Journal article
Improving Measurement Efficiency of the Inner EAR Scale with Item Response Theory
Otolaryngology-head and neck surgery, Vol.158(6), pp.1093-1100
06/2018
DOI: 10.1177/0194599818760528
PMID: 29512425
Abstract
Objectives
(1) To assess the 11‐item Inner Effectiveness of Auditory Rehabilitation (Inner EAR) instrument with item response theory (IRT). (2) To determine whether the underlying latent ability could also be accurately represented by a subset of the items for use in high‐volume clinical scenarios. (3) To determine whether the Inner EAR instrument correlates with pure tone thresholds and word recognition scores.
Design
IRT evaluation of prospective cohort data.
Setting
Tertiary care academic ambulatory otolaryngology clinic.
Subjects and Methods
Modern psychometric methods, including factor analysis and IRT, were used to assess unidimensionality and item properties. Regression methods were used to assess prediction of word recognition and pure tone audiometry scores.
Results
The Inner EAR scale is unidimensional, and items varied in their location and information. Information parameter estimates ranged from 1.63 to 4.52, with higher values indicating more useful items. The IRT model provided a basis for identifying 2 sets of items with relatively lower information parameters. Item information functions demonstrated which items added insubstantial value over and above other items and were removed in stages, creating a 8‐ and 3‐item Inner EAR scale for more efficient assessment. The 8‐item version accurately reflected the underlying construct. All versions correlated moderately with word recognition scores and pure tone averages.
Conclusion
The 11‐, 8‐, and 3‐item versions of the Inner EAR scale have strong psychometric properties, and there is correlational validity evidence for the observed scores. Modern psychometric methods can help streamline care delivery by maximizing relevant information per item administered.
Details
- Title: Subtitle
- Improving Measurement Efficiency of the Inner EAR Scale with Item Response Theory
- Creators
- Annika Jessen - Harvard Graduate School of EducationAndrew D. Ho - Harvard Graduate School of EducationC. Eduardo Corrales - Harvard UniversityBevan Yueh - University of Minnesota Medical CenterJennifer J. Shin - Harvard University
- Resource Type
- Journal article
- Publication Details
- Otolaryngology-head and neck surgery, Vol.158(6), pp.1093-1100
- DOI
- 10.1177/0194599818760528
- PMID
- 29512425
- NLM abbreviation
- Otolaryngol Head Neck Surg
- ISSN
- 0194-5998
- eISSN
- 1097-6817
- Publisher
- SAGE Publications
- Number of pages
- 8
- Language
- English
- Date published
- 06/2018
- Academic Unit
- Otolaryngology
- Record Identifier
- 9984966855902771
Metrics
3 Record Views