Table 1
Number of Various Types of PHI Misclassified as Non-PHI by MedLEE and Retained in Output
| PHI Type | Instances of PHI in the Notes | Instances of PHI Allowed into Output | Proportion of PHI that Leaked Through |
| Age >89 | 7 | 5 | 71% |
| Clinician | 157 | 6 | 3.8% |
| Date | 300 | 0 | 0.0% |
| Hospital | 100 | 7 | 7.0% |
| Location | 45 | 3 | 6.7% |
| Patient | 126 | 4 | 3.2% |
| Telephone | 33 | 1 | 3.0% |
| Identifiers | 41 | 0 | 0.0% |
| Total | 809 | 26 | 3.2% |
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PHI = protected health informaion.
