| MEASUREMENT PROPERTIES | |
| Limitations | <5 European languages (English) |
| Observations | |
| 1. RELIABILITY | |
| A. Internal Consistency | Tested |
| Cronbach's (Describe) |
Cronbach's alpha: 0.89 |
| 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) |
Review of existing scales Pilot interviews Development of preliminary questions Systematic evaluation and refinement of questions by experts (incl. cognitive debriefing interviews and full-scale pilot interviews) |
| B. Construct Validity: Structural validity |
Tested |
| Hypotheses-testing | Tested |
| Cross-cultural validity | Not Tested |
| Brief Description |
Pearson correlations between two scales that workers rated regarding their typical work performance and then separately rated their performance over the past 30 days, were in the range 0.5 to 0.7 across all HPQ surveys. |
| C. Criterion validity | Tested |
| Comparison with a 'gold standard' Continuous scores: correlations, ROC curves Dichotomus: Sensitivity & Specificity (Describe) |
Several studies show that the HPQ assessment of absenteeism has good validity. These studies compared HPQ self-reports with employer payroll records in multiple occupations. Pearson correlation (with self-report and payroll data): 7-day recall: 0.61-0.81 28-day recall: 0.66-0.71 |