Sadeghi Mahall N, Hoseini M, Rahgozar M, Norouzi Tabrizi K. Comparing Psychometric Properties of GLFS-5 With GLFS-25 for Screening Locomotive Syndrome in Community-dwelling Iranian Older People. Iranian Rehabilitation Journal 2021; 19 (4) :417-424
URL:
http://irj.uswr.ac.ir/article-1-1259-en.html
1- Department of Nursing, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
2- Department of Rehabilitation, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
3- Department of Biomedical and Computer Sciences, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
4- Department of Nursing, Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
Abstract: (2918 Views)
Objectives: Locomotive syndrome refers to reduced mobility due to impairment of locomotive organs. Because of the importance of screening locomotive syndrome among older people, this article is focused on psychometric characteristics of Geriatric Locomotive Function Scale (GLFS)-5 and comparing it with GLFS-25 in Iranian older adults
Methods: This research was conducted on 320 older Iranian people. Validity and reliability of the GLFS-5 were examined and confirmed using Content Validity Index (CVI), factor analysis, correlation coefficient with the European Quality of Life Scale-5 Dimension (EQ-5D) questionnaire, the Cronbach α value for internal consistency, and intraclass correlation and Receiver Operating Characteristic (ROC) technique to determine the cutoff score for the locomotive syndrome.
Results: In phase 1 of the study, 250 Iranian older people ≥60 years were analyzed. The factor analysis showed that the GLFS-25 is a multi-dimensional scale (Activities of Daily Livings [ADLs] and Quality of Life [QoL], pain, social relationship, and psychological status), and GLFS-5 is a one-dimensional scale (the ability to perform daily activities). The Cronbach α values for GLFS-25 and GLFS-5 were 0.93 and 0.84, respectively. As for association between the GLFS-25 and GLFS-5 with EQ-5D and Visual Analogue Scale (VAS) (health self-perceived), the Pearson correlation coefficients were 0.85 and -0.72 for GLFS-25 (P=0.01) and 0.82 and -0.67 for GLFS-5 (P=0.01), respectively. The cutoff scores to identify locomotive syndrome for the GLFS-25 and GLFS-5 were 16 and 4, respectively.
Discussion: Considering the good validity and reliability properties of the GLFS-5 compared to GLFS-25 and the more convenient use of this short version of the GLFS, its application is highly recommended for community-based screening of locomotive syndrome in Iranian older people.
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● Early and detective screening of locomotive syndrome requires reliable, standard, and user-friendly tools.
● The psychometric properties of both versions of the GLFS tool (25 and 5 items) are very close and acceptable.
● So, the short version (GLFS-5) can be used instead of the long version in emergencies to screen seniors.
Plain Language Summary
The locomotive syndrome is one of the most common disorders that can lead to dependency and limited activity daily living among seniors. Early detection of this condition requires screening tools that fit seniors. The questionnaire of Geriatric Locomotive Function Scale (GLFS) is one of the instruments to identify the elderly persons at locomotive syndrome risk. It has been designed in two versions (5 and 25 items) by the Japan Orthopedic Association. To ensure the applicability and useability of this questionnaire in the Iranian older people, a psychometric review is necessary. Because the time saving and accuracy of screening in older people is very important, and no studies have compared psychometric properties of two versions of the GLFS, this research was done on a representative sample of community-dwelling Iranian older people. Comparison of psychometric properties of the two versions shows that both have good validity and reliability among Iranian seniors. Also, due to the proximity of the psychometric properties, we recommend using the short version in emergencies to save time.
Article type:
Original Research Articles |
Subject:
Aging Studies Received: 2020/11/9 | Accepted: 2021/09/20 | Published: 2021/12/1
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