Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults

AbstractObjective The primary objectives of this study were to 1) investigate the internal consistency 2) and construct validity of the Short Musculoskeletal Function Assessment Questionnaire (SMFA) in older adults commencing physical rehabilitation in an outpatient setting.Methods This cross-sectio...

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Main Authors: Sanel Teljigovic, Marianne Lindahl, Camilla Mølholm von Magius, Gisela Sjøgaard, Karen Søgaard, Louise Fleng Sandal
Format: Article
Language:English
Published: Taylor & Francis Group 2023-12-01
Series:Annals of Medicine
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/07853890.2023.2234936
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author Sanel Teljigovic
Marianne Lindahl
Camilla Mølholm von Magius
Gisela Sjøgaard
Karen Søgaard
Louise Fleng Sandal
author_facet Sanel Teljigovic
Marianne Lindahl
Camilla Mølholm von Magius
Gisela Sjøgaard
Karen Søgaard
Louise Fleng Sandal
author_sort Sanel Teljigovic
collection DOAJ
description AbstractObjective The primary objectives of this study were to 1) investigate the internal consistency 2) and construct validity of the Short Musculoskeletal Function Assessment Questionnaire (SMFA) in older adults commencing physical rehabilitation in an outpatient setting.Methods This cross-sectional study recruited older adults who had commenced physical rehabilitation in an outpatient setting. The SMFA consists of two indices: 1) dysfunction capturing the impact of musculoskeletal disorders on physical limitations, and 2) bothering capturing how the individual is emotionally affected by their disorder. SMFA holds four categories: ‘mobility’, ‘daily activities’, ‘emotional status’, and ‘function of the arm and hand’. Participants answered the SMFA alongside other patient-reported questionnaires (such as the 36-Item Short Form Survey, SF-36) and similar) and objectively measured muscle strength for the upper and lower body and functional capacity.Results We included 115 older adults with a median age of 74 years (IQR 9). Adequate internal consistency was seen with Cronbach’s alpha values of 0.90–0.94 for the SMFA indices and 0.77–0.91 for the SMFA categories. The strongest correlations between the SMFA indices were observed with the SF-36 physical component summary (SMFA-Dysfunction r = 0.74, p < 0.05, SMFA-Bother r = 0.72, p < 0.05). Only fair correlations were found between SMFA index scores and clinical outcome measures.Discussion This study demonstrated that the SMFA has adequate internal consistency and construct validity for self-reported health status in older adults, especially when considering components covering physical health status. However, we only observed fair correlations between SMFA and clinical outcome measures, indicating that SMFA does not adequately capture muscle strength and functional capacity.
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spelling doaj.art-c15c2b870fcf471cbeeb8c69ca77c3752024-01-16T19:13:22ZengTaylor & Francis GroupAnnals of Medicine0785-38901365-20602023-12-0155110.1080/07853890.2023.2234936Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adultsSanel Teljigovic0Marianne Lindahl1Camilla Mølholm von Magius2Gisela Sjøgaard3Karen Søgaard4Louise Fleng Sandal5Centre for Health and Rehabilitation, University College Absalon, Slagelse, DenmarkCentre for Health and Rehabilitation, University College Absalon, Slagelse, DenmarkCenter for Sundhed og Ældre, Sundhed &amp; Træning, Slagelse, DenmarkDepartment of Sports Science and Clinical Biomechanics, University of Southern Denmark, DenmarkDepartment of Sports Science and Clinical Biomechanics, University of Southern Denmark, DenmarkDepartment of Sports Science and Clinical Biomechanics, University of Southern Denmark, DenmarkAbstractObjective The primary objectives of this study were to 1) investigate the internal consistency 2) and construct validity of the Short Musculoskeletal Function Assessment Questionnaire (SMFA) in older adults commencing physical rehabilitation in an outpatient setting.Methods This cross-sectional study recruited older adults who had commenced physical rehabilitation in an outpatient setting. The SMFA consists of two indices: 1) dysfunction capturing the impact of musculoskeletal disorders on physical limitations, and 2) bothering capturing how the individual is emotionally affected by their disorder. SMFA holds four categories: ‘mobility’, ‘daily activities’, ‘emotional status’, and ‘function of the arm and hand’. Participants answered the SMFA alongside other patient-reported questionnaires (such as the 36-Item Short Form Survey, SF-36) and similar) and objectively measured muscle strength for the upper and lower body and functional capacity.Results We included 115 older adults with a median age of 74 years (IQR 9). Adequate internal consistency was seen with Cronbach’s alpha values of 0.90–0.94 for the SMFA indices and 0.77–0.91 for the SMFA categories. The strongest correlations between the SMFA indices were observed with the SF-36 physical component summary (SMFA-Dysfunction r = 0.74, p < 0.05, SMFA-Bother r = 0.72, p < 0.05). Only fair correlations were found between SMFA index scores and clinical outcome measures.Discussion This study demonstrated that the SMFA has adequate internal consistency and construct validity for self-reported health status in older adults, especially when considering components covering physical health status. However, we only observed fair correlations between SMFA and clinical outcome measures, indicating that SMFA does not adequately capture muscle strength and functional capacity.https://www.tandfonline.com/doi/10.1080/07853890.2023.2234936SMFAolder adultsconstruct validityinternal consistency
spellingShingle Sanel Teljigovic
Marianne Lindahl
Camilla Mølholm von Magius
Gisela Sjøgaard
Karen Søgaard
Louise Fleng Sandal
Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults
Annals of Medicine
SMFA
older adults
construct validity
internal consistency
title Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults
title_full Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults
title_fullStr Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults
title_full_unstemmed Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults
title_short Internal consistency and construct validity of the Short Musculoskeletal Function Assessment (SMFA) in older adults
title_sort internal consistency and construct validity of the short musculoskeletal function assessment smfa in older adults
topic SMFA
older adults
construct validity
internal consistency
url https://www.tandfonline.com/doi/10.1080/07853890.2023.2234936
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