Rebecca B Ramalho, Thais C Chaves, Berend Terluin, Luiz F A Selistre
{"title":"Minimal Important Changes of Common Outcome Measures of Physical Function in Individuals with Knee Osteoarthritis: A Prospective Clinical Study.","authors":"Rebecca B Ramalho, Thais C Chaves, Berend Terluin, Luiz F A Selistre","doi":"10.1016/j.apmr.2025.04.016","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>To investigate the Minimal Important Change (MIC) for the 40-meter Fast Paced Walk Test (40m FPWT), the 30-second Chair Stand Test (30s CST), 11-step Stair Climb Test (11-step SCT) and the Western Ontario and McMaster Universities Osteoarthritis Index - physical function subscale (WOMAC-PF) in individuals with knee osteoarthritis (KOA) according to three methods described in the literature.</p><p><strong>Design: </strong>A prospective clinical study.</p><p><strong>Setting: </strong>Department of Physiotherapy at Federal University of São Carlos (Brazil) PARTICIPANTS: A total of 107 participants.</p><p><strong>Interventions: </strong>Not applicable.</p><p><strong>Main outcome measure: </strong>Performance-based tests and WOMAC-PF were applied. After six months the Global Perceived Effect (GPE) scale was used to evaluate changes in physical function. A GPE cut-off score was established to categorize participants as improved or not improved. The MIC<sub>mean</sub>, MIC<sub>ROC</sub>, and MIC<sub>adjusted</sub> were calculated. Anchor reliability was assessed through longitudinal confirmatory factor analysis.</p><p><strong>Results: </strong>Out of 80 study participants, 19 were in the improved group. The MIC<sub>mean</sub> of the subgroups ranged from 0.07 to 0.29 m/s for the 40m FPWT, from 2.07 to 5.29 stands for the 30s CST, from 2.14 to 5.58s for the 11-step SCT, and from 4.21 to 27 for the WOMAC-PF. The MIC<sub>ROC</sub> values were 0.14 m/s for the 40m FPWT, 1.5 stands for the 30s CST, 1.79s for the 11-step SCT and 4.5 for the WOMAC-PF. The MIC<sub>adjusted</sub> values were 0.10 m/s for the 40m FPWT, 0.7 stands for the 30s CST, 4.0s for the 11-step SCT and 12.8 for the WOMAC-PF.</p><p><strong>Conclusion: </strong>The MIC<sub>adjusted</sub> method considers both the proportion of improved patients and the reliability of transition ratings, making it preferable to MIC<sub>mean</sub> and MIC<sub>ROC</sub>. However, more high-quality studies are needed to assess its performance in samples with floor or ceiling effects.</p>","PeriodicalId":8313,"journal":{"name":"Archives of physical medicine and rehabilitation","volume":" ","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Archives of physical medicine and rehabilitation","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.apmr.2025.04.016","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"REHABILITATION","Score":null,"Total":0}
引用次数: 0
Abstract
Objectives: To investigate the Minimal Important Change (MIC) for the 40-meter Fast Paced Walk Test (40m FPWT), the 30-second Chair Stand Test (30s CST), 11-step Stair Climb Test (11-step SCT) and the Western Ontario and McMaster Universities Osteoarthritis Index - physical function subscale (WOMAC-PF) in individuals with knee osteoarthritis (KOA) according to three methods described in the literature.
Design: A prospective clinical study.
Setting: Department of Physiotherapy at Federal University of São Carlos (Brazil) PARTICIPANTS: A total of 107 participants.
Interventions: Not applicable.
Main outcome measure: Performance-based tests and WOMAC-PF were applied. After six months the Global Perceived Effect (GPE) scale was used to evaluate changes in physical function. A GPE cut-off score was established to categorize participants as improved or not improved. The MICmean, MICROC, and MICadjusted were calculated. Anchor reliability was assessed through longitudinal confirmatory factor analysis.
Results: Out of 80 study participants, 19 were in the improved group. The MICmean of the subgroups ranged from 0.07 to 0.29 m/s for the 40m FPWT, from 2.07 to 5.29 stands for the 30s CST, from 2.14 to 5.58s for the 11-step SCT, and from 4.21 to 27 for the WOMAC-PF. The MICROC values were 0.14 m/s for the 40m FPWT, 1.5 stands for the 30s CST, 1.79s for the 11-step SCT and 4.5 for the WOMAC-PF. The MICadjusted values were 0.10 m/s for the 40m FPWT, 0.7 stands for the 30s CST, 4.0s for the 11-step SCT and 12.8 for the WOMAC-PF.
Conclusion: The MICadjusted method considers both the proportion of improved patients and the reliability of transition ratings, making it preferable to MICmean and MICROC. However, more high-quality studies are needed to assess its performance in samples with floor or ceiling effects.
期刊介绍：
The Archives of Physical Medicine and Rehabilitation publishes original, peer-reviewed research and clinical reports on important trends and developments in physical medicine and rehabilitation and related fields. This international journal brings researchers and clinicians authoritative information on the therapeutic utilization of physical, behavioral and pharmaceutical agents in providing comprehensive care for individuals with chronic illness and disabilities.
Archives began publication in 1920, publishes monthly, and is the official journal of the American Congress of Rehabilitation Medicine. Its papers are cited more often than any other rehabilitation journal.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
