Psychometric Evaluation of the Icelandic Version of the Modified Dynamic Gait Index for Community-Dwelling Older Adults With Balance Impairments

IF 2.1 4区医学 Q3 HEALTH CARE SCIENCES & SERVICES

Journal of evaluation in clinical practice Pub Date : 2024-12-11 DOI:10.1111/jep.14262

Solveig A. Arnadottir, Ragnar F. Gustafsson, Nina D. Oskarsdottir, Holmfridur H. Sigurdardottir, Atli Agustsson

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引用次数: 0

Abstract

Rationale

Optimal mobility is crucial for healthy aging, particularly among older adults with balance impairments. This research examines the psychometric properties of the modified Dynamic Gait Index (mDGI) translated into Icelandic, highlighting its suitability for evaluating mobility in this demographic group and within the context of healthy aging. Addressing the scarcity of international psychometric research on the mDGI, this study contributes to the translation of geriatric outcome measures into different languages, enhancing clinical applications and international research.

Aim

To assess the reliability and validity of the mDGI among Icelandic older adults experiencing balance impairments.

Methods

This methodological study included 30 participants, aged 67–91 years, receiving outpatient physical therapy for balance impairments. The participants completed two mDGI assessments 4–7 days apart, and additional assessments using the 10-meter walking test (10MWT), Timed Up and Go (TUG), Activities-specific Balance Confidence (ABC) scale, and Short Form Health Survey (SF-36) subscales. Analysis included evaluating the mDGI's total scale and subscales' reliability and validity using Intraclass Correlation Coefficient (ICC_3,1), Standard Error of Measurement (SEM), Cronbach's alpha, and Spearman's rho.

Results

The mDGI demonstrated high relative reliability (ICC_3,1 = 0.95 for total mDGI; 0.73–0.92 for all subscales) and strong absolute reliability (SEM for total mDGI = 1.32; two subscales = 1.17–1.43). Internal consistency was robust (alpha for total mDGI = 0.9; two subscales = 0.86–0.89). Construct validity was confirmed by mDGI's correlations with 10MWT, TUG, and SF-36 social and physical functioning subscales. No floor or ceiling effects were observed in mDGI total scores.

Conclusion

The Icelandic version of the mDGI provides reliable and valid measures for evaluating balance and gait in older adults with balance impairments. Its sound psychometric properties support its use in similar demographic settings globally, providing a reliable tool for geriatric care practitioners and researchers worldwide.

Abstract Image

查看原文本刊更多论文

冰岛版修正动态步态指数对社区居住老年人平衡障碍的心理测量评估。

理由：最佳的活动能力对于健康的老龄化至关重要，特别是对于有平衡障碍的老年人。本研究考察了翻译成冰岛语的改进动态步态指数（mDGI）的心理测量特性，强调了其在这一人口群体和健康老龄化背景下评估流动性的适用性。针对国际上对mDGI心理测量研究的缺乏，本研究有助于将老年结果测量方法翻译成不同的语言，加强临床应用和国际研究。目的：评估mDGI在冰岛经历平衡障碍的老年人中的信度和效度。方法：本方法学研究包括30名参与者，年龄67-91岁，接受门诊物理治疗平衡障碍。参与者间隔4-7天完成两次mDGI评估，并使用10米步行测试（10MWT）、计时起身和行走（TUG）、特定活动平衡信心（ABC）量表和简短健康调查（SF-36）子量表进行额外评估。分析包括使用类内相关系数（ICC3,1）、测量标准误差（SEM）、Cronbach’s alpha和Spearman’s rho评价mDGI的总量表和子量表的信度和效度。结果：mDGI具有较高的相对可靠性(ICC3,1 = 0.95；所有子量表均为0.73-0.92)，绝对信度强(总mDGI的SEM = 1.32；两个分量表= 1.17-1.43)。内部一致性是稳健的(总mDGI的alpha = 0.9；两个分量表= 0.86-0.89)。mDGI与10MWT、TUG和SF-36社会和身体功能量表的相关性证实了结构效度。在mDGI总分中没有观察到下限或上限效应。结论：冰岛版mDGI为评估平衡障碍老年人的平衡和步态提供了可靠和有效的措施。其良好的心理测量特性支持其在全球类似人口统计环境中的使用，为全球老年护理从业者和研究人员提供了可靠的工具。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of evaluation in clinical practice 医学-卫生保健

CiteScore

4.80

自引率

4.20%

发文量

143

审稿时长

3-8 weeks

期刊介绍： The Journal of Evaluation in Clinical Practice aims to promote the evaluation and development of clinical practice across medicine, nursing and the allied health professions. All aspects of health services research and public health policy analysis and debate are of interest to the Journal whether studied from a population-based or individual patient-centred perspective. Of particular interest to the Journal are submissions on all aspects of clinical effectiveness and efficiency including evidence-based medicine, clinical practice guidelines, clinical decision making, clinical services organisation, implementation and delivery, health economic evaluation, health process and outcome measurement and new or improved methods (conceptual and statistical) for systematic inquiry into clinical practice. Papers may take a classical quantitative or qualitative approach to investigation (or may utilise both techniques) or may take the form of learned essays, structured/systematic reviews and critiques.