Table 4 Repetitive measures of weight loss effect after LSG by age groups

BMI (kg/m²)

 < 45

46.25 (42.17–50.31)

40.81 (37.32–45.73)

36.57 (32.88–41.81)

33.21 (29.32–38.76)

30.38 (26.42–35.82)

26.77 (23.78–32.25)

 < 0.001

BMI (kg/m²)

 ≥ 45

46.69 (42.02–52.08)

41.36 (37.11–47.27)

37.62 (33.03–44.25)

33.83 (29.75–39.68)

31.83 (26.77–37.65)

27.62 (23.18–34.72)

p-value ≥ 45 vs. < 45

0.410

0.501

0.383

0.405

0.187

0.596

%TWL

 < 45

N/A

10.14 (8.16–12.26)

19.37 (16.20–22.27)

27.01 (22.22–31.19)

33.33 (26.97–38.38)

40.95 (35.26–45.97)

%TWL

 ≥ 45

N/A

10.23 (8.15–11.82)

18.33 (15.65–22.00)

26.52 (22.53–30.47)

32.47 (27.33–38.03)

40.44 (35.95–45.10)

p-value ≥ 45 vs. < 45

N/A

0.581

0.288

0.551

0.979

0.459

%EWL

 < 45

N/A

19.24 (15.38–24.53)

36.86 (29.24–44.20)

51.67 (40.98–61.54)

63.69 (48.57–75.86)

78.52 (62.65–90.32)

%EWL

 ≥ 45

N/A

19.18 (15.3–22.95)

35.29 (27.56–43.85)

50 (40.41–59.59)

60 (48.68–73.77)

74.54 (61.43–90.91)

p-value ≥ 45 vs. < 45

N/A

0.499

0.361

0.493

0.412

0.622

%EBMIL

 < 45

N/A

22.8 (17.61–28.89)

43.26 (33.42–53.35)

61.24 (46.02–74.45)

74.26 (56.04–90.79)

91.95 (70.74–107.16)

%EBMIL

 ≥ 45

N/A

22.3 (17.39–27.31)

41.11 (31.53–51.45)

58.58 (44.81–72.93)

69.66 (54.38–89.92)

88.01 (68.7–111.25)

p-value ≥ 45 vs. < 45

N/A

0.486

0.354

0.463

0.376

0.788