Type of safety decision rule | Â | Simulation scenario | ||
---|---|---|---|---|
 | Vaccine safe (Psafe = 0.95) | Vaccine unsafe (Psafe = 0.7) | ||
 | Probability of stopping | Probability of stopping | Participant number at stop (median; IQR) | |
Fixed-sample frequentist rule at n = 19 | 0.07 | 0.95 | 19 | (19-19)a |
Continuous Bayesian monitoring | 0.05 | 0.96 | 8 | (4-12) |