Table 2 Results of sub-analyses

Excluding patients with type 2 diabetes

BMI (kg/m²)

2

140

80

−0.38 [−0.60, −0.15]

92

0.001

BW (kg)

2

140

80

−0.97 [−1.61,-0.33]

41

0.003

Including subjects with a BMI > 25

BMI (kg/m²)

1

30

25

−0.50 [−2.93,1.93]

N. A.

0.69

BW (kg)

1

30

25

−1.50 [−5.95, 2.95]

N. A.

0.51

Excluding the RCT with the largest sample size (Li 2010)

BMI (kg/m²)

2

110

45

−0.30 [−0.33, −0.27]

0

<0.001

BW (kg)

2

110

45

−0.80 [−0.92, −0.68]

0

<0.001

Sensitivity analysis using the fixed-effect model

BMI (kg/m²)

3

170

105

−0.31 [−0.33, −0.28]

78

<0.001

BW (kg)

3

170

105

−0.81 [−0.93, −0.69]

0

<0.001