Table 2 Aggregated outcome measure data (from active phototherapy intervention and placebo control groups) at all assessment time-points
Measures | Baseline (week 0) | Visit 4 (week2) | Visit 8 (week 4) | 4-week follow-up (week 8) | 8-week follow-up (week 12) | 12-week follow-up (week 16) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | Mean | SD | N | Mean | SD | N | Mean | SD | N | Mean | SD | N | Mean | SD | N | Mean | SD | |
SPA (peak pain–baseline pain) | ||||||||||||||||||
Pre | 20 | 2.17 | 1.18 | 16 | 0.81 | 0.75 | 15 | 0.60 | 1.24 | – | – | – | – | – | – | – | – | – |
Post | 20 | 1.33 | 1.15 | 16 | 0.56 | 0.81 | 15 | 0.53 | 1.13 | – | – | – | – | – | – | – | – | – |
Pain severity index | ||||||||||||||||||
Worst | 20 | 4.75 | 2.15 | 16 | 3.37 | 2.27 | 15 | 3.00 | 1.81 | 19 | 3.11 | 2.73 | 18 | 3.17 | 2.77 | 19 | 3.11 | 2.75 |
At least | 20 | 1.70 | 1.63 | 16 | 0.69 | 1.07 | 15 | 0.20 | 0.41 | 19 | 1.37 | 2.45 | 18 | 1.39 | 2.42 | 19 | 1.16 | 2.36 |
Average | 20 | 3.55 | 1.50 | 16 | 1.81 | 1.47 | 15 | 1.20 | 1.01 | 19 | 2.42 | 2.36 | 18 | 2.17 | 2.36 | 19 | 2.00 | 2.33 |
Right now | 20 | 2.95 | 2.01 | 16 | 1.81 | 1.94 | 15 | 0.93 | 1.62 | 19 | 1.63 | 2.81 | 18 | 1.83 | 2.87 | 19 | 1.79 | 3.01 |
Index | 20 | 3.24 | 1.61 | 16 | 1.92 | 1.45 | 15 | 1.33 | 0.90 | 19 | 2.13 | 2.53 | 18 | 2.14 | 2.52 | 19 | 2.01 | 2.48 |
WOMAC | ||||||||||||||||||
Pain | 20 | 6.30 | 2.34 | 16 | 4.31 | 2.44 | 15 | 3.60 | 2.35 | 19 | 4.58 | 3.77 | 18 | 5.00 | 4.11 | 19 | 4.53 | 4.03 |
Stiffness | 20 | 3.10 | 1.70 | 16 | 2.25 | 1.53 | 15 | 1.67 | 1.11 | 19 | 2.89 | 1.62 | 18 | 2.67 | 1.97 | 19 | 1.79 | 1.75 |
Physical Function | 20 | 22.95 | 9.72 | 16 | 15.81 | 10.52 | 15 | 9.913 | 6.81 | 19 | 17.32 | 16.66 | 18 | 17.83 | 16.99 | 19 | 13.63 | 14.79 |
Total | 20 | 32.35 | 12.00 | 16 | 22.38 | 13.63 | 15 | 14.40 | 9.32 | 19 | 24.79 | 21.11 | 18 | 25.50 | 22.49 | 19 | 19.95 | 20.14 |
GROC Function | – | – | – | 16 | 7.19 | 1.05 | 15 | 8.27 | 1.44 | 19 | 7.42 | 2.01 | 18 | 7.78 | 2.16 | 19 | 8.32 | 1.67 |
GROC Pain | – | – | – | 16 | 6.87 | 1.26 | 15 | 8.00 | 1.65 | 19 | 7.21 | 2.07 | 18 | 7.61 | 2.09 | 19 | 7.89 | 1.91 |
Satisfaction | – | – | – | 16 | 10.25 | 1.29 | 15 | 10.33 | 0.76 | 19 | 9.84 | 1.97 | 18 | 9.56 | 2.50 | 19 | 9.84 | 1.74 |
6MWT (m) | ||||||||||||||||||
Pre | 20 | 356.88 | 100.58 | 16 | 421.61 | 82.18 | 15 | 450.61 | 72.17 | – | – | – | – | – | – | – | – | – |
Post | 20 | 360.20 | 97.29 | 16 | 417.77 | 80.83 | 15 | 465.18 | 82.50 | – | – | – | – | – | – | – | – | – |
Pressure pain threshold–mean of eight peripatellar sites (N) | ||||||||||||||||||
Most painful knee | 20 | 49.18 | 34.00 | – | – | – | 15 | 59.03 | 27.19 | – | – | – | – | – | – | – | – | – |
Least painful knee | 20 | 52.40 | 34.94 | – | – | – | 15 | 64.76 | 47.72 | – | – | – | – | – | – | – | – | – |
Pressure pain threshold – standard site over tibialis anterior (N) | ||||||||||||||||||
Most painful knee | 20 | 42.68 | 28.68 | – | – | – | 15 | 47.37 | 25.02 | – | – | – | – | – | – | – | – | – |
Least painful knee | 20 | 43.73 | 27.08 | – | – | – | 15 | 56.27 | 23.44 | – | – | – | – | – | – | – | – | – |