Table 4.
Version 2 knowledge exam item difficulty and discrimination
| Item # | Content domain | Item Difficulty | Item Discrimination |
|---|---|---|---|
| 1. | Critical evaluation of harm studies | 0.50 | 0.25 |
| 2. | Critical evaluation of systematic reviews/guidelines | 0.36 | 0.16 |
| 3. | Overview of clinical biostatistics | 0.81 | 0.30 |
| 4. | Critical evaluation of therapy articles | 0.80 | 0.35 |
| 5. | Critical evaluation of systematic reviews/guidelines | 0.58 | 0.46 |
| 6. | Critical evaluation of systematic reviews/guidelines | 0.79 | 0.07 |
| 7. | Critical evaluation of diagnostic studies (Rev of Q17) | 0.43 | 0.18 |
| 8. | Overview of clinical biostatistics | 0.41 | 0.24 |
| 9. | Critical evaluation of prognosis studies | 0.66 | 0.31 |
| 10. | Critical evaluation of systematic reviews/guidelines (Rev of Q14) | 0.50 | 0.29 |
| 11. | Critical evaluation of harm studies | 0.29 | −0.10 |
| 12. | Critical evaluation of therapy articles | 0.54 | 0.37 |
| 13. | Critical evaluation of diagnostic studies (Rev of Q16) | 0.24 | 0.36 |
| 14. | Critical evaluation of diagnostic studies | 0.64 | 0.19 |
| 15. | Critical evaluation of therapy articles (Rev of Q19) | 0.51 | 0.52 |
| 16. | Critical evaluation of therapy articles | 0.56 | 0.53 |
| 17. | Overview of clinical biostatistics | 0.43 | 0.51 |
| 18. | Overview of clinical biostatistics | 0.58 | 0.22 |
| 19. | Critical evaluation of preventive studies | 0.66 | 0.10 |
| 20. | Critical evaluation of preventive studies | 0.38 | 0.41 |
| 21. | Research study design and validity overview | 0.70 | 0.24 |
| 22. | Critical evaluation of diagnostic studies (v1 Q8) | 0.54 | 0.23 |
| 23. | Critical evaluation of diagnostic studies (Rev of Q9) | 0.26 | 0.19 |
| 24. | Overview of clinical biostatistics (Rev of Q10) | 0.61 | 0.32 |
| 25. | Critical evaluation of therapy articles (Rev of Q3) | 0.18 | 0.07 |
| 26. | Research study design and validity overview (Rev of Q6) | 0.41 | 0.23 |
| 27. | Research study design and validity overview | 0.66 | 0.44 |
| 28. | Critical evaluation of diagnostic studies | 0.54 | 0.40 |
| 29. | Research study design and validity overview (v1 Q4) | 0.79 | 0.27 |
| 30. | Critical evaluation of systematic reviews/guidelines (Rev of Q15) | 0.54 | 0.38 |
| 31. | EBP overview and clinical application | 0.96 | 0.11 |
| 32. | Asking answerable questions, finding evidence (Rev of Q5) | 0.84 | 0.28 |
| 33. | EBP overview and clinical application (Rev of Q18) | 0.86 | 0.21 |
| 34. | Critical evaluation of diagnostic studies (Rev of Q11) | 0.17 | 0.24 |
| 35. | Asking answerable questions, finding evidence (v1 Q2) | 0.93 | 0.12 |
| 36. | Research study design and validity overview (Rev of Q13) | 0.58 | 0.12 |
| 37. | Asking answerable questions, finding evidence (Rev of Q7) | 0.63 | 0.38 |
| 38. | Asking answerable questions, finding evidence | 0.04 | 0.06 |
| 39. | Asking answerable questions, finding evidence | 0.32 | 0.18 |
| 40. | Overview of clinical biostatistics (Rev of Q12) | 0.37 | 0.18 |
Note: Parentheticals indicates the item number from an unchanged item of Version 1 (v1) or revised item from Version 1 (Rev of). Items without parentheticals are new items not present in the Version 1.