Table 1.

Characteristics of study participants

	Cohort (N = 281)		AN-R (N = 175)		AN-BP (N = 106)
Patient Characteristics	N	%	N	%	N	%
Female	256	91	158	62	98	38
Male	25	9	17	68	8	32
Admitted from
Home	219	78	128	58	91	42
Hospital transfer	37	13	29	78	8	22
Inpatient eating disorder program	23	8	17	74	6	26
Other	2	< 1	1	50	1	50
Referral from outside Colorado	257	91	161	63	96	37
	Meana	SDa	Meana	SDa	Meana	SDa	t-testb	pvalue
Age	28	22–37	27	22–38	31	22–37	15,900	0.15
Length of hospitalization (days)	22	15–30	23	16–33	21	13–28	13,754	0.07
Percent of IBW
Admission	57.7	5.5	57.2	5.5	58.4	5.4	1.75	0.08
Nadir	57	6.2	56.5	6.1	57.9	6.5	1.81	0.07
Discharge	69	7.4	67.7	6.2	71.2	8.7	3.61	< .001
Change in %IBW	12	8.4	11.2	7.5	13.3	9.6	2.03	0.04
BMI (kg/m2)
Admission	12.1	1.3	12	1.3	12.2	1.3	1.01	0.31
Nadir	12	1.4	11.9	1.4	12.1	1.6	0.91	0.37
Discharge	14.5	1.5	14.2	1.3	14.9	1.7	3.5	< .001
Change in BMI	2.5	1.5	2.3	1.4	2.8	1.7	2.8	<.001
Weekly weight gain (kg)	2	1.5	1.7	0.9	2.6	2.0	4.26	< .0001
Daily caloric intake (kcal)
Admission	1457	249	1477	269	1424	209	−1.74	0.06
Discharge	3175	762	3282	763	2996	728	−3.1	0.002

AN-R Anorexia nervosa restricting subtype, AN-BP Anorexia nervosa binge-purge subtype, IBW Ideal body weight, BMI Body mass index

^aMedian and IQR for not normally distributed variables

^bMann-Whitney U test