Table 2.
Number of case reports with different scores for the five domains of Pierson-5 scale.
| Domain/score | 0 | 1 | 2 |
| Documentation | 3 | 9 | 42 |
| Uniqueness | 12 | 23 | 19 |
| Educational value | 3 | 29 | 22 |
| Objectivity | 1 | 19 | 34 |
| Interpretation | 1 | 8 | 45 |
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