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Table 2 Effect of a Physical exercise programme (PEP) vs Care as usual (CAU) on general health and mental health (SF-36 score) at 6 and 12 weeks vs Baseline, using Analysis of covariance (ANCOVA) *

From: Exercise therapy for Stress-related mental disorder, a randomised controlled trial in primary care

  General Health Mental health
  PEP CAU Difference (95% BI) Effect size (95% BI) PEP CAU Difference (95% BI) Effect size (95% BI)
Baseline 49.9 (20.6) 53.7 (20.5)    39.8 (18.4) 45.0 (17.7)   
6 weeks 54.6 (22.1) 57.5 (19.2)    56.3 (16.1) 56.6 (14.5)   
ANCOVA    -1.2 (-8.5,6.2) -0.06 (-0.41, 0.30)    1.2 (-4.5,6.9) 0.07 (-0.25, 0.38)
12 weeks 52.9 (22.2) 61.0 (20.7)    53.9 (18.9) 60.7 (16.1)   
ANCOVA    -5.7 (-12.7,1.2) -0.26 (-0.62, 0.06)    -5.3 (-12.0,1.4) -0.29 (-0.66, 0.08)
  1. * ANCOVA analysis of covariance; Values are means (SD) unless indicated otherwise. 95% BI 95%-confidence interval; Effect size is Cohen's d; PEP = physical exercise programme; CAU = care as usual.