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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)

From: Prevalence of non-alcoholic fatty liver disease in four different weight related patient groups: association with small bowel length and risk factors

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