Table 4.
Markers that predict the long term effect of treatment on pain and disability assessed in a multivariate mixed regression model (n = 24).
| Dependent variable: Brazilian Profile of Chronic Pain: Screen (B-PCP:S) | |||||
|---|---|---|---|---|---|
| Parameter | β | SEM | t | P | 95% CI |
| Intercept | 89.14 | 8.487 | 10.503 | 0.000 | 72.33 to 105.94 |
| Treatment group | |||||
| EIMS | -9.89 | 2.865 | -3.454 | 0.001 | (-15.57 to -4.22) |
| Sham | 0(reference) | ||||
| Motor evoked potential (MEP) at baseline | -0.61 | 0.153 | -4.03 | 0.000 | (-0.58 to -0.26) |
| (BDNF)& | -0.08 | 0.132 | -0.70 | 0.48 | (-0.33 to 0.16) |
| Interaction between Change on serum brain derivate neural factor (BDNF)& vs. treatment group | |||||
| EIMS ∗ BDNF& | 0.67 | 0.29 | 2.24 | 0.02 | (0.07 to 1.26) |
| Sham ∗ BDNF& | 0(reference) | ||||
CI, confidence interval; EIMS, electrical intramuscular stimulation. &Change on serum brain-derived-neurotrophic factor (BDNF) [(BDNF pre-treatment – BDNF after treatment)/BDNF pre-treatment]∗100.