Multi-electrolyte disturbance and supplementation in severely malnourished hospitalized adolescents with restrictive eating disorders

Table 2 Analysis of subgroups

Variable	Inpatients at 70–75% TGW				Inpatients at < 70% TGW
	Electrolyte derangements°		Electrolyte supplementation		Electrolyte derangements°		Electrolyte supplementation
	t	Sig.	t	Sig.	t	Sig.	t	Sig.
Percent of TGW	1.683	0.099	3.553	0.012	3.046	0.005*	3.784	< 0.001*
BMI z-score^	1.972	0.056	0.492	0.626	1.932	0.067	2.670	0.014
Caloric intake on admission	1.305	0.038	1.194	0.240	1.812	0.067	− 0.324	0.749
Initial inpatient caloric intake	1.136	0.261	0.698	0.488	1.760	0.090	1.416	0.168
Advancing by	0.275	0.785	− 0.284	0.777	− 0.216	0.831	1.468	0.154
% total weight lost	1.134	0.263	0.414	0.681	− 2.301	0.029	− 2.105	0.045
Duration of Illness	− 1.340	0.204	− 1.430	0.246	− 0.746	0.462	− 2.643	0.014

*p < 0.01
°Electrolyte derangement defined as: potassium ≤ 3.5 mEq/L; phosphorus ≤ 3.0 mg/L; magnesium ≤ 1.4 mEq/L
^BMI z-score was only determined in participants ≤ 20 years old (N = 16) due to lack of standardized percentiles above this age

ISSN: 2050-2974