Table 3.

Comparison of heart rate variability parameters between cases and controls

	Cases (n=77)		Controls (n=77)		t	P
	Mean	±SD	Mean	±SD
SN HRV parameters (Time domain)
Avg. RR	737.24	114.41	685.34	96.51	3.043	0.003
SD RR	50.50	18.32	54.65	24.78	−1.182	0.239
RM SSD	37.36	21.19	52.69	34.05	−3.355	0.001
pRR50	6.51	6.71	11.99	10.70	−3.808	<0.001
SN HRV parameters (Frequency domain)
VLF	850.97	517.90	766.82	527.98	0.998	0.320
LF	863.70	604.36	747.73	628.93	1.167	0.245
HF	358.24	326.44	949.56	798.43	−6.015	<0.001
LF/HF	3.11	1.60	0.90	0.38	11.780	<0.001