Table 3 Association between improvement categories (based on the clinically relevant change in pain intensity) and changes in HRV, using "no change" as the reference category (n = 88)
|  | β | P-value | Confidence intervals | |
|---|---|---|---|---|
RR GroupxTime | 0.5 | 0.96 | -19.8 | 20.7 |
RMSSD GroupxTime | 1.8 | 0.37 | -2.2 | 5.7 |
SDNN GroupxTime | 1.2 | 0.44 | -1.9 | 4.4 |
HFms GroupxTime | 59.7 | 0.18 | -27.5 | 147.0 |
Total Power GroupxTime | 51.7 | 0.56 | -120.8 | 224.1 |