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Table 2 HRV indices in no CAD and CAD groups
| Index | No DAC (n = 21) | DAC (n=43) | p |
|---|---|---|---|
| RR (ms) | 896±136 | 914±139 | 0.6191 |
| SDNN (ms) | 39.71±18.7 | 29.95±13.6 | 0.0209 * |
| RMSSD (ms) | 32.38±18.1 | 22.99±11.9 | 0.0303 ** |
| NN50 (count) | 135.48±146.28 | 59.42±80.9 | 0.0476 ** |
| VLF (ms 2 ) | 323.67±420.49 | 220.56±242.8 | 0.2058 |
| LF (ms 2 ) | 332.48±420.78 | 179.12±175.08 | 0.0641 |
| HF (ms 2 ) | 233.10±241.7 | 87.72±81.04 | 0.0073 ** |
| SD1 (ms) | 23.21±12.9 | 16.52±16.52 | 0.0282 * |
| SD2 (ms) | 67.19±25.9 | 52.75±25.6 | 0.0387 * |
| SD1/SD2 | 0.33±0.1 | 0.34±0.1 | 0.6269 |
| α1 | 0.93±0.2 | 1±0.3 | 0.2189 |
| α2 | 0.9±0.2 | 0.91±0.1 | 0.5577 |
| Lyapunov exponent (LE) | 0.91±0.1 | 0.89±0.1 | 0.4416 |
| Hurst exponent (HE) | 0.21±0.1 | 0.22±0.1 | 0.6294 |
| -ApEn | 0.388±0.09 | 0.343±0.08 | 0.0368 ** |
