Table 4 Operation effects

Weight 6 months after surgery (kg). median (Q1-Q3)

100.00 (84.38–118.00)

105.00 (98.50–137.50)

84.00 (80.00–104.00)

0.005

BMI 6 months after surgery (kg/m2). mean (SD)

35.61 (5.71)

38.64 (4.56)

32.17 (4.96)

 < 0.001

TWL (%) after 6 months. mean (SD)

27.20 (7.61)

22.51 (5.54)

32.51 (6.02)

 < 0.001

EWL (%) after 6 months. median (Q1-Q3)

49.41 (42.41–56.45)

44.64 (35.67–46.09)

57.18 (52.50–74.93)

 < 0.001

EBMIL (%) after 6 months. median (Q1-Q3)

55.48 (48.65–64.79)

50.12 (39.67–53.32)

65.31 (60.44–88.75)

 < 0.001

BMI 12 months after surgery (kg/m2). mean (SD)^a

34.83 (5.40)

37.23 (4.68)

32.44 (5.12)

0.012

TWL (%) after 12 months. mean (SD)^a

28.59 (7.79)

25.18 (7.98)

32.00 (6.10)

0.014

EWL (%) after 12 months. median (Q1-Q3)^a

50.50 (45.19–59.28)

45.38 (38.18–47.92)

57.18 (50.51–74.93)

 < 0.001

EBMIL (%) after 12 months. median (Q1-Q3)^a

56.97 (50.54–67.57)

51.35 (46.06–57.05)

65.31 (56.89–88.75)

 < 0.001