawhney; Tracy A Canter; Dennis J Meals; Joanna M Nestler; Janel L Stumpff
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-8
Journal Detail:
Title:  Physiotherapy theory and practice     Volume:  -     ISSN:  1532-5040     ISO Abbreviation:  Physiother Theory Pract     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9015520     Medline TA:  Physiother Theory Pract     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Assistant Professor , Graduate School of Physical Therapy, Slippery Rock University , Slippery Rock, PA , USA.
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