Correction to: BMC Med Res Methodol (2019) 19:205

https://doi.org/10.1186/s12874-019-0852-3

In the original publication of this article [1] the author Marc Du Bois was omitted. In this correction article the author and the corresponding details are provided. The publisher apologizes to the readers and authors for the inconvenience.

The original publication has been corrected.