| MEASUREMENT PROPERTIES | |
| Limitations | <5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Not Tested |
| Cronbach's (Describe) | |
| B. Reliability intraobserver or test-retest | Tested |
| Continuous scores: intraclass correlation coefficient (ICC) Dichotomus: Cohen kappa (Describe) |
Good test-retest reliability in adults with work-disability and general adult samples: ICC Basic Mobility: r = 0.86; Upper Body Function: r = 0.84; Fine Motor Function: r = 0.76; Driving: 0.66; Public Transportation: r = 0.75; Wheelchair: r = 0.73 |
| C. Reliability interobserver or Measurement error | Tested |
| Standard error of measurement (SEM), smallest detectable change (SDC) or Limits of agreement (LoA) (Describe) |
The SEM ranged from 3.25 to 4.55 for the Physical Function scales. The MDC90 ranged from 7.58 to 16.27 |
| 2. VALIDITY | |
| A. Content validity: face validity | Tested |
| Expert opinion (relevance and comprehensiveness) (Describe) |
It was considered efficient; Low respondent burden and selects questions most relevant to the respondent |
| B. Construct Validity: Structural validity |
Tested |
| Hypotheses-testing | Tested |
| Cross-cultural validity | Not Tested |
| Brief Description |
The final item pool consisted of 139 items. Initial factor analyses revealed a 4-factor solution, which included more items and allowed separate characterization of: (1) changing and maintaining body position, (2) whole body mobility, (3) upper body function, and (4) upper extremity fine motor. The final 4-factor model included 91 items. Confirmatory factor analyses for the 4-factor models for the claimant and the normative samples demonstrated very good fit. Comparative Fit Index=.93 and .98; Tucker-Lewis Index=.92 and .98. |
| C. Criterion validity | Tested |
| Comparison with a 'gold standard' Continuous scores: correlations, ROC curves Dichotomus: Sensitivity & Specificity (Describe) |
Although there is not a "gold standard" for criterion validity, correlations with legacy measures were moderate to strong. |