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.

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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.