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. 2021 Apr 30;12:652340. doi: 10.3389/fpsyt.2021.652340

Table 3.

Comparison of HRV measures between MDD, BD, and others group.

MDD1
(n = 448)
BD2
(n = 96)
Others3
(n = 917)
F P Post-hoc analysis
1 vs. 2 2 vs. 3 3 vs. 1
HR (bpm) 79.42 (13.12) 80.00 (12.88) 76.86 (12.24) 7.76 <0.001 0.679 0.549 0.386
RMSSD (ms) 20.73 (12.21) 23.94 (13.24) 21.42 (11.82) −1.36 0.174
SDNN (ms) 28.72 (13.29) 32.36 (13.83) 30.65 (13.93) 4.31 0.014 0.018 0.246 0.014
LF (ms2/Hz) 234.82 (367.47) 366.63 (631.26) 274.48 (526.75) 3.031 0.049 0.017 0.081 0.162
HF (ms2/Hz) 155.92 (197.06) 200.59 (237.62) 174.12 (244.50) 1.83 0.161
LF/HF ratio 2.46 (3.22) 3.03 (4.69) 2.71 (5.68) 0.67 0.513

MDD, major depressive disorder; BD, bipolar disorders; HR, resting state heart rate; RMSSD, root mean square of R-R interval of successive differences; SDNN, standard deviation of average normal-normal intervals; LF, low frequency (0.04~0.15 Hz); HF, high frequency (0.15~0.4 Hz).