Table 5. Multiple Regression Analysis Of The Risk Factors That Reduce HRV In Non-Cardiac Vascular Case Patients Independent Of LV Function.

HRV (ms)	All case patients	LVSD cases	Normal LV cases
Triangular index	Smoking	N/A	Smoking
SDNN	*MI/IHD	N/A	Potassium
SDNN index	Smoking	N/A	N/A
SDANN	N/A	N/A	Diabetes
RMSSD	N/A	N/A	N/A

LVSD: left ventricular systolic dysfunction, LV: left ventricle, SDNN: standard deviation normal-to-normal interval, N/A: not applicable, SDANN: standard deviation average normal-to-normal interval, RMSSD: mean square root of successive differences, p = 0.06 for *MI/IHD, MI/IHD: myocardial infarction/ischaemic heart disease, other risk factors in analysis had p-values < 0.05.