Subgroup IIA Subgroup IIB Subgroup IIC Significant level  
SDANN 49.8 ± 37 28.25 ± 1.138 44.05 ± 51 0.378
SDNN 123.2 ± 21 118.3 ± 24.6 81.3 ± 24.1 0.0001
SDNN INDEX 153.2 ± 90 81.6 ± 79 101.36 ± 52.54 0.18
PNN50 24.37 ± 15.1 12.5 ± 6.08 10.06 ± 5.8 0.0001
RMSSD 103.4 ± 35.1 110.25 ± 26.56 60.48 ± 22.08 0.0001
VLF 1671.88 ± 1174 1008.16 ± 98.5 1182.66 ± 539 0.04
LF 1127.2 ± 412.5 1060 ± 138 809.12 ± 313.53 0.004
HF 1076.13 ± 538 1163.16 ± 377 751.82 ± 316.4 0.005
Table 5: Heart Rate Variability Parameters in the Subgroups.