BMC Primary Care

Table 4 The mean and standard deviation of the dietary antioxidants before and after intervention in type 2 diabetes patients

From: 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

		Vitamin D (N = 42)		Placebo (N = 43)		P-value^*
Beta-Carotene (micg/day)	Baseline	3780.76	3117.63	5440.75	6623.31	0.242
	After intervention	4379.33	4073.18	4419.51	4235.22
	P-value^**	0.362		0.963
Vitamin A (micg/day)	Baseline	878.74	663.17	893.10	723.97	0.952
	After intervention	757.20	433.10	781.86	489.78
	P-value^**	0.059		0.947
Vitamin E (mg/day)	Baseline	15.79	4.15	15.96	4.63	0.951
	After intervention	15.42	4.18	15.67	4.13
	P-value^**	0.882		0.522
Vitamin C (mg/day)	Baseline	122.87	81.12	139.18	108.88	0.596
	After intervention	120.19	74.06	123.56	76.57
	P-value^**	0.101		0.528
Selenium (mg/day)	Baseline	238.09	54.43	235.76	88.75	0.386
	After intervention	213.06	61.64	230.75	83.54
	P-value^**	0.696		0.887
Zinc (mg/day)	Baseline	20.61	5.82	20.46	5.85	0.306
	After intervention	20.96	6.40	19.39	6.05
	P-value^**	0.003		0.005
Manganese (mg/day)	Baseline	12.57	3.61	12.83	5.54	0.381
	After intervention	11.48	4.04	12.79	4.62
	P-value^**	0.240		0.052
Copper (micg/day)	Baseline	2.79	0.75	2.67	1.05	0.268
	After intervention	2.54	0.75	2.73	0.93
	P-value^**	0.364		0.988
Magnesium (mg/day)	Baseline	717.30	168.48	725.50	247.19	0.461
	After intervention	680.08	191.00	732.94	224.49
	P-value^**	0.695		0.284

*Independent t-test, **Paired t-test

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