Table 4.

Regression results for capillary and vascular measures (unadjusted and adjusted for age, gender, race and BMI).

	Unadjusted			Adjusted
	Overall	HBPrx vs. NBP*	HBP vs.NBP*	Overall	HBPrx vs. NBP*	HBP vs. NBP*
Baseline capillary density
Mean difference (95%CI)		−2.9 (−9.1, 3.3)	3.4 (−3.7, 10.5)		−3.7 (−10.3, 2.9)	4.3 (−3.1, 11.8)
p	0.320	0.353	0.351	0.438	0.268	0.254
Postocclusive reactive hyperemia capillary density
Mean difference (95%CI)		−8.4 (−15.1, −1.6)	−0.91 (−8.7, 6.9)		−8.4 (−15.6, −1.2)	0.57 (−7.6, 8.8)
p	0.051	0.016	0.817	0.160	0.023	0.891
Venous occlusion (maximal) capillary density
Mean difference (95%CI)		−1.3 (−8.6, 6.0)	5.8 (−2.7, 14.2)		−2.3 (−10.1, 5.5)	5.6 (−3.2, 14.5)
p	0.316	0.726	0.178	0.527	0.568	0.211
% Capillary recruitment
Mean difference (95%CI)		−7.0 (−9.5, −4.5)	−6.6 (−9.4, −3.7)		−5.7 (−8.4, −3.1)	−5.7 (−8.7, −2.7)
p	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
% Perfused capillaries
Mean difference (95%CI)		−9.9 (−12.4, −7.4)	−8.6 (−11.5, −5.7)		−8.7 (−11.2, −6.2)	−6.5 (−9.3, −3.6)
p	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
Endothelial function: FBFmax/FBFbase
Mean difference (95%CI)		−3.2 (−4.3, −2.1)	−2.3 (−3.6, −1.0)		−2.5 (−3.6, −1.3)	−1.8 (−3.1, −0.6)
p	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
Microvascular structure: FVRmax
Mean difference (95%CI)		2.6 (1.6, 3.6)	1.5 (0.3, 2.6)		2.0 (1.0, 3.0)	1.3 (0.2, 2.5)
p	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001

^*NBP: normal blood pressure; HBPrx: high blood pressure, treated; HBP: high blood pressure, untreated.