Table 1 Key characteristics of the patients

Age (years, mean ± SD)

43.1 (9.08)

Females n(%)

44 (67.7)

Preoperative weight (kg, mean ± SD)

128.3 (21.5)

Preoperative body mass index (Kg/m², mean ± SD)

44.3 (5.12)

Concomitant diseases (any) n(%)

57/65 (87.7)

 Type II diabetes n(%)

9 (13.8)

 Hypertonia, cardiac disease n(%)

39 (60)

 Obstructive sleep apnea n(%)

20 (30.7)

 Degenerative joint disease n(%)

13 (20)

 Hypercholesterolemia n(%)

42 (64.6)

 Smokers n(%)

17 (26.1)