The following regards “Linear-rank testing of a non-binary, responder-analysis, efficacy score to evaluate pharmacotherapies for substance use disorders” published in Statistical Methods in Medical Research, 2018, Vol. 27(7), pp. 2154–2167. Our study employed the van der Waerden test and van der Waerden scores but failed to provide the following attribution under References.
van der Waerden BL. Order Tests. In: Mathematical Statistics. Die Grundlehren der mathematischen Wissenschaften (in Einzeldarstellungen mit besonderer Berücksichtigung der Anwendungsgebiete), vol 156. Berlin, Heidelberg: Springer, 1969, pp. 292–298.
We apologize for this accidental error of omission and for any inconveniences caused.
In addition, SAGE Publishing would like to notify readers that on page 2157 the variable was accidently removed by the publisher from the sentence “An interesting property of is that nearly all non-zero NOBWOS scores are confined to intervals along the upper boundary of its domain, represented, for example, by the partitions of the solid and dashed diagonal line of Figure 1, running from coordinates {0,84} to {84,0} and subtending the various regions for W ∈ {1,2,…,9}.