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Table 3 Differences between lifestyle physical activity (LPA) and fibromyalgia education (FME) groups on the primary and secondary study measuresa

From: Effects of lifestyle physical activity on perceived symptoms and physical function in adults with fibromyalgia: results of a randomized trial

Variable   Mean ± SD Mean difference between groups at baseline and at 12-weeks (95% CI) PValue Cohen's d
  N LPA FME    
FM impact questionnaire       
   Baseline 84 67.5 ± 12.0 69.7 ± 13.4 2.2 (-3.3 to 7.8) 0.424 .17
   Post intervention 73 56.7 ± 20.6 67.0 ± 18.6 10.2 (.91 to 19.6) 0.032 .53
Pain       
   Baseline 84 54.6 ± 25.6 58.9 ± 25.0 4.3 (-7.2 to 14.9) 0.489 .17
   Post intervention 73 46.3 ± 24.2 62.4 ± 24.5 16.1 (4.6 to 27.5) 0.006 .67
Fatigue severity scale       
   Baseline 84 51.9 ± 9.3 52.3 ± 9.1 .4 (-3.6 to 4.4) 0.843 .04
   Post intervention 73 50.6 ± 9.9 51.4 ± 10.1 .8 (-3.9 to 5.5) 0.727 .07
CES-D*       
   Baseline 84 23.4 ± 8.6 24.0 ± 10 .6 (-3.8 to 4.5) 0.798 .06
   Post intervention 73 21.6 ± 9.8 21.2 ± 11.3 .4 (-5.3 to 4.6) 0.888 .04
Number of tender points       
   Baseline 84 16.2 ± 2.3 16.1 ± 3.2 .1 (-1.2 to 1.0) 0.979 .03
   Post intervention 72 16.0 ± 2.3 16.8 ± 2.0 .8 (-.35 to 1.9) 0.172 .37
Body mass index (BMI)       
   Baseline 82 31.4 ± 8.4 29.8 ± 6.2 1.6 (-4.7 to 1.7) 0.360 .22
   Post intervention 60 31.0 ± 9.0 29.9 ± 6.2 1.1 (-5.3 to 2.9) 0.575 .14
Six-minute walk test, yd/sec       
   Baseline 77 1.08 ± 0.15 1.08 ± 0.19 .0004 (-0.78 to 0.79) 0.991 0
   Post intervention 62 1.24 ± 0.28 1.11 ± 0.20 1.21 (-0.25 to 0.008) 0.067 .53
  1. * Center for Epidemiologic Studies Depression Scale; a between-subjects t-tests were used to derive P values; bCohen's d [19] effect size estimates (d = .20 (small effect); d = .50 (medium effect); d = .80 (large effect)).
  2. FME, fibromyalgia education; LPA, lifestyle physical activity