Skip to main content

# Erratum to: Statistical methodology for age-adjustment of the GH-2000 score detecting growth hormone misuse

The Original Article was published on 28 October 2016

## Erratum

After publication of the original article , it came to the authors’ attention that there was an error affecting equation (7). A correction to this equation was submitted by the authors during proofing, but was not implemented correctly by the Production team.

The correct version of equation (7) is as follows:

$$\begin{array}{l}\widehat{\beta^{*}}=\frac{\sum_{i=1}^n\left({Y}_i^{*}-\overline{Y*}\right)\left({x}_i-\overline{x}\right)}}{\sum_{i=1}^n{\left({x}_i-\overline{x}\right)}^2}}=\frac{\sum_{i=1}^n\left({Y}_i-\widehat{\beta}{x}_i-\left(\overline{Y}-\widehat{\beta}\overline{x}\right)\right)}\left({x}_i-\overline{x}\right)}{\sum_{i=1}^n{\left({x}_i-\overline{x}\right)}^2}}\\ {}\kern2.5em =\frac{\sum_{i=1}^n\Big({Y}_i-\overline{Y}}\left)\left({x}_i-\overline{x}\right)-\widehat{\beta}\sum_{i=1}^n\Big({x}_i-\overline{x}}\right){}^2}{\sum_{i=1}^n{\left({x}_i-\overline{x}\right)}^2}}\\ {}\kern2.5em =\frac{\sum_{i=1}^n\Big({Y}_i-}\overline{Y}\Big)\left({x}_i-\overline{x}\right)}{\sum_{i=1}^n{\left({x}_i-\overline{x}\right)}^2}}-\widehat{\beta}\frac{\sum_{i=1}^n\Big(}{x}_i-\overline{x}\Big){}^2}{\sum_{i=1}^n{\left({x}_i-\overline{x}\right)}^2}}=0.\end{array}$$
(7)

Equation (7) has also been updated in the original article in order to rectify this publisher’s error.

## Reference

1. 1.

Böhning D, Böhning W, Guha N, Cowan DA, Sönksen PH, Holt RI. Statistical methodology for age-adjustment of the GH-2000 score detecting growth hormone misuse. BMC Med Res Methodol. 2016;16:147. doi:10.1186/s12874-016-0246-8.

Download references

## Author information

Authors

### Corresponding author

Correspondence to Dankmar Böhning.

## Additional information

The online version of the original article can be found under doi:10.1186/s12874-016-0246-8.

## Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

Reprints and Permissions 