Erratum to: Combination of anxiety and depression is associated with an increased headache frequency in migraineurs: a population-based study

Erratum

After publication of the original article [1], the authors noticed that the article contained some errors in the data presented within Table 1, Figs. 1 and 2, and Tables 2 and 3.

Fig. 1

Flow chart depicting the participation of subjects in the Korean Headache-Sleep Study

Fig. 2

Venn diagram for distribution of subjects with anxiety, depression and migraine

Table 1 Sociodemographic distribution of all survey participants, the total Korean population, and of cases identified as migraine, anxiety and depression

Table 2 Demographics, headache characteristics and associated symptoms of migraineurs according to anxiety and depression

Table 3 Frequency, severity and impact of headache according to migraineurs’ anxiety and depression status

The corrected versions are given in this erratum. The main findings of the original article are not affected after this correction. The authors apologise for any inconvenience this has caused.