Table 2.
Pain-intensity ratings of healthy, pain-free participants (n=15) in the second experiment during baseline and CPM conditions
| Participant | Baseline VNRS | CPM VNRS | Absolute effect | Relative effect |
|---|---|---|---|---|
| 1 | 6 | 3 | 3 | 0.5 |
| 2 | 3 | 2 | 1 | 0.3 |
| 3 | 8 | 8 | 0 | 0 |
| 4 | 3 | 4 | −1 | −0.3 |
| 5 | 4 | 2 | 2 | 0.5 |
| 6 | 3 | 1 | 2 | 0.6 |
| 7 | 6 | 5 | 1 | 0.2 |
| 8 | 6 | 4 | 2 | 0.3 |
| 9 | 5 | 4 | 1 | 0.2 |
| 10 | 3 | 2 | 1 | 0.3 |
| 11 | 2 | 2 | 0 | 0 |
| 12 | 0 | 0 | 0 | 0 |
| 13 | 8 | 8 | 0 | 0 |
| 14 | 4 | 3 | 1 | 0.2 |
| 15 | 5 | 5 | 0 | 0 |
Notes: In the second and third columns, pain-intensity ratings of the baseline and CPM conditions are reported. The absolute CPM effect (baseline VNRS – CPM VNRS) and relative CPM effect ([baseline VNRS – CPM VNRS]/baseline VNRS) can be observed in the fourth and fifth columns for every participant.
Abbreviations: CPM, conditioned pain modulation; VNRS, verbal numeric rating scale.