Table 3.
CHIEF information extraction results with partial matches (with 0.95 binomial exact confidence intervals)
| Information extracted | N | Recall | Precision | F1-measure |
|---|---|---|---|---|
| Mentions of LVEF | 2276 | 0.986 (0.980–0.990) | 0.994 (0.990–0.997) | 0.990 |
| LVEF quantitative values | 2200 | 0.945 (0.934–0.954) | 0.976 (0.968–0.982) | 0.960 |
| ACEI medications | 2949 | 0.996 (0.993–0.998) | 0.978 (0.972–0.983) | 0.987 |
| ARB medications | 591 | 0.997 (0.988–1.000) | 0.978 (0.963–0.988) | 0.987 |
| Reasons not to take ACEI/ARB | 483 | 0.404 (0.360–0.449) | 0.321 (0.284–0.359) | 0.358 |
| Overall (micro-average) | 8499 | 0.946 (0.941–0.951) | 0.935 (0.930–0.940) | 0.940 |