International clinimetric evaluation of the MG-QOL15, resulting in slight revision and subsequent validation of the MG-QOL15r

Ted M. Burns, Reza Sadjadi, Kimiaki Utsugisawa, Kelly G. Gwathmey, Amruta Joshi, Sarah Jones, Vera Bril, Carolina Barnett, Jeffrey T. Guptill, Donald B. Sanders, Lisa Hobson-Webb, Vern C. Juel, Janice Massey, Karissa L. Gable, Nicholas J. Silvestri, Gil Wolfe, Gary Cutter, Yuriko Nagane, Hiroyuki Murai, Masayuki MasudaMaria Elena Farrugia, Caroline Carmichael, Simone Birnbaum, Jean Yves Hogrel, Shahriar Nafissi, Farzad Fatehi, Changyi Ou, Weibin Liu, Mark Conaway

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Introduction: The MG-QOL15 is a validated, health-related quality of life (HRQOL) measure for myasthenia gravis (MG). Widespread use of the scale gave us the opportunity to further analyze its clinimetric properties. Methods: We first performed Rasch analysis on >1,300 15-item Myasthenia Gravis Quality of Life scale (MG-QOL15) completed surveys. Results were discussed during a conference call with specialists and biostatisticians. We decided to revise 3 items and prospectively evaluate the revised scale (MG-QOL15r) using either 3, 4, or 5 responses. Rasch analysis was then performed on >1,300 MG-QOL15r scales. Results: The MGQOL15r performed slightly better than the MG-QOL15. The 3-response option MG-QOL15r demonstrated better clinimetric properties than the 4- or 5-option scales. Relative distributions of item and person location estimates showed good coverage of disease severity. Conclusions: The MG-QOL15r is now the preferred HRQOL instrument for MG because of improved clinimetrics and ease of use. This revision does not negate previous studies or interpretations of results using the MG-QOL15. Muscle Nerve 54: 1015–1022, 2016.

Original languageEnglish
Pages (from-to)1015-1022
Number of pages8
JournalMuscle and Nerve
Volume54
Issue number6
DOIs
Publication statusPublished - Dec 1 2016

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Myasthenia Gravis
Quality of Life
Muscles

All Science Journal Classification (ASJC) codes

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)

Cite this

Burns, T. M., Sadjadi, R., Utsugisawa, K., Gwathmey, K. G., Joshi, A., Jones, S., ... Conaway, M. (2016). International clinimetric evaluation of the MG-QOL15, resulting in slight revision and subsequent validation of the MG-QOL15r. Muscle and Nerve, 54(6), 1015-1022. https://doi.org/10.1002/mus.25198

International clinimetric evaluation of the MG-QOL15, resulting in slight revision and subsequent validation of the MG-QOL15r. / Burns, Ted M.; Sadjadi, Reza; Utsugisawa, Kimiaki; Gwathmey, Kelly G.; Joshi, Amruta; Jones, Sarah; Bril, Vera; Barnett, Carolina; Guptill, Jeffrey T.; Sanders, Donald B.; Hobson-Webb, Lisa; Juel, Vern C.; Massey, Janice; Gable, Karissa L.; Silvestri, Nicholas J.; Wolfe, Gil; Cutter, Gary; Nagane, Yuriko; Murai, Hiroyuki; Masuda, Masayuki; Farrugia, Maria Elena; Carmichael, Caroline; Birnbaum, Simone; Hogrel, Jean Yves; Nafissi, Shahriar; Fatehi, Farzad; Ou, Changyi; Liu, Weibin; Conaway, Mark.

In: Muscle and Nerve, Vol. 54, No. 6, 01.12.2016, p. 1015-1022.

Research output: Contribution to journalArticle

Burns, TM, Sadjadi, R, Utsugisawa, K, Gwathmey, KG, Joshi, A, Jones, S, Bril, V, Barnett, C, Guptill, JT, Sanders, DB, Hobson-Webb, L, Juel, VC, Massey, J, Gable, KL, Silvestri, NJ, Wolfe, G, Cutter, G, Nagane, Y, Murai, H, Masuda, M, Farrugia, ME, Carmichael, C, Birnbaum, S, Hogrel, JY, Nafissi, S, Fatehi, F, Ou, C, Liu, W & Conaway, M 2016, 'International clinimetric evaluation of the MG-QOL15, resulting in slight revision and subsequent validation of the MG-QOL15r', Muscle and Nerve, vol. 54, no. 6, pp. 1015-1022. https://doi.org/10.1002/mus.25198
Burns, Ted M. ; Sadjadi, Reza ; Utsugisawa, Kimiaki ; Gwathmey, Kelly G. ; Joshi, Amruta ; Jones, Sarah ; Bril, Vera ; Barnett, Carolina ; Guptill, Jeffrey T. ; Sanders, Donald B. ; Hobson-Webb, Lisa ; Juel, Vern C. ; Massey, Janice ; Gable, Karissa L. ; Silvestri, Nicholas J. ; Wolfe, Gil ; Cutter, Gary ; Nagane, Yuriko ; Murai, Hiroyuki ; Masuda, Masayuki ; Farrugia, Maria Elena ; Carmichael, Caroline ; Birnbaum, Simone ; Hogrel, Jean Yves ; Nafissi, Shahriar ; Fatehi, Farzad ; Ou, Changyi ; Liu, Weibin ; Conaway, Mark. / International clinimetric evaluation of the MG-QOL15, resulting in slight revision and subsequent validation of the MG-QOL15r. In: Muscle and Nerve. 2016 ; Vol. 54, No. 6. pp. 1015-1022.
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AU - Sadjadi, Reza

AU - Utsugisawa, Kimiaki

AU - Gwathmey, Kelly G.

AU - Joshi, Amruta

AU - Jones, Sarah

AU - Bril, Vera

AU - Barnett, Carolina

AU - Guptill, Jeffrey T.

AU - Sanders, Donald B.

AU - Hobson-Webb, Lisa

AU - Juel, Vern C.

AU - Massey, Janice

AU - Gable, Karissa L.

AU - Silvestri, Nicholas J.

AU - Wolfe, Gil

AU - Cutter, Gary

AU - Nagane, Yuriko

AU - Murai, Hiroyuki

AU - Masuda, Masayuki

AU - Farrugia, Maria Elena

AU - Carmichael, Caroline

AU - Birnbaum, Simone

AU - Hogrel, Jean Yves

AU - Nafissi, Shahriar

AU - Fatehi, Farzad

AU - Ou, Changyi

AU - Liu, Weibin

AU - Conaway, Mark

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