Table 2.

Multiple regression analysis

	Dependent Variables
	IMT		IMT-To-Lumen Ratio
Independent Variables	β	P value	β	P value
MSNA	0.21	0.042	0.35	0.002
Age	0.33	0.002	0.17	0.121
Sex	−0.02	0.807	−0.14	0.177
Body mass index	0.22	0.020	0.13	0.205
History of HTN*	0.02	0.860	0.01	0.932
Family history of HTN	0.05	0.586	0.08	0.411
Ambulatory 24-h SBP	0.30	0.002	0.23	0.024
Total cholesterol/HDL ratio	−0.07	0.464	−0.06	0.583
Model variance (R2):	0.47	<0.001	0.38	<0.001

Men: n = 52, women: n = 41. MSNA expressed as burst incidence (bursts/100 heartbeats). β values are standardized coefficients. HDL, high-density lipoprotein; IMT, intima-media thickness; MSNA, muscle sympathetic nerve activity; NA, muscle sympathetic nerve activity; SBP, systolic blood pressure.

^*Reported history of hypertension (HTN) or borderline HTN.