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Correction to: Optimality criteria for futility stopping boundaries for group sequential designs with a continuous endpoint
BMC Medical Research Methodology volume 20, Article number: 280 (2020)
Correction to: BMC Med Res Methodol 20, 274 (2020)
Following publication of the article , it was noted that due to a typesetting error the old version of Fig. 1 is displayed with the correct version of Fig. 1, and it should be deleted.
The correct Fig. 1 and caption have been included in this correction, and the original article has been corrected.
Li X, et al. Optimality criteria for futility stopping boundaries for group sequential designs with a continuous endpoint. BMC Med Res Methodol. 2020;20:274.
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Li, X., Herrmann, C. & Rauch, G. Correction to: Optimality criteria for futility stopping boundaries for group sequential designs with a continuous endpoint. BMC Med Res Methodol 20, 280 (2020). https://doi.org/10.1186/s12874-020-01161-1