Table 4.
Individual %ΔOA values and statistical results.
| HC | %ΔOA1 | %ΔOA2 | %ΔOA3 | CP | %ΔOA1 | %ΔOA2 | %ΔOA3 |
|---|---|---|---|---|---|---|---|
| 1 | 58.97% | 19.12% | 19.05% | 1 | 1.11% | 5.49% | 79.55% |
| 2 | 98.65% | 56.94% | 98.72% | 2 | 0.00% | 0.00% | 0.00% |
| 3 | 100.00% | 50.00% | 28.57% | 3 | 69.84% | 57.40% | 65.20% |
| 4 | 9.21% | 14.81% | 8.22% | 4 | 100.00% | 52.00% | 70.00% |
| 5 | 76.36% | 55.10% | 100.00% | 5 | 27.00% | 19.00% | 53.00% |
| 6 | 67.06% | 34.88% | 66.67% | 6 | 1.35% | 1.30% | 8.50% |
| 7 | 51.22% | 46.67% | 52.17% | 7 | 20.00% | 30.40% | 18.29% |
| 8 | 47.78% | 43.96% | 54.02% | 8 | 4.71% | 10.00% | 8.00% |
| 9 | 11.70% | 2.04% | 0.00% | 9 | 63.04% | 100.00% | 87.90% |
| 10 | 21.98% | 28.89% | 11.36% | 10 | 7.90% | 19.28% | 11.76% |
| 11 | 88.64% | 44.19% | 50.00% | 11 | 33.85% | 13.30% | 14.30% |
| 12 | 10.94% | 10.45% | 7.46% | 12 | 22.86% | 0.00% | 40.43% |
| 13 | 13.73% | 3.50% | 1.80% | 13 | 0.00% | 0.00% | 0.00% |
| 14 | 100.00% | 100.00% | 100.00% | 14 | 48.28% | 49.21% | 11.63% |
| 15 | 6.25% | 3.23% | 3.57% | 15 | 23.53% | 24.32% | 13.89% |
| 16 | 42.86% | 28.57% | 23.81% | 16 | 0.00% | 3.70% | 0.00% |
| 17 | 13.40% | 11.11% | 8.33% | 17 | 65.00% | 39.00% | 20.00% |
| Median of HC | 28.89% | Median of CP | 19.00% | ||||
| 25% percentile | 11.02% | 25% percentile | 4.20% | ||||
| 75% percentile | 56.02% | 75% percentile | 48.74% | ||||
| p value | 0.047 | ||||||
HC: healthy control; CP: patients with chronic pain; OA: offset analgesia.
Numbers in the HC and CP columns indicate designated numbers following order of participation. A between-group comparison was made with a Mann–Whitney’s U test.