Fig. 2From: Test-retest reliability and measurement error of the Danish WHO-5 Well-being Index in outpatients with epilepsyDifferences in the WHO-5 Well-being Index score between test 1 and test 2 plotted against the mean in the four test-retest groups: web-web (n = 164), paper-paper (n = 107), web-paper (n = 233), and paper-web (n = 36)Back to article page