| MEASUREMENT PROPERTIES | |
| Limitations | >=5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Tested |
| Cronbach's (Describe) |
Internal consistency (Cronbach’s α) in the original study of 213 patients undergoing surgical reconstruction of lateral ankle ligaments for each subscale was as follows: pain, 0.94; other symptoms, 0.88; activities of daily living, 0.97; sport and recreation, 0.94; and quality of life, 0.92. Subsequent studies have reported similar findings regarding pain (0.81‐0.96), activities of daily living (0.88‐0.97) and sport and recreation (0.79‐0.96), although internal consistency is generally lower for other symptoms (0.39‐0.86) and quality of life (0.62‐0.91) |
| B. Reliability intraobserver or test-retest | Tested |
| Continuous scores: intraclass correlation coefficient (ICC) Dichotomus: Cohen kappa (Describe) |
Test‐retest reliability (intraclass correlation coefficients) over a 30‐day period in 38 patients from the original study was as follows: pain, 0.78; other symptoms, 0.86; activities of daily living, 0.70; sport and recreation, 0.85; and quality of life, 0.92 . Subsequent studies have reported similarly high test‐retest reliability for pain (0.76‐0.97), other symptoms (0.63‐0.96), activities of daily living (0.70‐0.99), sport and recreation (0.68‐0.99) and quality of life (0.70‐0.99) |
| 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) |
Content validity was originally examined by asking patients to rate the relevance and importance of each item on a scale of 1 to 3 and to suggest additional items. All items had a mean relevance score above 2.0, and no other items were suggested |
| B. Construct Validity: Structural validity |
Not Tested |
| Hypotheses-testing | Tested |
| Cross-cultural validity | 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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