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Probability of observing no events, one or more events and two or more events for a range of hypothetical true event rates
| True event rate (%) | Number of participants | No events | One or more events | Two or more events |
| 5 | 4 | 0.81 | 0.19 | 0.01 |
| 10 | 4 | 0.66 | 0.34 | 0.05 |
| 20 | 4 | 0.41 | 0.59 | 0.18 |
| 30 | 4 | 0.24 | 0.76 | 0.35 |
