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Table 6 Construct validity assessment of the Spanish PRWE

From: The Spanish version of the Patient-Rated Wrist Evaluation outcome measure: cross-cultural adaptation process, reliability, measurement error and construct validity

Time

r (95% CI)a

tb

P value

Baseline

 QuickDASH

0.71 (0.51 to 0.84)

6.19

<0.001

 EQ-5D

−0.45 (−0.16 to −0.67)

3.10

0.004

8 weeks

 QuickDASH

0.79 (0.64 to 0.88)

8.05

<0.001

 EQ-5D

−0.40 (−0.11 to −0.64)

2.75

0.01

  1. Abbreviations: CI, confidence interval; r, Spearman’s rho coefficient of correlation
  2. aCorrelations between PRWE score and QuickDASH score and between PRWE score and EQ-5D index at baseline and at 8 weeks
  3. bContrast statistic that follows the Student-Fisher law with n-2 degrees of freedom