| MEASUREMENT PROPERTIES | |
| Limitations | <5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Tested |
| Cronbach's (Describe) |
Correlation coefficient 0.89 to0.91 |
| B. Reliability intraobserver or test-retest | Tested |
| Continuous scores: intraclass correlation coefficient (ICC) Dichotomus: Cohen kappa (Describe) |
Reliability coefficient 0.97 with 15 patients and 13 health subjects |
| C. Reliability interobserver or Measurement error | Not Tested |
| Standard error of measurement (SEM), smallest detectable change (SDC) or Limits of agreement (LoA) (Describe) |
|
| 2. VALIDITY | |
| A. Content validity: face validity | Not Tested |
| Expert opinion (relevance and comprehensiveness) (Describe) |
Authors said yes but I didn’t find details in original paper |
| B. Construct Validity: Structural validity |
Tested |
| Hypotheses-testing | Not Tested |
| Cross-cultural validity | Tested |
| Brief Description |
Indicated by factor structure analysis in addition to the significant correlations between items ‘scores and the percentages of each category n the Dallas questionnaire |
| C. Criterion validity | Tested |
| Comparison with a 'gold standard' Continuous scores: correlations, ROC curves Dichotomus: Sensitivity & Specificity (Describe) |
Pain is correlated with daily and work-leisure activities, anxiety-depression, and social interest Schober index wasn’t correlated with Dallas Correlation between psychological variables of the Dallas questionnaire and five clinical scales of the MMPI Correlation negative between functional capacities (physical demands characteristics of work) and aspects of the Dallas questionnaire (daily and work-leisure activities) |