Table 3.
Distribution of 5-min HRV indices by time period.
| Percentile |
|||||
|---|---|---|---|---|---|
| Variable/period | na | 25 | 50 | 75 | 95 |
| 5-min SDNN (msec) | |||||
| Before | 1,320 | 34 | 44 | 54 | 78 |
| During | 1,366 | 39 | 49 | 58 | 76 |
| After | 1,309 | 35 | 44 | 54 | 72 |
| 5-min LF power (msec2) | |||||
| Before | 1,298 | 304.7 | 507.6 | 830.8 | 1506.2 |
| During | 1,360 | 353.5 | 606.2 | 888.6 | 1526.2 |
| After | 1,287 | 310.6 | 500.1 | 803.1 | 1509.5 |
| 5-min HF power (msec2) | |||||
| Before | 1,298 | 52.1 | 97.9 | 185.1 | 375.6 |
| During | 1,360 | 81.9 | 139.0 | 222.8 | 420.3 |
| After | 1,287 | 60.9 | 126.4 | 228.7 | 425.6 |
a
Sample size after excluding all abnormities and noises, as well as the data of the time when drivers left the taxicab.