Validation of a mobility item bank for older patients in primary care

Health and Quality of Life Outcomes

Research

Abilio Reig-Ferrer¹  Lorena González-Llopis²  Carmen Luz Muñoz-Mendoza³  Julio Cabrero-García³  María José Cabañero-Martínez³  Juan Diego Ramos-Pichardo³ 

[1] Department of Health Psychology, University of Alicante, Alicante, Spain;Department of Health, Alcoy, Alicante, Spain;Department of Nursing, University of Alicante, Ctra. San Vicente s/n, San Vicente del Raspeig, 03015, Alicante, Spain;

关键词: Mobility;    Differential item functioning;    Rasch analysis;    Gender differences;    Older people;    Primary care;    Item bank;   

DOI  :  10.1186/1477-7525-10-147

 received in 2012-08-19, accepted in 2012-11-29,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundTo develop and validate an item bank to measure mobility in older people in primary care and to analyse differential item functioning (DIF) and differential bundle functioning (DBF) by sex.MethodsA pool of 48 mobility items was administered by interview to 593 older people attending primary health care practices. The pool contained four domains based on the International Classification of Functioning: changing and maintaining body position, carrying, lifting and pushing, walking and going up and down stairs.ResultsThe Late Life Mobility item bank consisted of 35 items, and measured with a reliability of 0.90 or more across the full spectrum of mobility, except at the higher end of better functioning. No evidence was found of non-uniform DIF but uniform DIF was observed, mainly for items in the changing and maintaining body position and carrying, lifting and pushing domains. The walking domain did not display DBF, but the other three domains did, principally the carrying, lifting and pushing items.ConclusionsDuring the design and validation of an item bank to measure mobility in older people, we found that strength (carrying, lifting and pushing) items formed a secondary dimension that produced DBF. More research is needed to determine how best to include strength items in a mobility measure, or whether it would be more appropriate to design separate measures for each construct.

【 授权许可】

Unknown   
© Cabrero-Garcia et al.; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.