| MEASUREMENT PROPERTIES | |
| Limitations | >=5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Tested |
| Cronbach's (Describe) |
PROMIS-PPI coefficients ranges from acceptable to high (α = 0.68- 0.90) and the PROMIS Anxiety and Depression scale coefficients as high (α = 0.85-0.91 for the PROMIS Anxiety scale; α = 0.85-0.94 for the PROMIS Depression scale) |
| B. Reliability intraobserver or test-retest | Not Tested |
| Continuous scores: intraclass correlation coefficient (ICC) Dichotomus: Cohen kappa (Describe) |
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| C. Reliability interobserver or Measurement error | Not Tested |
| Standard error of measurement (SEM), smallest detectable change (SDC) or Limits of agreement (LoA) (Describe) |
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| 2. VALIDITY | |
| A. Content validity: face validity | Tested |
| Expert opinion (relevance and comprehensiveness) (Describe) |
PROMIS-PPI scores differ between children with rheumatic diseases who demonstrate higher degrees of school-related impairment. Also, the PROMIS Anxiety scale differentiates between children with sickle cell disease who had and had not received home treatment for pain |
| B. Construct Validity: Structural validity |
Tested |
| Hypotheses-testing | Tested |
| Cross-cultural validity | Not Tested |
| Brief Description | |
| C. Criterion validity | Not Tested |
| Comparison with a 'gold standard' Continuous scores: correlations, ROC curves Dichotomus: Sensitivity & Specificity (Describe) |
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