Table 1 Anthropometric characteristics and symptom scores of the study groups.

		acAN_T1	acAN_T2	recAN_OCP⁻	HC_OCP⁻	recAN_OCP⁺	HC_OCP⁺
Group		1	2	3	4	5	6
N		79	79	35	79	45	41
Age (years)		15.73 ± 0.22	15.97 ± 0.022	22.57 ± 0.65	16.20 ± 0.32	22.22 ± 0.48	21.72 ± 0.55
Age (years)	P	2, 3, 5, 6	1	1, 4	3, 6	1	1, 4
Age onset AN		14.09 ± 0.21	14.09 ± 0.21	14.85 ± 0.48		14.53 ± 0.28
Days of treatment		110.4 ± 2.73
Months since recovery				53.6 ± 7.4		53.5 ± 5.5
BMI (kg/m²)		14.90 ± 0.14	19.04 ± 0.13	21.14 ± 0.32	20.61 ± 0.26	21.23 ± 0.30	21.69 ± 0.37
BMI (kg/m²)	P	2, 3, 4, 5, 6	1, 4	1	1, 2	1	1
BMI-SDS		−2.93 ± 0.11	−0.604 ± 0.056	−0.39 ± 0.12	−0.028 ± 0.08	−3.71 ± 0.09	−0.18 ± 0.10
BMI-SDS	P	2, 3, 4, 5, 6	1, 4	1	1, 2	1	1
EDI-2		210 ± 4.99 N = 76	197.5 ± 5.7 N = 75	175.7 ± 7.5 N = 34	139.6 ± 3.26 N = 75	158.5 ± 7.15 N = 42	130.3 ± 4.43 N = 34
EDI-2	P	2, 3, 4, 5, 6	1, 4	1, 4	1, 2, 3	1	1
BDI-II		23.06 ± 1.21 N = 77	16.31 ± 1.36 N = 75	11.12 ± 1.82 N = 33	4.91 ± 0.63 N = 75	8.30 ± 1.39 N = 43	3.11 ± 0.63 N = 35
BDI-II	P	2, 3, 4, 5, 6	1, 4	1, 4	1, 2, 3	1	1
Smoking Yes/no		1/78	3/76	7/28	4/75	11/34	6/35
Anti-depressants (yes/no)		0/79	3/76	6/29	0/79	1/44	0/41

Mean ± Std. Error of Mean are reported. acAN_T1, acute anorexia nervosa at timepoint 1; acAN_T2, acute anorexia nervosa at timepoint 2 (after short-term refeeding); recAN, long-term recovered anorexia nervosa; HC, healthy control group; OCP⁻, no oral contraception; OCP⁺, with oral contraception. The groups are coded from 1 to 6 and P indicates only the groups with which each respective group differs significantly at a p-value adjusted for multiple comparisons, i.e. p < 0.006. The comparisons were 9 in total: acAN_T1 (1) vs each other group [2,3,4,5,6], acAN_T2 [2] vs HC_OCP⁻ [4], recAN_OCP⁻ [3] vs HC_OCP⁻ [4], recAN_OCP⁻ [3] vs recAN_OCP⁺ [5], HC_OCP⁻ [4] vs HC_OCP⁺ [6]. For the exact p-values for each comparison refer to supplemental Table 1.

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