Table 5. Linear regression analysis of biochemical parameters in each study group before and after intervention.

*BMI = body mass index

*p-value of ≤0.05 was taken as statistically significant

Study groups		Independent variables	Dependent variables	Standardized coefficient β	R2 value	Predicted Ŷ equation	P-value
Control	Prior to intervention	Vitamin D3	Adiponectin	-1.89	0.026	-1.8X+144.5	0.54
		BMI*	Adiponectin	32.5	0.69	32.49X-641.27	<0.001*
		BMI	Vitamin D3	-0.23	0.0049	-0.23X+21.72	0.789
	Post-intervention	Vitamin D3	Adiponectin	-0.52	0.042	-0.5X+75.7	0.43
		BMI	Adiponectin	0.083	0.0002	0.08X +64.41	0.961
		BMI	Vitamin D3	0.19	0.0057	0.19X+11.43	0.774
Interventional	Prior to intervention	Vitamin D	Adiponectin	-1.2	0.0078	-1.2X+142.2	0.74
		BMI	Adiponectin	32.1	0.5	32.1X-626.98	0.002*
		BMI	Vitamin D3	-0.12	0.0012	-0.12X+18.08	0.894
	Post-intervention	Vitamin D3	Adiponectin	1.16	0.074	1.16X+37.3	0.289
		BMI	Adiponectin	1.8	0.0083	1.8X+26.64	0.73
		BMI	Vitamin D3	-0.54	0.013	-0.54X+48.8	0.658