Correlation between heart rate variability and severity of coronary atherosclerosis: Looking for non-invasive indicators of the disease severity

Table 3 Correlation analysis between spectral heart rate variability indices and the severity of coronary atherosclerosis assessed by the Gensini score

HRV indices	Correlation analysis (n = 139)
	r	P value
TP	-0.091	NS
VLF	0.034	NS
LF	-0.125	NS
HF	-0.11	NS
LF/HF	0.036	NS
AR TP	-0.132	NS
AR VLF	0.12	NS
AR LF	0.032	NS
AR HF	-0.065	NS
AR LF/HF	-0.028	NS

AR HF: High frequency range, autoregressive modeling; AR LF: Low frequency range, autoregressive modeling; AR LF/HF: Ratio LF/HF, autoregressive modeling; AR TP: Total power, autoregressive modeling; AR VLF: Very low frequency range, autoregressive modeling; HF: High frequency; HRV: Heart rate variability; LF: Low frequency; LF/HF: Ratio LF/HF; NS: Not significant; r: Spearman’s Rank correlation coefficient; TP: Total power; VLF: Very low frequency range.