Back to Browse Journals » Patient Related Outcome Measures » Volume 1

Developing brief fatigue short forms calibrated to a common mathematical metric: is content-balancing important?

Authors Karon F Cook, Seung W Choi, Kurt L Johnson, et al

Published Date August 2010 Volume 2010:1 Pages 65—71


Published 10 August 2010

Karon F Cook1, Seung W Choi2, Kurt L Johnson1, Dagmar Amtmann1

1Department of Rehabilitation Medicine, University of Washington, Seattle, WA; 2Northwestern University Feinberg School of Medicine, Chicago, IL, USA

Abstract: There are clinical and research settings in which concerns about respondent burden make the use of longer self-report measures impractical. Though computer adaptive testing provides an efficient strategy for measuring patient reported outcomes, the requirement of a computer interface makes it impractical for some settings. This study evaluated how well brief short forms, constructed from a longer measure of patient reported fatigue, reproduced scores on the full measure. When the items of an item bank are calibrated using an item response theory model, it is assumed that the items are fungible units. Theoretically, there should be no advantage to balancing the content coverage of the items. We compared short forms developed using a random item selection process to short forms developed with consideration of the items relation to subdomains of fatigue (ie, physical and cognitive fatigue). Scores on short forms developed using content balancing more successfully predicted full item bank scores than did scores on short forms developed by random selection of items.

Keywords: psychometrics, outcomes, quality of life, measurement, fatigue

Download Article [PDF] View Full Text [HTML] 

Creative Commons License This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution - Non Commercial (unported, v3.0) License. The full terms of the License are available at Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. Permissions beyond the scope of the License are administered by Dove Medical Press Limited. Information on how to request permission may be found at:

Other article by this author:

Is less more? A preliminary investigation of the number of response categories in self-reported pain

Karon F Cook, David Cella, Erin L Boespflug, et al

Patient Related Outcome Measures 2010, 1:9-18

Published Date: 14 May 2010

Readers of this article also read:

Reduced adhesion of Staphylococcus aureus to ZnO/PVC nanocomposites

Geilich BM, Webster TJ

International Journal of Nanomedicine 2013, 8:1177-1184

Published Date: 21 March 2013

Outcome mapping for health system integration

Tsasis P, Evans JM, Forrest D, Jones RK

Journal of Multidisciplinary Healthcare 2013, 6:99-107

Published Date: 14 March 2013

Effectiveness of a physiotherapy-initiated telephone triage of orthopedic waitlist patients

Morris J, Grimmer-Somers K, Kumar S, Murphy K, Gilmore L, Ashman B, Perera C, Vine K, Coulter C

Patient Related Outcome Measures 2011, 2:151-159

Published Date: 22 August 2011

Physical growth in children with transfusion-dependent thalassemia

Harish K Pemde, Jagdish Chandra, Divya Gupta, et al

Pediatric Health, Medicine and Therapeutics 2011, 2:13-19

Published Date: 9 February 2011

Disparities in health care utilization among Latino children suffering from asthma in California

Jongwha Chang, Isha Patel, Sherry T Liu, et al

Pediatric Health, Medicine and Therapeutics 2011, 2:1-8

Published Date: 11 January 2011

Application of PIP data in health economic models for market access

Nadine van Dongen, Mark JC Nuijten

Patient Intelligence 2010, 2:53-58

Published Date: 24 November 2010

Health literacy and health seeking behavior among older men in a middle-income nation

Paul A Bourne, Chloe Morris, Christopher AD Charles, et al

Patient Related Outcome Measures 2010, 1:39-49

Published Date: 26 May 2010

Role of aliskiren in cardio-renal protection and use in hypertensives with multiple risk factors

Eduardo Pimenta, Suzanne Oparil

Vascular Health and Risk Management 2009, 5:453-463

Published Date: 19 May 2009