Table 2.
Proportion with clinically relevant improvement on the Neck Disability Index (5 points) and Neck Pain Intensity scale (30%) at 12 and 26 wks post-randomization. Main effects of primary and booster treatment assignments.
| Unadjusted* | Adjusted** | |||
|---|---|---|---|---|
| Massage Dose | RR (95% CI) | Omnibus P | RR (95% CI) | Omnibus P |
| NECK DISABILITY INDEX | ||||
|
| ||||
| 12 WEEK OUTCOME | ||||
| Primary Treatment | ||||
| 30min × 2/wk | 1.00 | 1.00 | ||
| 30min × 3/wk | 0.94 (0.47, 1.87) | 0.82 (0.42, 1.60) | ||
| 60min × 1/wk | 1.07 (0.58, 1.98) | 0.88 (0.48, 1.64) | ||
| 60min × 2/wk | 1.23 (0.69, 2.19) | 1.02 (0.57, 1.82) | ||
| 60min × 3/wk | 1.41 (0.83, 2.41) | 1.17 (0.67, 2.05) | ||
| Booster Treatment | ||||
| No Further Treatment | 1.00 | 1.00 | ||
| Booster Treatment | 1.62 (1.11, 2.35) | 0.012 | 1.56 (1.08, 2.25) | 0.018 |
| 26 WEEK OUTCOME | ||||
| 26 versus 12 week | 1.15 (0.77, 1.73) | 0.496 | 1.15 (0.76, 1.72) | 0.508 |
| Primary Treatment | ||||
| 30min × 2/wk | 1.00 | 1.00 | ||
| 30min × 3/wk | 1.06 (0.56, 2.02) | 0.90 (0.48, 1.68) | ||
| 60min × 1/wk | 1.28 (0.72, 2.26) | 1.05 (0.58, 1.88) | ||
| 60min × 2/wk | 1.24 (0.70, 2.19) | 1.02 (0.60, 1.76) | ||
| 60min × 3/wk | 0.95 (0.51, 1.80) | 0.80 (0.42, 1.52) | ||
| Booster Treatment | ||||
| No Further Treatment | 1.00 | 1.00 | ||
| Booster Treatment | 1.26 (0.87, 1.83) | 0.228 | 1.22 (0.85, 1.74) | 0.277 |
|
| ||||
| NECK PAIN INTENSITY | ||||
|
| ||||
| 12 WEEK OUTCOME | ||||
| Primary Treatment | ||||
| 30min × 2/wk | 1.00 | 1.00 | ||
| 30min × 3/wk | 1.32 (0.85, 2.06) | 1.21 (0.79, 1.87) | ||
| 60min × 1/wk | 0.86 (0.51, 1.45) | 0.78 (0.47, 1.31) | ||
| 60min × 2/wk | 1.21 (0.78, 1.87) | 1.10 (0.72, 1.68) | ||
| 60min × 3/wk | 1.56 (1.06, 2.29) | 1.43 (0.97, 2.11) | ||
| Booster Treatment | ||||
| No Further Treatment | 1.00 | 1.00 | ||
| Booster Treatment | 1.30 (1.01, 1.68) | 0.042 | 1.25 (0.98, 1.61) | 0.077 |
| 26 WEEK OUTCOME | ||||
| 26 versus 12 week | 1.24 (0.90, 1.71) | 0.189 | 1.24 (0.90, 1.72) | 0.189 |
| Primary Treatment | ||||
| 30min × 2/wk | 1.00 | 1.00 | ||
| 30min × 3/wk | 1.25 (0.85, 1.82) | 1.13 (0.78, 1.65) | ||
| 60min × 1/wk | 0.83 (0.52, 1.32) | 0.75 (0.47, 1.19) | ||
| 60min × 2/wk | 0.75 (0.46, 1.22) | 0.68 (0.43, 1.08) | ||
| 60min × 3/wk | 0.98 (0.64, 1.49) | 0.89 (0.57, 1.38) | ||
| Booster Treatment | ||||
| No Further Treatment | 1.00 | 1.00 | ||
| Booster Treatment | 1.13 (0.85, 1.50) | 0.398 | 1.09 (0.82, 1.43) | 0.558 |
*
Unadjusted model includes a main effect for each first randomization treatment assignment and a main effect for booster treatment assignment (i.e. No interaction included between first and booster treatment assignment)
**
Adjusted model further adjusts for baseline NDI and NPI, age, sex, duration of neck pain > 5 years, use of medications for NP, and race (White Non-hispanic vs. other).