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The BrQ domains and the results of tests of item convergent validity, item consistency reliability and floor and ceiling effects for each domain of the BrQ |
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| BrQ Domains |
Number of items |
Item convergent validitya |
Internal consistency reliabilityb |
Floor effectsc |
Ceiling effectsd |
|
|
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| General health perception |
2 |
100% |
0.72 |
0 (0.0%) |
1 (3.6%) |
| Physical functioning |
7 |
100% |
0.80 |
0 (0.0%) |
0 (0.0%) |
| Emotional functioning |
5 |
100% |
0.77 |
0 (0.0%) |
0 (0.0%) |
| Self esteem and aesthetics |
2 |
100% |
0.88 |
0 (0.0%) |
0 (0.0%) |
| Vitality |
2 |
100% |
0.84 |
0 (0.0%) |
0 (0.0%) |
| School activity |
3 |
100% |
0.82 |
0 (0.0%) |
3 (10.7%) |
| Bodily pain |
6 |
100% |
0.85 |
0 (0.0%) |
2 (7.1%) |
| Social functioning |
7 |
100% |
0.88 |
0 (0.0%) |
3 (10.7%) |
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a Percentage of item-scale correlations ≥ 0.40. b Cronbach's alpha coefficient c Percentage of respondents with minimum scale scores d Percentage of respondents with maximum scale scores | |||||
Vasiliadis et al. Scoliosis 2006 1:7 doi:10.1186/1748-7161-1-7 |
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