Reasons for admission and variance of body weight at referral in female inpatients with anorexia nervosa in Germany

Table 1 Sample characteristics

	Complete parent-patient dyad data set (n = 360)		Data set used for factor analysis based on patients’ reasons given for inpatient treatment (n = 471)
	Mean	SD	Data available for n cases	Mean	SD
Age at admission (years)	15.16	1.59	471	15.10	1.78
BMI at admission (kg/m²)	15.26	1.50	471	15.23	1.51
BMI-SDS at admission	− 2.96	1.18	471	− 2.96	1.21
Premorbid BMI (kg/m²)	19.68	2.76	424	19.69	2.85
Premorbid BMI-SDS	− 0.36	0.89	412	− 0.36	0.91
Illness duration (weeks)	51.11	45.30	448	52.89	54.53

	Absolute frequency	Relative frequency	Data available for n cases	Absolute frequency	Relative frequency
DSM-5 diagnoses			471
AN restricting type	292	0.81		377	0.80
AN binge-eating/purging type	20	0.06		23	0.05
Non-typical AN^a	48	0.13		71	0.15

SD standard deviation; BMI body mass index; BMI-SDS BMI standard deviation score
^aNon-typical AN refers to inpatients with an AN-like clinical symptomatology, in whom any combination of two of the three DSM-5 criteria applied upon admission

ISSN: 1753-2000