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Table 2 Correlations as measures of concurrent and predictive validities for EQ-5D-5L and SF-6D utilities

From: Validity and responsiveness of EQ-5D-5L and SF-6D in patients with health complaints attributed to their amalgam fillings: a prospective cohort study of patients undergoing amalgam removal

  EQ-5D-5L EQ-5D-CW SF-6D
Concurrent validity
Baseline
 GHCr-index 0.48 0.46 0.42
 EQ-VAS 0.74 0.68 0.70
Follow-up
 GHCr-index 0.52 0.56 0.50
 EQ-VAS 0.55 0.58 0.64
Predictive validitya
GHCr-index 0.25 0.22 0.31
EQ-VAS 0.31 0.28 0.46
  1. aCorrelations between utility instruments at baseline and criteria variables at follow-up, which are classified as weak (ρ < 0.25), fair (0.25 to 0.50), good (0.50 to 0.75), and excellent (> 0.75). EQ-5D-5L EuroQol 5-dimensional 5-level questionnaire; EQ-5D-CW EQ-5D cross-walk value set; SF-6D Short-form 6-dimension; GHCr (reversed) general health complaints; EQ-VAS, (EuroQol) visual analogue scale