Table 2.
Questionnaires used to measure rheumatologist-level determinants
| Determinant | Questionnaire | Number of scales | Score range |
|---|---|---|---|
| Cognitive bias | Inventory for Cognitive Bias in Medicine (ICBM)17 | 1 | 0–22 (higher scores indicating less cognitive bias) |
| Personality | Big Five Inventory (BFI; Dutch version)19 | 5 (extraversion, neuroticism, openness, conscientiousness and agreeableness) | 1–5 on every subscale (higher scores indicating a stronger personality trait on the specific subscale) |
| Thinking styles | Rational Experiential Inventory (REI; Dutch version)18 | 2 (rationality and experientality) | 20–100 on every subscale (higher scores indicating a more rational/experiential thinking style) |
| Numeracy | Berlin Numeracy Test (BNT; Dutch version)20 | 1 | 0–7 (a higher score indicating a higher level of numeracy) |
| Knowledge | Self-developed questionnaire | 2 (general and specific knowledge) | General knowledge: 0–10. Specific knowledge: −5.2–10* (higher scores indicating more guideline knowledge) |
| Guideline agreement | Self-developed statements | 2 (general and specific agreement with the guideline) | 1–5 on every subscale (a higher score indicating a higher level of agreement) |
| Outcome expectancy | Self-developed statement | 1 | 1–5 (a higher score indicating a higher level of outcome expectancy) |
*Negative scores possible due to correction for guessing.