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Table 3 Comparison of post-treatment values of outcome variables between both groups in each follow-up peroid

From: Comparison of single-dose radial extracorporeal shock wave and local corticosteroid injection for treatment of carpal tunnel syndrome including mid-term efficacy: a prospective randomized controlled trial

Outcome variable Follow-up sessions Coefficeint (rESWTa VS LCsIb) p value 95% CI
Visual analogue scale Baseline to week 1 −0.10 0.90 −1.7 to 1.5
Week 1 to week 4 0 .049 0.95 − 1.6 to 1.7
Week 4 to week 12 −1.0 0.23 −2.7 to 0.63
Week 12 to week 24 −1.2 0.17 − 2.9 to 0.49
Symptom severity score Baseline to week 1 2.6 0.27 −2.0 to 7.2
Week 1 to week 4 1.5 0.53 −3.2 to 6.1
Week 4 to week 12 −1.9 0.43 −6.5 to 2.8
Week 12 to week 24 −5.1 0.036* −9.8 to −0.33
Functional score Baseline to week 1 0.43 0.81 −3.1 to 3.9
Week 1 to week 4 −0.20 0.91 −3.7 to 3.3
Week 4 to week 12 −1.8 0.32 −5.3 to 1.7
Week 12 to week 24 −4.5 0.015* −8.1 to −0.87
Boston questionnaire score Baseline to week 1 3.0 0.43 −4.5 to 11
Week 1 to week 4 1.3 0.74 −6.2 to 8.8
Week 4 to week 12 −3.7 0.34 −11 to 3.8
Week 12 to week 24 −9.5 0.015* −17 to − 1.9
Peak sensory distal latency Baseline to week 12 −0.24 0.022* − 0.44 to − 0.034
SNAPc amplitude Baseline to week 12 −2.8 0.36 −8.9 to 3.2
Motor distal latency Baseline to week 12 −0.038 0.84 −0.41 to 0.33
CMAPd amplitude Baseline to week 12 −0.44 0.34 −1.4 to 0.46
  1. *p < 0.05
  2. arESWT = Radial extracorporeal shockwave therapy
  3. bLCsI = Local corticosteroid injection
  4. cSNAP = Sensory nerve action potential
  5. dCMAP = Compound muscle action potential