Initial validation of the dimensions of home measure

Aplin, Tammy, Chien, Chi-Wen and Gustafsson, Louise (2016) Initial validation of the dimensions of home measure. Australian Occupational Therapy Journal, 63 1: 47-56. doi:10.1111/1440-1630.12270


Author Aplin, Tammy
Chien, Chi-Wen
Gustafsson, Louise
Title Initial validation of the dimensions of home measure
Journal name Australian Occupational Therapy Journal   Check publisher's open access policy
ISSN 0045-0766
1440-1630
Publication date 2016-02-01
Sub-type Article (original research)
DOI 10.1111/1440-1630.12270
Volume 63
Issue 1
Start page 47
End page 56
Total pages 10
Place of publication Richmond, Australia
Publisher Wiley-Blackwell Publishing Asia
Collection year 2017
Language eng
Formatted abstract
Background
Research has established a need to consider further aspects of the home environment in home modification provision and evaluation. The Dimensions of Home Measure (DOHM) was developed as a self-report outcome measurement tool for home modification practice to meet this need. Its development was informed by a literature review and qualitative exploration which identified six dimensions of the home environment: the physical, social, personal, temporal, occupational and societal dimensions which contribute to one's experience of home. This paper reports the initial evaluation of the validity of the DOHM.

Method
The DOHM was completed by 163 community dwelling older adults and people with disabilities. The Rasch measurement model was used to evaluate three aspects of construct validity: rating scale structure, unidimensionality and targeting.

Results
The five-point DOHM rating scale function was evaluated using Linacre's (2002) guidelines. The middle rating category did not function well, and this resulted in collapsing the rating scale from five to four points. The unidimensionality of the DOHM's subscales was supported by Rasch-based principal component analysis and item fit analysis. However, hierarchical results of item difficulties revealed significant gaps in each of the DOHM's subscales, indicating that more items will be needed to capture the full range of participant's experiences of home.

Conclusion
The DOHM was developed to provide a relevant evaluation tool for home modification practice which comprehensively measures the home environment. This study identified preliminary validity of this tool, with revision and further psychometric validation required.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Health and Rehabilitation Sciences Publications
 
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Created: Tue, 31 May 2016, 20:26:42 EST by Dr Tammy Cochrane on behalf of School of Health & Rehabilitation Sciences