Developing an Item Bank to Measure Economic Quality of Life for Individuals With Disabilities

作者：Tulsky David S; Kisala Pamela A; Lai Jin Shei; Carlozzi Noelle; Hammel Joy; Heinemann Allen W

来源：Archives of Physical Medicine and Rehabilitation, 2015, 96(4): 604-613.

DOI：10.1016/j.apmr.2014.02.030

• Economics
• Outcome assessment (health care)
• Psychometrics
• Quality of life
• Rehabilitation

Objective: To develop and evaluate the psychometric properties of an item set measuring economic quality of life (QOL) for use by individuals with disabilities.
Design: Survey.
Setting: Community settings.
Participants: Individuals with disabilities completed individual interviews (n=64), participated in focus groups (n=172), and completed cognitive interviews (n=15). Inclusion criteria included the following: traumatic brain injury, spinal cord injury, or stroke; age >= 18 years; and ability to read and speak English. We calibrated the items with 305 former rehabilitation inpatients.
Interventions: None.
Main Outcome Measure: Economic QOL.
Results: Confirmatory factor analysis showed acceptable fit indices (comparative fit index=.939, root mean square error of approximation=.089) for the 37 items. However, 3 items demonstrated local item dependence. Dropping 9 items improved fit and obviated local dependence. Rasch analysis of the remaining 28 items yielded a person reliability of .92, suggesting that these items discriminate about 4 economic QOL levels.
Conclusions: We developed a 28-item bank that measures economic aspects of QOL. Preliminary confirmatory factor analysis and Rasch analysis results support the psychometric properties of this new measure. It fills a gap in health-related QOL measurement by describing the economic barriers and facilitators of community participation. Future development will make the item bank available as a computer adaptive test.

• 出版日期2015-4
• 单位西北大学