Table 3.
Effect of treatment duration on outcome measures
| Outcome measures | Parameter | Trial period | Early treatment period | Late treatment period |
|---|---|---|---|---|
| Pain relief (pre-/post-treatment score difference) | Average ± SD | 2.72 ± 1.81 | 2.87 ± 1.92 | 3.46 ± 1.99 |
| 95% interval | (2.59, 2.85) | (2.72, 3.02) | (3.35, 3.57) | |
| Sample size | 725 | 640 | 1307 | |
| Medication usage (%) | Eliminated | 7.45 | 8.28 | 14.19 |
| Decreased | 52.84 | 54.75 | 53.12 | |
| No effect | 39.72 | 36.97 | 32.69 | |
| Sleep improvement (%) | Yes | 55.50 | 54.25 | 64.81 |
| No | 44.50 | 45.75 | 35.19 | |
| Work performance (%) | Yes | 78.80 | 76.74 | 85.68 |
| No | 21.20 | 23.26 | 14.32 |