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Table 5 Known-Groups Validity of the DID-EQ: ANOVA by Item #1 of the DTSQ

From: Psychometric evaluation of the Diabetes Injection Device Experience Questionnaire (DID-EQ) and Diabetes Injection Device Preference Questionnaire (DID-PQ)

  DTSQ Item #1: How satisfied are you with your current treatment?a  
DID-EQ 6 (n = 67) Mean (SD) 5 (n = 67) Mean (SD) 4 (n = 27) Mean (SD) <=3 (n = 13) Mean (SD) Pairwise Comparisonp valuesb
Device Characteristics 89.1 (12.9) 82.4 (14.0) 73.5 (16.5) 72.5 (18.5) A: 0.19; B: 0.0001; C: 0.0035; D: 0.13; E: 0.22; F: 0.10
Global Items
 Satisfaction 3.78 (0.42) 3.40 (0.74) 3.26 (0.59) 2.85 (0.69) A: 0.02; B: 0.0018; C: < 0.0001; D: 0.82; E: 0.03; F: 0.21
 Ease of Use 3.76 (0.46) 3.60 (0.55) 3.19 (0.62) 2.92 (0.64) A: 0.56; B: 0.0001; C: < 0.0001 D: 0.03; E: 0.0024; F: 0.55
 Convenience 3.76 (0.46) 3.49 (0.56) 3.22 (0.58) 3.00 (0.58) A: 0.099; B: 0.0002; C: < 0.0001 D: 0.28; E: 0.046; F: 0.66
  1. a Higher DTSQ scores indicate greater satisfaction
  2. bANOVA with Scheffe’s post-hoc comparisons of DID-EQ scores between subgroups of participants categorized based on scores on DTSQ item #1 (A: DTSQ item #1 score of 6 vs. 5; B: 6 vs. 4; C: 6 vs. <=3; D: 5 vs. 4; E: 5 vs. <=3; F: 4 vs. <=3)