Erratum to: “Youden’s Index and the Likelihood Ratio Positive in Diagnostic Testing”

Unfortunately, the letter “Youden’s Index and the Likelihood Ratio Positive in Diagnostic Testing“ by D. Böhning contained an error. It contained the wrong Figure 4. The correct Figure is now supplied here. D. Böhning sent us this statement: “I am grateful to Professor Hughes for pointing this out. There was no intention with my own letter to be critical on the letter by Professor Hughes or dispute its results but rather to add some thoughts of my own to the subject of interest.“ Log-likelihood positive as a function of a cut-off value c for two normal distributions with equal unit variance and mean difference of 2