Table 4.
Cross-tabulation of HRV and EF outcomes following a biofeedback intervention
| EF improvements | No EF improvements | Total | |
|---|---|---|---|
| HRV improvements | 5 | 3 | 8 |
| No HRV improvements | 1 | 1 | 2 |
| Total | 6 | 4 | 10 |
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