From: Two-stage optimal designs with survival endpoint when the follow-up time is restricted
Minimax design | Optimal design | ||||
---|---|---|---|---|---|
Power | θ | TIE | Power | TIE | Power |
90% | 15 | 0.040 (0.036,0.044) | 0.907 (0.901,0.913) | 0.037 (0.033,0.041) | 0.903 (0.898,0.909) |
95% | 15 | 0.041 (0.037,0.045) | 0.957 (0.953,0.961) | 0.038 (0.035,0.042) | 0.955 (0.951,0.959) |
90% | 30 | 0.040 (0.037,0.044) | 0.911 (0.905,0.916) | 0.039 (0.035,0.043) | 0.910 (0.904,0.916) |
95% | 30 | 0.042 (0.038,0.046) | 0.959 (0.955,0.963) | 0.040 (0.036,0.044) | 0.958 (0.954,0.962) |
90% | 50 | 0.041 (0.037,0.045) | 0.911 (0.905,0.916) | 0.040 (0.037,0.044) | 0.909 (0.903,0.914) |
95% | 50 | 0.042 (0.038,0.046) | 0.960 (0.956,0.963) | 0.041 (0.037,0.045) | 0.959 (0.955,0.963) |