Life-space mobility assessment in older people in Finland; measurement properties in winter and spring
Portegijs, E., Iwarsson, S., Rantakokko, M., Viljanen, A., & Rantanen, T. (2014). Life-space mobility assessment in older people in Finland; measurement properties in winter and spring. BMC Research Notes, 7(323). https://doi.org/10.1186/1756-0500-7-323
Published inBMC Research Notes
© 2014 Portegijs et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver applies to the data made available in this article, unless otherwise stated
Background: Life-space mobility refers to the spatial area an individual moves through, the frequency and need for assistance. Based on the assumption that measurement scale properties are context-specific, we tested the scale distribution, responsiveness, and reproducibility of the 15-item University of Alabama at Birmingham Study of Aging Life-Space Assessment in older people in Finland, specifically accounting for season. Methods: Community-dwelling older men and women in cent ral Finland aged 75-90 y ears were interviewed to determine life-space mobility (score range 0-120). Baseline (January-June 2012) and one-year follow-up data (January-June 2013; n = 806) from the cohort study “ Life-space mobility in old age ” were used to investigate the scale distribution and responsiveness over a period of o ne year. In addition, with a sub-sample in conjunction with the one-year follow-up, we collected data to study t he two-week test-retest reproducibility (n = 18 winter andn=21spring2013). Results: The median life-space mobility score at baseline wa s 64. The median change in score over the one-year follow-up was zero. However, participants reporting a d ecline in health (repeated measures ANOVA p = .016) or mobility (p = .002) status demonstrated a significantly larger decrease in life-space mobility score than those reporting no or positive changes over the year. The two-week intra-class correlation (ICC) coefficient was .72. Lower ICC was found in the winter than in the spring sample and for items that represent higher life-space levels. Conclusions: The test-retest reproducibility of the Life-Space Assessment was fair but somewhat compromised in the winter. Mobility of older people at the life-space levels of “ town ” and “ beyond town ” may be more variable. Life-space mobility was responsive to change, regardless of season. Further study is warranted to obtain insight in the factors contributing to seasonal effects. ...
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Except where otherwise noted, this item's license is described as © 2014 Portegijs et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver applies to the data made available in this article, unless otherwise stated
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