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Table 4 Odds ratio for knee pain based on quadriceps muscle strength

From: Quadriceps muscle strength, radiographic knee osteoarthritis and knee pain: the ROAD study

  Right knee Left knee
  OR 95 % CI P value OR 95 % CI P value
Men       
  < 10 kgf 5.87 1.46–23.5 0.0131 4.00 1.002–15.4 0.0497
  ≥ 10- < 20 kgf 2.26 1.08–4.83 0.0312 3.03 1.30–7.59 0.0096
  ≥ 20- < 30 kgf 0.95 0.48–1.92 0.8909 1.39 0.61–3.44 0.4405
  ≥ 30- < 40 kgf 1.14 0.56–2.32 0.7230 1.74 0.79–4.16 0.1771
  ≥ 40 kgf 1    1   
Women       
  < 10 kgf 2.78 1.28–6.13 0.0095 2.00 0.93–4.45 0.0783
  ≥ 10- < 20 kgf 1.82 1.01–3.42 0.0452 1.49 0.79–2.94 0.2253
  ≥ 20- < 30 kgf 1.7 0.98–3.10 0.0612 1.03 0.56–2.00 0.9227
  ≥ 30- < 40 kgf 1.11 0.62–2.08 0.7274 0.91 0.48–1.80 0.7879
  ≥ 40 kgf 1    1   
  1. OR Odds ratio, CI Confidence interval