Correction: BMC Med Res Methodol 24, 124 (2024)

https://doi.org/10.1186/s12874-024-02247-w


Following publication of the original article [1], the authors reported an error found on page 4 and replacement of Fig. 2.

  1. 1)

    On page 4, the following text “\sigma _{\hat{\theta}_{jk}}” should be replaced with \({\sigma }_{{\widehat{\theta }}_{jk}}\).

  2. 2)

    On page 4, the “ψ_jk = 1” should be replaced with \({\psi }_{jk}=1\).

  3. 3)

    In Fig. 2, the title of the two bottom graphs, “a-1” and “b-1” should be replaced with “a-2” and “b-2”, respectively. The revised version of Fig. 2 is shown below.

Fig. 2
figure 1

FWER (left) and overall power (right) by the timing of the treatment selection at stage 1 (top) and stage 2 (bottom) and subset selection rule for a three-stage design. The overall power is calculated when one research arm is effective with the target effect size. The X-axis is control arm information time in all graphs

Full size image

The original article [1] has been updated.