Table 3.

Risk factors for patients aged under 60 years in 6454 patients: multivariate logistic regression

	OR	95% CI	p-value
Sex (ref. female)
Male	2.40	1.00–5.73	.049
Age at first admission	1.04	1.03–1.06	<.001
Ratio of actual weight to ideal body weight (thinness index)	0.91	0.89–0.93	<.001
Charlson Comorbidity Index	1.28	1.11–1.49	<.001
Hospital type (ref. non-university)
University	0.45	0.30–0.69	<.001
Frequency of hospitalization	0.93	0.79–1.10	.399
Use of catecholamine	9.82	6.00–16.10	<.001
Use of atropine	0.27	0.03–2.19	.221
Other psychological disorders
Anxiety disorder	0.54	0.23–1.27	.157
Mood disorder	0.83	0.45–1.52	.550
Schizophrenia	0.72	0.34–1.54	.397
Binge eating and purging	1.69	0.78–3.65	.180