n Baseline mean 3-month mean mean change standard deviation of difference p Effect sizea
Depression 24 7.75 6.00 -1.75 3.57 0.016* 0.49
Fatigue 31 3.90 3.39 -0.51 2.10 0.180 0.25
Pain - total 31 56.4 51.0 -5.33 18.08 0.117 0.29
Pain - average 30 4.20 3.83 0.367 1.866 0.291 0.20
Pain - discomfort 31 3.42 3.16 -0.258 1.064 0.140 0.24
Pain - duration 31 3.90 3.55 -0.355 1.780 0.226 0.20
Pain - frequency 30 4.00 3.47 -0.533 1.358 0.038* 0.39
Pain - worst 30 5.20 4.73 0.467 2.285 0.273 0.20
HAQ Disability Index 31 0.327 0.315 0.012 0.276 0.549 0.04
EQ5D Index 31 0.778 0.799 0.021 0.134 0.183 0.16
Self-rated Health 28 68.86 72.75 3.893 18.546 0.298 0.21
a Effect sizes are Cohen’s “d” (small = 0.20, medium = 0.40, large = 0.80)
*p < 0.05
Table 2: Mean scores on health questionnaires.