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Table 1 WOMAC index and SF-36 Health Survey scores following 6 months of treatment

From: A non-invasive biomechanical device and treatment for patients following total hip arthroplasty: results of a 6-month pilot investigation

  Baseline 4 weeks 12 weeks 26 weeks  
Mean 95% CI Mean 95% CI Mean 95% CI Mean 95% CI P valuea
Lower bound Upper bound Lower bound Upper bound Lower bound Upper bound Lower bound Upper bound  
WOMAC index (0–100)              
 Pain 17.1 (22.2) 6.1 28.1 7.9 (12.2) 1.8 13.9 5.1 (8.0) 1.1 9.1 2.5 (2.9) 1.0 3.9 P = 0.007
 Stiffness 20.6 (18.5) 11.4 29.9 12.6 (16.4) 4.4 20.7 8.0 (14.9) 0.6 15.4 3.9 (6.7) 0.5 7.2 P = 0.006
 Function 32.5 (19.1) 23.0 42.0 13.4 (15.0) 6.0 20.9 10.9 (14.7) 3.6 18.2 7.8 (11.4) 2.1 13.4 P < 0.001
SF-36 Health Survey (0–100)              
 Physical scale 49.3 (21.3) 39.0 59.5 59.9 (22.3) 49.2 70.7 69.6 (19.0) 60.4 78.7 75.0 (16.6) 67.0 83.1 P < 0.001
 Mental scale 59.1 (21.6) 48.7 69.6 71.1 (18.5) 62.2 80.0 81.4 (12.6) 75.3 87.4 83.2 (15.3) 75.8 90.5 P < 0.001
  1. aP value was set to P < 0.05. Results are presented as mean (SD) and 95% confidence interval (CI).