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Table 3 Health status (as measure by the SF-39): estimated marginal means for baseline and eighteen weeks by group and estimated change within and between groups

From: The effect of a sports chiropractic manual therapy intervention on the prevention of back pain, hamstring and lower limb injuries in semi-elite Australian Rules footballers: a randomized controlled trial

Variable Baseline 18 weeks Δ within groups Δ between groups
   intervention control intervention control intervention control mean p-value
Physical functioning % at 100 65.50 60.00 55.60 33.30 -2.412 -4.262 1.852 .569
  95%CI 48.20, 82.80 42.47, 77.53 36.86, 74.34 15.52, 51.08 -5.72, 0.90 -11.59, 3.07 -6.08, 9.79  
Role limitation-physical % at 100 72.40 80.00 85.20 40.70 9.262 -18.522 27.782 .004
  95%CI 56.13, 88.67 65.69, 94.31 71.81, 98.59 22.17, 59.23 -2.43, 20.94 -31.84, -5.20 10.48, 45.08  
Bodily pain Mean 69.67 72.56 74.22 65.26 4.56 -7.30 11.85 .034
  95%CI 63.68, 75.66 66.57, 78.55 67.43, 81.01 58.47, 72.05 -4.09, 13.21 -14.36, -0.24 0.95, 22.75  
General health Mean 81.30 79.00 83.96 74.52 2.67 -4.48 7.15 .027
  95%CI 76.51, 86.08 74.22, 83.78 78.51, 89.42 69.06, 79.97 -2.53, 7.86 -10.27, 1.31 -0.45, 14.74  
Vitality Mean 60.37 61.11 67.04 59.44 6.67 -1.67 8.33 .050
  95%CI 53.90, 66.84 54.64, 67.59 61.67, 72.40 54.08, 64.81 -0.57, 13.90 -9.15, 5.81 -1.83, 18.49  
Social functioning % at 100 51.70 53.30 58.10 44.40 0.462 -5.092 5.562 .770
  95%CI 33.51, 69.89 35.45, 71.15 39.49, 76.71 25.66, 63.14 -4.76, 5.68 -11.56, 1.38 -2.56, 13.67  
Role limitation-emotional % at 100 75.90 83.30 92.60 66.70 8.642 -6.172 14.812 .142
  95%CI 60.33, 91.47 69.95, 96.65 82.73, 102.47 48.92, 84.48 -0.75, 18.03 -16.54, 4.20 1.16, 28.47  
Mental health Mean 77.63 77.93 76.59 71.11 -1.04 -6.81 5.78 .151
  95%CI 72.50, 82.76 72.80, 83.06 71.61, 81.57 66.13, 76.09 -6.60, 4.52 -12.78, -0.85 -2.18, 13.74  
Physical summary score Mean 52.66 52.03 53.80 49.06 1.15 -2.97 4.12 .013
  95%CI 50.63, 54.68 50.00, 54.06 51.76, 55.85 47.01, 51.10 -1.14, 3.43 -5.36, -0.58 0.89, 7.35  
Mental summary score Mean 50.04 50.55 51.41 48.48 1.37 -2.07 3.45 .103
  95%CI 47.21, 52.87 47.72, 53.38 49.00, 53.83 46.06, 50.89 -1.38, 4.12 -5.34, 1.19 -0.72, 7.61  
Depression % at 100 58.60 73.30 85.20 59.30 9.892 -3.702 13.592 .050
  95%CI 40.67, 76.53 57.47, 89.13 71.81, 98.59 40.77, 77.83 1.87, 17.90 -12.15, 4.74 2.23, 24.96  
  1. * Bold type face indicates significant difference between groups at 18 weeks.