Skip to main content
. 2011 Sep 28;32(6):334–340. doi: 10.4082/kjfm.2011.32.6.334

Table 2.

The correlations between HRV and the CHD risk score.

graphic file with name kjfm-32-334-i002.jpg

HRV: heart rate variability, CHD: coronary heart disease, FRS: Framingham risk score, SDNN: standard deviation of all normal RR intervals, RMSSD: root mean square of successive differences, pNN10, 20, 30, and 50: percentage of differences between adjacent RR intervals that are greater than 10 ms, 20 ms, 30 ms, and 50 ms respectively, ln: natural logarithm, LF: low frequency power, HF: high frequency power, LFnu: normalized low frequency power, HFnu, normalized high frequency power.

*P < 0.05. †P < 0.01.