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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