Group comparisons of metabolic parameters at different time points adjusting for covariates.

Table 3: Group comparisons of metabolic parameters at different time points adjusting for covariates.

	4000 IU (n = 50)	6000 IU (n = 25)
25(OH)D (ng/ml)
Baseline	22.25 ± 7.19	23.74 ± 5.09
3 months	37.34 ± 12.31^*	43.20 ± 15.94^*
6 months	37.99 ± 13.22^*	40.62 ± 19.39^*
P-value groups = 0.232	P-value time = 0.019	P-value interaction = 0.352
Total Cholesterol (mg/dl)
Baseline	213.08 ± 42.30	193.88 ± 41.03
3 months	209.26 ± 43.62	184.68 ± 50.89
6 months	199.84 ± 32.79	180.48 ± 27.53
P-value groups = 0.204	P-value time = 0.954	P-value interaction = 0.605
Triglycerides (mg/dl)
Baseline	182.98 ± 110.11	201.44 ± 91.35
3 months	174.62 ± 109.83	192.20 ± 94.49
6 months	187.08 ± 151.26	172.92 ± 76.87
P-value groups = 0.962	P-value time = 0.250	P-value interaction = 0.167
LDL Cholesterol
Baseline	128.34 ± 40.54	115.56 ± 34.53
3 months	125.88 ± 40.90	120.00 ± 35.37
6 months	120.76 ± 30.35	121.96 ± 40.60
P-value groups = 0.969	P-value time = 0.872	P-value interaction = 0.423
HDL Cholesterol
Baseline	50.64 ± 12.20	42.44 ± 10.40
3 months	48.92 ± 11.12	42.12 ± 12.35
6 months	46.98 ± 10.37	42.12 ± 12.76
P-value groups = 0.088	P-value time = 0.188	P-value interaction = 0.118

Data represented by mean ± standard error. ^*Represents significant differences from baseline. Level of significance is at P < 0.05.

25(OH)D: serum vitamin D; LDL: low density lipoprotein; HDL: high density lipoprotein; Analysis was adjusted for age, gender,

years with diabetes, smoking, BMI, vitamin D intake, sun exposure score, fasting plasma glucose, upper arm skin color, forearm skin color, and lipid lowering medication use.