TABLE 2

Pearson correlation coefficients of HRV indices: the ARIC Study baseline examination (1987–1989)

LnHF (ms2)LnLF (ms2)LF/HFHFnuLFnu2-min SDNN (ms)MSSD (ms)Mean heart rate (beat/min)
LnHF [Ln (ms2)]1.000.76−0.270.26−0.310.540.60−0.16
LnLF [Ln (ms2)]1.000.28−0.390.340.530.38−0.18
LF/HF1.00−0.720.700.05−0.18−0.07
HFnu1.00−0.840.000.24−0.05
LFnu1.000.05−0.27−0.12
SDNN (ms)1.000.82−0.41
MSSD (ms2)1.00−0.40