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Table 3 Significant correlations

From: Effects of preoperative neuromuscular electrical stimulation on quadriceps strength and functional recovery in total knee arthroplasty. A pilot study

Comparison p value r value
Quads Strength and TWT   
Baseline 0.003 -0.688
Week 6 0.003 -0.697
Week 12 0.005 -0.662
Quads Strength and TST   
Baseline 0.008 -0.626
Preoperative 0.020 -0.552
Week 6 0.009 -0.618
Week 12 0.001 -0.776
Quads Strength and TCT   
Preoperative 0.032 -0.508
WOMAC-Pain and TCT   
Baseline 0.047 0.464
WOMAC-Function and TWT   
Baseline 0.034 0.252
SF36-Physical Health and TWT   
Baseline 0.009 -0.623
Week 12 0.041 -0.481
SF36-Physical Health and TST   
Preoperative 0.039 -0.487
SF36-Mental Health and TCT   
Week 12 0.026 -0.528
  1. p value - significance level
  2. r value - correlation coefficient
  3. WOMAC - Western Ontario McMaster Osteoarthritis Index
  4. SF-36 - Short Form 36
  5. CSA = Cross-sectional area
  6. TWT = 25-metre timed walk test/TST = Timed stair-climb test/TCT = Timed chair-rise test