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Table 4 Patient reported outcome measures (PROM’s) changes in knee OA patients after 3 and 6 months of treatment. Results are presented as mean (SD) [95% CI]

From: The effect of treatment with a non-invasive foot worn biomechanical device on subjective and objective measures in patients with knee osteoarthritis- a retrospective analysis on a UK population

  Baseline 3 months 6 months P-value*
WOMAC**
 Total 41.40 (19.68)
[39.58–43.21]
25.32 (19.13)
[23.56–27.08]
22.28 (18.13)
[20.61–23.96]
< 0.001
 Pain subscale 46.71 (18.86)
[44.97–48.44]
27.42 (19.72)
[25.60–29.24]
23.99 (18.94)
[22.25–25.74]
< 0.001
 Function subscale 38.97 (21.56)
[36.98–40.96]
24.07 (19.78)
[22.25–25.9]
21.16 (18.50)
[19.45–22.86]
< 0.001
 Stiffness subscale 48.74 (25.92)
[46.35–51.13]
30.71 (25.92)
[28.48–32.95]
27.59 (23.15)
[25.45–29.72]
< 0.001
SF-36***
 Total 53.49 (16.08)
[52.01–54.97]
62.60 (16.57)
[61.08–64.13]
65.22 (16.87)
[63.67–66.78]
< 0.001
 Physical Component Summary (PCS) 45.67 (18.36)
[43.98–47.36]
57.71 (19.85)
[55.88–59.54]
61.37 (20.04)
[59.52–63.21]
< 0.001
 Mental Component Summary (MCS) 64.02 (19.49)
[62.23–65.82]
72.30 (18.18)
[70.63–73.98]
73.64 (18.12)
[71.97–75.31]
< 0.001
  1. *P-value was set to P < 0.05. **Western Ontario and McMaster Universities Index (WOMAC Index). The WOMAC questionnaire includes 24 questions in a Visual Analogue Scale (VAS) format (0 = no pain/stiffness/difficulty, 100 = severe pain/stiffness/difficulty). ***SF-36 Health Survey includes 36 questions. Results range between 0 and 100 (0 = poor quality of life, 100 = high quality of life)
  2. Repeated measure ANOVA’s were performed for the differences between the outcomes, measured at baseline, 3 and 6 months into treatment. Significant differences were found between baseline and 3 months and baseline and 6 months