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

Table 5 Results of regression analyses with BMI-SDS as outcome (n = 360)

Predictors^a	B	SE	Beta	t	Sig.^b
(a) Patients (R² = 0.39)
Intercept	1.14	0.47		2.42	0.016
Premorbid BMI-SDS	0.57	0.06	0.43	10.27	7.63 × 10^–22
Age at admission	− 0.25	0.03	− 0.34	− 8.19	4.85 × 10^–15
Low body weight	− 0.38	0.10	− 0.16	− 3.74	0.00022
Depressed mood	0.28	0.11	0.10	2.47	0.014
Other reasons	0.41	0.17	0.10	2.37	0.018
(b) Parents (R² = 0.42)
Intercept	1.01	0.47		2.15	0.03
Premorbid BMI-SDS	0.55	0.05	0.42	10.19	1.56 × 10^–21
Age at admission	− 0.23	0.03	− 0.32	− 7.55	3.86 × 10^–13
Low body weight	− 0.46	0.11	− 0.19	− 4.28	2.47 × 10^–05
Vomiting (self-induced)	0.56	0.25	0.10	2.29	0.023
Depressed mood	0.16	0.12	0.06	1.41	0.160
Suicidal ideation	0.58	0.29	0.08	1.95	0.052
Social withdrawal	0.34	0.16	0.09	2.19	0.029
Abnormal electrocardiogram	− 0.77	0.38	− 0.08	− 2.04	0.043
Recommendation of physician or therapist	− 0.10	0.12	− 0.04	− 0.88	0.382

B unstandardized regression coefficients; SE standard error of unstandardized regression coefficient; Beta standardized coefficients; t t statistic; Sig significance; R² explained variance
^aAll items rendering nominal P values < 0.05 based on reasons for inpatient treatment given by patients and parents
^bPredictors that survive the Bonferroni-Holm correction are highlighted (6 tests in model for patients, 10 tests in model for parents)

ISSN: 1753-2000