Table 4.
Summary statistics for the hybrid design, greedy design, and non-adaptive balanced allocation, for the (3-dose, 2-schedule) trial. The “balanced” method assigns 12 patients to each (schedule, dose) pair and does only one posterior computation, at the end of the trial. The number in parentheses after each Rselect is the percentage of times the trial is stopped with no (schedule, dose) selected. Because scenarios 7 (too toxic) and 8 (too inefficacious) have no acceptable treatments, the Rselect values are less relevant and thus are shown with a gray background.
Scenario | Hybrid | Greedy | Balanced | |||
---|---|---|---|---|---|---|
Rselect | Rtreat | Rselect | Rtreat | Rselect | Rtreat | |
|
|
|
|
|||
1 | 0.82 (1) | 0.54 | 0.78 (1) | 0.45 | 0.85 (0) | 0.50 |
2 | 0.85 (1) | 0.75 | 0.85 (1) | 0.84 | 0.85 (0) | 0.51 |
3 | 0.81 (1) | 0.54 | 0.78 (1) | 0.48 | 0.83 (0) | 0.50 |
4 | 0.80 (1) | 0.69 | 0.80 (0) | 0.77 | 0.80 (0) | 0.51 |
5 | 0.74 (1) | 0.54 | 0.65 (1) | 0.48 | 0.77 (0) | 0.40 |
6 | 0.76 (2) | 0.62 | 0.75 (3) | 0.62 | 0.77 (0) | 0.55 |
7 | 0.87 (100) | 0.81 | 1.00 (100) | 0.83 | 0.94 (98) | 0.50 |
8 | 0.54 (96) | 0.54 | 0.54 (96) | 0.59 | 0.35 (72) | 0.50 |