Table 1.

Classification of patients according to their BMI (group 1: normal weight; group 2: overweight; group 3: I/II° obesity; group 4: III° obesity)

Group	BMI (kg/m2)	Malignant disease	Benign disease	Morbid obesity
All patients (n = 124; ♀61, ♂63)		n = 71; ♀30, ♂41	n = 19; ♀9, ♂10	n = 34; ♀22, ♂12
1 (n = 32; ♀12, ♂20)	18.5–24.9	n = 25; ♀10, ♂15	n = 7; ♀2, ♂5	n = 0; ♀0, ♂0
2 (n = 36; ♀13, ♂23)	25.0–29.9	n = 30; ♀11, ♂19	n = 6; ♀2, ♂4	n = 0; ♀0, ♂0
3 (n = 22; ♀12, ♂10)	30.0–39.9	n = 14; ♀7, ♂7	n = 6; ♀5, ♂1	n = 2; ♀0, ♂2
4 (n = 34; ♀24, ♂10)	≤40	n = 2; ♀2, ♂0	n = 0; ♀0, ♂0	n = 32; ♀22, ♂10