. 2021 Jan 13;11:1125. doi: 10.1038/s41598-020-80693-4

Table 1.

Characteristics of the study sample.

	HC	AN		p-value
	n = 20	T0, n = 24 (n = 20)*	T1, n = 20
	Mean ± SD	Mean ± SD	Mean ± SD
Body height (cm)	169.1 ± 6.7	165.4 ± 5.1	165.4 ± 5.4	0.045^a 0.057^b 0.066
Body height (cm)		(165.1 ± 5.5)		0.045^a 0.057^b 0.066
Weight (kg)	58.9 ± 7.9	43.9 ± 5.1	47.7 ± 5.1	< 0.001^a,b,c
Weight (kg)		(44.5 ± 4.9)		< 0.001^a,b,c
BMI (kg/m²)	20.5 ± 1.9	16.0 ± 1.5	17.4 ± 1.2	< 0.001^a,b,c
BMI (kg/m²)		(16.3 ± 1.2)		< 0.001^a,b,c
BMI percentile (according to KIGGS)	39.3 ± 23.7	2.8 ± 3.4	7.4 ± 5.6	< 0.001^a,b,c
BMI percentile (according to KIGGS)		(2.9 ± 3.4)		< 0.001^a,b,c
BMI SDS (according to KIGGS)	− 0.4 ± 0.7	− 2.6 ± 1.5	− 1.7 ± 0.8	< 0.001^a,b,c
BMI SDS (according to KIGGS)		(− 2.4 ± 1.1)		< 0.001^a,b,c
FM (%)	25 ± 5.6^#	17 ± 4.3⁺	21.5 ± 5	< 0.001^a,c 0.049^b
FM (%)		(17.1 ± 4.1)		< 0.001^a,c 0.049^b
FMI (kg/m²)	5.2 ± 1.5^#	2.8 ± 0.8⁺	7.9 ± 1.8	< 0.001^a,b,c
FMI (kg/m²)		(2.8 ± 0.7)		< 0.001^a,b,c
FFMI (kg/m²)	15.3 ± 1.4^#	13.4 ± 1.2⁺	13.7 ± 1.1	< 0.001^a,b 0.087^c
FFMI (kg/m²)		(13.5 ± 1.2)		< 0.001^a,b 0.087^c

Significant effects are in bold print. HC healthy control, AN patients with Anorexia nervosa, BMI body mass index, SDS standard deviation scores, FM fat mass, FMI fat mass index, FFMI fat free mass index, KIGGS German Health Interview and Examination Survey for Children and Adolescents. P-values vs. HC were calculated by t test for independent samples, T0 vs. T1 by t test for paired samples.

*20 AN patients with follow-up data, ^#n = 19, ⁺n = 23

^aHC vs. AN(T0).

^bHC vs. AN(T1).

^cAN(T0) vs. AN(T1).