Table 2 Relationship between selected clinical and laboratory parameters and BMI SDS, total weight loss and rate of weight loss at assessment of 268 postmenarcheal adolescent girls presenting with an eating disorder

Pulse frequency

BMI SDS

0,326

0,188

<0,001

Weight loss

−0,199

0,070

<0,001

Final rate of weight loss

−0,189

0,027

p = 0,003

Systolic blood pressure

BMI SDS

0,311

0,152

<0,001

Weight loss

-

-

-

Final rate of weight loss

−0,249

0,056

<0,001

Plasma potassium

BMI SDS

-

-

-

Weight loss

-

-

-

Final rate of weight loss

-

-

-

Plasma phosphate

BMI SDS

-

-

-

Weight loss

−0,141

0,020

p = 0,030

Final rate of weight loss

-

-

-

Serum free triodothyronine

BMI SDS

0,191

0,033

<0,001

Weight loss

−0,347

0,267

<0,001

Final rate of weight loss

−0,315

0,107

<0,001

Serum insulin-like growth factor 1

BMI SDS

0,260

0,073

<0,001

Weight loss

−0,245

0,048

<0,001

Final rate of weight loss

−0,333

0,275

<0,001

Serum luteinizing hormone

BMI SDS

0,210

0,086

p = 0,003

Weight loss

-

-

-

Final rate of weight loss

−0,227

0,040

p = 0,001