Table 1

 Characteristics of study subjects

MinimumMaximumMeanSEM
BMI, body mass index calculated as the ratio of body weight (in kg) and height squared (in metres).
*Clinical prediction score which is equal to the value of neck circumference (in cm) adjusted for history of hypertension (+4 cm) and reporting of frequent snoring (+3 cm) and of witnessed apnoeas (+3 cm). For details see Flemmons.21
Age227649.271.12
Body weight (kg)5117889.512.20
Height (m)1.472.161.720.01
BMI (kg/m2)16.155.930.470.78
Neck circumference (cm)315339.920.40
Adjusted neck circumference (cm)*365945.710.53
Epworth sleepiness score02111.720.53