Paired Differences t-test Effect Size
  Diff. Mean (95% CI) Diff. Std. Deviation t df Sig. (2 tailed) Cohen’s d
Total score unaided - aided 24.8(17.5-32.0) 13.6 7.289 15 *0.0001 1.82
  Wilcoxon Signed Ranks Test  
        Z   Asymp. Sig. (2 tailed)  
VAS unaided - aided -- -- -2.937 -- *0.003 --
Table 3: THI total score and VAS Paired Comparisons (n=16).