Skip to main content

Table 4 Statistical evaluation of the outcome measures by the comparisons

From: The immediate effect of a soft knee brace on pain, activity limitations, self-reported knee instability, and self-reported knee confidence in patients with knee osteoarthritis

  Brace vs. no brace P value Tight brace vs. no brace P value Non-tight brace vs. no brace P value Non-tight vs. tight brace P value
Outcomes, B (95% CI)a
 Pain, level walk −0.60 (−0.97–0.23) 0.001* −0.60 (−1.01–0.06) 0.028* –0.60 (−1.01–0.07) 0.026* −0.24 (−0.77 0.29) 0.37
 Pain, perturbed walk −0.80 (−1.11–0.43) <0.001** −0.75 (−1.31–0.02) 0.012* −0.86 (−1.36–0.36) 0.001* −0.21 (−0.44 0.30) 0.41
 10 m walk test −0.23 (−0.31–0.13) <0.001** –0.22 (−0.33–0.10) <0.001** −0.23 (−0.31–0.14) <0.001** 0.11 (0.01 0.20) 0.03*
 GUG test −0.23 (−0.38–0.07) 0.004* −0.08 (−0.25 0.08) 0.335 −0.38 (−0.57–0.17) <0.001** 0.12 (−0.03 0.27) 0.13
Outcomes, OR (95% CI)b
 Knee instability, level walk 0.41 (0.23 0.66) 0.002* 0.37 (0.19 0.68) 0.002* 0.46 (0.22 0.93) 0.018* 1.06 (0.65 1.73) 0.79
 Knee instability, perturbed walk 0.36 (0.22 0.59) <0.001** 0.34 (0.18 0.62) 0.001* 0.39 (0.22 0.67) 0.001* 1.15 (0.66 2.0) 0.59
 Knee confidence, level walk 0.45 (0.31 0.65) <0.001** 0.48 (0.31 0.74) 0.001* 0.42 (0.27 0.65) <0.001** 1.07 (0.75 1.51) 0.69
 Knee confidence, perturbed walk 0.56 (0.38 0.82) <0.001** 0.62 (0.35 0.77) 0.004* 0.63 (0.40 0.96) 0.033* 0.97 (0.60 1.56) 0.91
  1. aBeta (B) coefficients (95% CI): negative value indicates reduced mean value of the outcome measure when wearing a brace
  2. bOdds ratios (OR) (95% CI): value <1 indicates reduced chance of self-reported knee instability and lack of confidence in the knees when wearing a brace
  3. *Significant at a P value <0.05; **significant at a P value <0.001