Table 1

Demographic and clinical variables of the sample and their differences between groups^*

Characteristic	Group; mean ± SD			Group comparison

	Control	Acute anorexia nervosa	Recovered anorexia nervosa	F(p)	Post hoc
Age, yr	18.6 ± 4.5	16.1 ± 3.1	22.2 ± 3.8	< 0.001	Control > acute^† Control < recovered^† Acute < recovered^†
BMI, kg/m²	20.9 ± 2.2	14.6 ± 1.4	20.6 ± 1.6	< 0.001	Control > acute^† Acute < recovered^†
BMI-SDS	−0.14 ± 0.65	−3.19 ± 1.16	−0.54 ± 0.58	< 0.001	Control > acute^† Control > recovered^‡ Acute < recovered^†
SES (ISCO)	162 ± 366	172 ± 376	138 ± 345	0.89	NA
BDI-II score	4.5 ± 5.0	23.4 ± 10.4	8.8 ± 7.9	< 0.001	Control < acute^† Control < recovered^‡ Acute < recovered^†
EDI-2 score	139 ± 27	212 ± 43	176 ± 50	< 0.001	Control < acute^† Control < recovered^† Acute < recovered^†
Ghrelin, pg/mL	259 ± 121	417 ± 181	341 ± 162	< 0.001	Control < acute^† Control < recovered^‡

BDI-II = Beck Depression Inventory II; BMI = body mass index; BMI-SDS = body mass index standard deviation score; EDI-2 = Eating Disorder Inventory 2; ISCO = International Standard Classification of Occupations; NA = not applicable; SD = standard deviation; SES = socioeconomic status.
↵* Descriptive statistics and results of 1-way ANOVA and post hoc t tests (Bonferroni corrected for multiple comparisons). Of the patients with acute anorexia nervosa, 14 (14.9%) had an associated psychiatric comorbidity (4 depressive disorder, 4 obsessive compulsive disorder, 2 anxiety disorder, 6 other disorder; Appendix 1). Of the patients recovered from anorexia nervosa, 10 (27%) had an associated psychiatric comorbidity at the time of treatment (6 depressive disorder, 1 obsessive compulsive disorder, 3 anxiety disorder, 4 other disorder; Appendix 1). Additional characteristics can be found in Appendix 1, Table S1.
↵† p < 0.001.
↵‡ p < 0.05.