Body mass and height were measured before the polysomnography
examination. For the evaluation of height, a Sanny
stadiometer with 0.1 cm precision (American Medical do
Brasil,Ltd, Brazil) fixed to the wall was used. A Filizola scale(Star, Filizola, Brazil) with 0.1 kg precision was used to measure
body mass. Body mass index (BMI) was calculated by dividing
the body weight (in kilograms) by the height (in meters)
squared (BMI = weight/height2
). All measurements were determined
according to the recommended techniques.25