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Table 6 Correlation between EQ VAS score, EQ-5D index and scores of other measures

From: Validity and responsiveness of the EQ-5D in assessing and valuing health status in patients with somatoform disorders

Other measures   Correlation EQ VAS score Correlation EQ-5D index UK Correlation EQ-5D index D
Symptoms PHQ-15
Sum score −0.468 −0.448** −0.392**
PHQ-9
Sum score −0.489 −0.474** −0.345**
Illness worries WI-7
Sum score −0.471 −0.431** −0.331**
Health-related quality of life SF-36
Physical component score 0.589 0.574 ** 0.636 **
Mental component score 0.470 0.441** 0.221**
 Physical functioning 0.538 0.567 ** 0.600 **
 Role physical 0.423 0.467** 0.386**
 Bodily pain 0.599 0.579 ** 0.595 **
 General health perceptions 0.633 0.509 ** 0.464**
 Vitality 0.586 0.555 ** 0.412**
 Social functioning 0.564 0.530 ** 0.381**
 Role emotional 0.382 0.436** 0.254**
 Mental health 0.517 0.477** 0.308**
  1. Large correlations (|rs| ≥ 0.5) are printed bold; * p < 0.0038; ** p < 0.001; the number of observations used for the calculation was 286 ≤ n ≤ 293, subject to missing values; the correlation of the EQ VAS score with the EQ-5D index UK was |rs| = 0.669 (p < 0.001); the correlation of the EQ-VAS with the EQ-5D index-D was |rs| = 0.635 (p < 0.001); the correlation of the EQ-5D index UK with the EQ-5D index D was 0.886 (p < 0.001). This analysis is based on baseline data.