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Table 3 Concurrent validity (correlations) between Dementia Quality of life Instrument (DQI) and EQ-5D + C in patients and caregivers

From: Validation study of the prototype of a disease-specific index measure for health-related quality of life in dementia

EQ-5D + C domains

DQI domains

Memory

Orientation

Independence

Social activities

Mood

N

Assessment of caregivers on patients

Mobility

0.27**

0.13

0.23**

0.07

0.11

145

Self-care

0.26**

0.19*

0.42**

0.05

0.18*

145

Usual activities

0.36**

0.25**

0.46**

0.22**

0.15

145

Pain/discomfort

0.12

0.17*

0.06

−0.09

0.18*

145

Depression/anxiety

−0.04

0.01

0.05

0.12

0.50**

145

Cognition

0.49**

0.36**

0.39**

0.11

0.19*

143

Self assessment of patients

Mobility

0.24**

0.09

0.22**

0.09

−0.06

139

Self-care

0.22**

0.20*

0.30**

0.10

0.01

139

Usual activities

0.17*

0.20*

0.29**

−0.02

0.15

140

Pain/discomfort

0.10

0.19*

−0.03

−0.01

0.01

140

Depression/anxiety

−0.05

0.01

0.03

−0.13

0.20*

140

Cognition

0.35**

0.32**

0.20*

−0.09

0.05

139

  1. *Correlation is significant at the 0.05 level (2-tailed).
  2. **Correlation is significant at the 0.01 level (2-tailed).