Table 4. Number of gold standard events detected by the systems.
| Not detected | Detected by | |||||||
| 1 system | 2 systems | 3 systems | 4 systems | 5 systems | 6 systems | 7 systems | ||
| n | 2 | 6 | 3 | 1 | 2 | 8 | 5 | 2 |
| % | 7% | 21% | 10% | 3% | 7% | 28% | 17% | 7% |
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