Correction to: Purging behaviors relate to impaired subjective sleep quality in female patients with anorexia nervosa: a prospective observational study.

[This corrects the article DOI: 10.1186/s13030-017-0107-7.].

Correction

After publication of the original article [1], the authors reported an error to Table 2.

Table 2

Spearman’s rank correlation analysis of global sleep quality (global PSQI-J)

Variables	ρ	P
Diagnosis of ANbp	0.525	0.017*
Age	0.345	0.136
Body mass index	0.168	0.479
Duration of illness	0.536	0.015*
Current menstruation	0.281	0.230
Use of sedative drugs	0.332	0.152
CES-D	0.318	0.172
Vomiting	0.561	0.010*
Chewing	-0.061	0.798
Laxative overuse	0.407	0.075
Uretic misuse	0.280	0.232

ANbp anorexia nervosa binge-eating/purging type; CES-D Center for Epidemiologic Studies Depression, PSQI-J Japanese version of the Pittsburgh Sleep Quality Index; ρ Spearman’s correlation coefficient

*P < 0.05

The title for the right-hand column of Table 2 was incorrectly included as “ρ” when it should have been “P”. The correct version of Table 2 is included in this Correction.