Table 3.
Comparison of time domain analysis in controls and cases
| Parameters | Group | P | Significance | |||
|---|---|---|---|---|---|---|
| Control | Case | |||||
| Mean | SD | Mean | SD | |||
| Mean RR(s) | 0.87 | 0.11 | 0.76 | 0.09 | 3.01E-07 | HS |
| (SDNN)(s) | 0.05 | 0.04 | 0.05 | 0.03 | 0.15 | NS |
| Mean HR (beats/min) | 70.82 | 9.90 | 79.45 | 7.22 | 1.53E-06 | HS |
| RMSSD (ms) | 38.30 | 25.80 | 37.21 | 26.89 | 0.41 | NS |
| NN50 (count) | 11.43 | 8.74 | 12.08 | 8.77 | 0.36 | NS |
| pNN50 (%) | 8.14 | 6.47 | 8.3 | 6.18 | 0.45 | NS |
NS: P>0.05, S: P<0.05, HS: P<0.01. RMSSD=Root mean square successive difference, HR=Heart rate, NS=Not significant, HS=Highly significant, SD=Standard deviation, S=Significant, SDNN=Standard deviation of the normal to normal intervals, RR=Mean interval (in seconds) between 2 consecutive R waves.