Vitamin D supplementation improves SIRT1, Irisin, and glucose indices in overweight or obese type 2 diabetic patients: a double-blind randomized placebo-controlled clinical trial

Table 6 The mean and standard deviation of the secondary variable before and after intervention in type 2 diabetes patients

		Vitamin D (N = 42)	Placebo (N = 43)	P-value^*	Adjusted P-value^***
FBS (mg/dl)	Baseline	172.48 (62.16)	178.28 (71.74)	0.629	0.130
	After intervention	175.52 (65.44)	162.72 (61.36)	0.355
	P-value^**	0.742	0.053
Insulin (micIU/ml)	Baseline	12.64 (5.94)	14.09 (6.43)	0.284	0.101
	After intervention	15.31 (7.24)	18.77 (9.02)	0.055
	P-value^**	0.002	< 0.001

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