AUTHOR=Mayhew Anna G. , James Meredith K. , Moore Ursula , Sutherland Helen , Jacobs Marni , Feng Jia , Lowes Linda Pax , Alfano Lindsay N. , Muni Lofra Robert , Rufibach Laura E. , Rose Kristy , Duong Tina , Bello Luca , Pedrosa-Hernández Irene , Holsten Scott , Sakamoto Chikako , Canal Aurélie , Sánchez-Aguilera Práxedes Nieves , Thiele Simone , Siener Catherine , Vandevelde Bruno , DeWolf Brittney , Maron Elke , Gordish-Dressman Heather , Hilsden Heather , Guglieri Michela , Hogrel Jean-Yves , Blamire Andrew M. , Carlier Pierre G. , Spuler Simone , Day John W. , Jones Kristi J. , Bharucha-Goebel Diana X. , Salort-Campana Emmanuelle , Pestronk Alan , Walter Maggie C. , Paradas Carmen , Stojkovic Tanya , Mori-Yoshimura Madoka , Bravver Elena , Díaz-Manera Jordi , Pegoraro Elena , Mendell Jerry R. , Straub Volker TITLE=Assessing the Relationship of Patient Reported Outcome Measures With Functional Status in Dysferlinopathy: A Rasch Analysis Approach JOURNAL=Frontiers in Neurology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2022.828525 DOI=10.3389/fneur.2022.828525 ISSN=1664-2295 ABSTRACT=

Dysferlinopathy is a muscular dystrophy with a highly variable functional disease progression in which the relationship of function to some patient reported outcome measures (PROMs) has not been previously reported. This analysis aims to identify the suitability of PROMs and their association with motor performance.Two-hundred and four patients with dysferlinopathy were identified in the Jain Foundation's Clinical Outcome Study in Dysferlinopathy from 14 sites in 8 countries. All patients completed the following PROMs: Individualized Neuromuscular Quality of Life Questionnaire (INQoL), International Physical Activity Questionnaire (IPAQ), and activity limitations for patients with upper and/or lower limb impairments (ACTIVLIMs). In addition, nonambulant patients completed the Egen Klassifikation Scale (EK). Assessments were conducted annually at baseline, years 1, 2, 3, and 4. Data were also collected on the North Star Assessment for Limb Girdle Type Muscular Dystrophies (NSAD) and Performance of Upper Limb (PUL) at these time points from year 2. Data were analyzed using descriptive statistics and Rasch analysis was conducted on ACTIVLIM, EK, INQoL. For associations, graphs (NSAD with ACTIVLIM, IPAQ and INQoL and EK with PUL) were generated from generalized estimating equations (GEE). The ACTIVLIM appeared robust psychometrically and was strongly associated with the NSAD total score (Pseudo R2 0.68). The INQoL performed less well and was poorly associated with the NSAD total score (Pseudo R2 0.18). EK scores were strongly associated with PUL (Pseudo R2 0.69). IPAQ was poorly associated with NSAD scores (Pseudo R2 0.09). This study showed that several of the chosen PROMs demonstrated change over time and a good association with functional outcomes. An alternative quality of life measure and method of collecting data on physical activity may need to be selected for assessing dysferlinopathy.