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Table 7 Known-groups validity of the EQ-5D and PGWB Global Score: Comparisons between groups of patients

From: Validation of two generic patient-reported outcome measures in patients with type 2 diabetes

Variable Used to Differentiate Groups Groups EQ-5D Index Score EQ-5D VAS PGWB Global Score
   Mean t Value Mean t Value Mean t Value
ADS Median Split ADS Score ≤ 16
(n = 58)
0.88 5.1*** 76.7 5.0*** 78.9 7.3***
  ADS Score > 16
(n = 72)
0.65   62.5   59.0  
DSC-R Median Split DSC-R Total Score ≤ 0.7
(n = 61)
0.91 6.6*** 78.8 7.0*** 79.6 8.2***
  DSC-R Total Score > 0.7
(n = 69)
0.61   60.0   57.5  
Preference for Weight Change Lose weight
(n = 113)
0.73 -4.4*** 66.7 -5.0*** 66.5 -2.0*
  Stay same
(n = 16)
0.92   83.0   76.9  
Experienced Hypoglycemia During the Day Yes
(n = 53)
0.68 -2.6* 62.6 -3.4*** 64.0 -2.3*
  No
(n = 74)
0.82   73.9   71.8  
Experienced Hypoglycemia During the Night Yes
(n = 23)
0.60 -3.2** 64.2 -1.5 58.8 -3.0**
  No
(n = 101)
0.80   70.6   71.0  
Experienced Hyperglycemia Yes
(n = 64)
0.73 -1.1 64.5 -2.8** 64.9 -2.1*
  No
(n = 63)
0.78   73.4   71.6  
Type of Treatment Injectable
(n = 31)
0.65 -1.8 61.4 -2.0 62.6 -1.3
  Oral only
(n = 85)
0.78   70.2   68.9  
  1. ADS = Appraisal of Diabetes Scale; DSC-R = Diabetes Symptom Checklist – Revised; PGWB = Psychological General Well-Being Index; VAS = Visual Analog Scale; *p < 0.05; **p < 0.01; ***p < 0.001