| MEASUREMENT PROPERTIES | |
| Limitations | <5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Tested |
| Cronbach's (Describe) |
Internal consistency was high for all dimensions of the Mini-OAKHQOL |
| B. Reliability intraobserver or test-retest | Tested |
| Continuous scores: intraclass correlation coefficient (ICC) Dichotomus: Cohen kappa (Describe) |
Reproducibility was moderate for the social support and social functioning dimensions and was excellent for the other three dimensions |
| 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) |
Documented in the original publication, as it followed guidelines and all required steps for shortening while preserving content along the process, both in choice by patients, experts and informed by statistical metric properties. |
| B. Construct Validity: Structural validity |
Tested |
| Hypotheses-testing | Tested |
| Cross-cultural validity | Tested |
| Brief Description |
Findings for the shortened physical activities dimension were satisfactory: the scale was unidimensional (total-item chi-square test for item-trait interaction, p=0.40, all item fit tests were non-significant after Bonferroni correction) and not affected by DIF for any item. Conversely, the analysis of the mental health showed a lack of fit to the partial credit model (total-item chi-square test for item-trait interaction, p = 0.0002) and two items with significant DIF for age and gender. |
| C. Criterion validity | Not Tested |
| Comparison with a 'gold standard' Continuous scores: correlations, ROC curves Dichotomus: Sensitivity & Specificity (Describe) |
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