| MEASUREMENT PROPERTIES | |
| Limitations | >=5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Tested |
| Cronbach's (Describe) |
Cronbach's alpha ranged from 0.70-0.90 for the different subscales. |
| B. Reliability intraobserver or test-retest | Tested |
| Continuous scores: intraclass correlation coefficient (ICC) Dichotomus: Cohen kappa (Describe) |
ICC for pain severity 0.71-0.77 |
| C. Reliability interobserver or Measurement error | Tested |
| Standard error of measurement (SEM), smallest detectable change (SDC) or Limits of agreement (LoA) (Describe) |
SEM for pain severity 0.587 |
| 2. VALIDITY | |
| A. Content validity: face validity | Tested |
| Expert opinion (relevance and comprehensiveness) (Describe) |
It was established through seven experts, with nonginigicant Kendall's coefficient, meaning that there is no statistically significant difference between the expert opinions of each item. |
| B. Construct Validity: Structural validity |
Tested |
| Hypotheses-testing | Tested |
| Cross-cultural validity | Not Tested |
| Brief Description |
The validity of the WHYMPI has been supported by the results of confirmatory and exploratory factor analytic procedures. Structural vaidity of each section of the WHYMPI was assesed with PFA. Section 1 yielded 4 factors with an eigenvalue greater than 1, which accounted for 69.6 % of total variance. Section 2 yielded 3 factors with an eigenvalue greater than 1, which accounted for 62.7 % of total variance. Section 3 yielded 3 factors with an eigenvalue greater than 1, which accounted for 54 % of total variance. |
| C. Criterion validity | Not Tested |
| Comparison with a 'gold standard' Continuous scores: correlations, ROC curves Dichotomus: Sensitivity & Specificity (Describe) |
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