Abstract
Methods
A sample of 153 individuals with disabling conditions was selected through systematic random sampling. The following psychometric
properties were tested: structural validity (explanatory and confirmatory factor analyses), internal consistency, inter-tester
reliability, construct validity and floor and ceiling effects.
properties were tested: structural validity (explanatory and confirmatory factor analyses), internal consistency, inter-tester
reliability, construct validity and floor and ceiling effects.
Results
The explanatory factor analysis indicated a two-factor structure (‘work-related participation’ and ‘general participation’).
The confirmatory factor analysis suggested good model fit. The internal consistency measured with Cronbach’s alpha was 0.93
for the whole scale and 0.78 and 0.93 for the subscales. The inter-tester reliability coefficient was 0.90. All hypothesized
correlations were as expected confirming the construct validity of the scale. No floor or ceiling effects were identified
for the whole scale; only the subscale ‘work-related participation’ showed a ceiling effect.
The confirmatory factor analysis suggested good model fit. The internal consistency measured with Cronbach’s alpha was 0.93
for the whole scale and 0.78 and 0.93 for the subscales. The inter-tester reliability coefficient was 0.90. All hypothesized
correlations were as expected confirming the construct validity of the scale. No floor or ceiling effects were identified
for the whole scale; only the subscale ‘work-related participation’ showed a ceiling effect.
- Content Type Journal Article
- Pages 1-8
- DOI 10.1007/s11136-012-0116-8
- Authors
- S. A. M. Stevelink, Athena Institute for Research on Innovation and Communication in Health and Life Sciences, Faculty of Earth and Life Sciences, VU University Amsterdam, Amsterdam, The Netherlands
- C. B. Terwee, Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, The Netherlands
- N. Banstola, Netherlands Leprosy Relief, Biratnagar, Nepal
- W. H. van Brakel, Athena Institute for Research on Innovation and Communication in Health and Life Sciences, Faculty of Earth and Life Sciences, VU University Amsterdam, Amsterdam, The Netherlands
- Journal Quality of Life Research
- Online ISSN 1573-2649
- Print ISSN 0962-9343