Table 4.

Correlation between the change in serum 25(OH)D and the change in renin-angiotensin system activity and blood pressure measurements following treatment with either ergocalciferol or placebo for 8 weeks.

Parameter correlated with change in serum 25 OH-Vitamin D	ρ!	p-value
RAS
∆ Pre-captopril RPF	0.11	0.30
∆ Post-captopril RPF	0.03	0.80
∆ Change in RPF	−0.06	0.56
∆ PRA	−0.07	0.51
∆ AT II	0.06	0.59
ABP
∆ 24hr Mean SBP	−0.001	0.99
∆ 24hr mean DBP	−0.08	0.54
∆ Asleep SBP	0.08	0.58
∆ Awake SBP	−0.09	0.51
∆ Dipping percentage	−0.16	0.24

^!Pearson correlation coefficient.