A randomized controlled trial to investigate the impact of a low glycemic index (GI) diet on body mass index in obese adolescents

Table 5 Comparison of the cardiometabolic risk outcome variables across 0 and 6 months between the study subjects in the control and low glycemic index, GI, group after adjustment for age, sex and physical activity level

	Regression coefficients of the mixed effects models
	Group		Time		Group*Time
Obesity indices	B (95% CI)	p	B (95% CI)	p	B (95% CI)	p
Body weight (kg)	5.17 (0.18, 10.17)	0.043	-0.21 (-2.19, 1.77)	0.836	-1.65 (-4.67, 1.36)	0.283
Body mass index (kg/m²)	1.15 (-0.29, 2.58)	0.117	-0.12 (-0.80, 0.56)	0.721	-0.82 (-1.96, 0.33)	0.161
Waist circumference (cm)	4.17 (0.28, 8.07)	0.036	-2.59 (-4.09, -1.10)	0.001	-3.47 (-6.36, -0.59)	0.018
Body Fat (%)	2.46 (-0.46, 5.38)	0.099	1.21 (-0.94, 3.36)	0.269	-2.46 (-6.18, 1.27)	0.196
Trunk fat (%)	2.83 (0.16, 5.51)	0.038	-0.96 (-2.51, 0.60)	0.228	-0.78 (-3.33, 1.77)	0.547
Visceral fat (%)^†	0.15 (0.02, 0.28)	0.024	-0.07 (-0.14, 0.01)	0.068	0.00 (-0.16, 0.15)	0.960

Those outcomes marked with ^† were log-transformed before being subjected to analysis.
Only the model estimates of the regression coefficient (B) of the dummy variables for the group [Group: 0 = Control (reference); 1 = Low GI], time (Month 6 and month 0 as reference), time and group interaction terms (Group*Time) were shown for the mixed effects models with adjustment for age, sex and physical activity level.

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