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Table 1 IDGP: Reproducibility (test- retest reliability).

From: Identifying dyspepsia in the Greek population: translation and validation of a questionnaire

DIAGNOSTIC CATEGORIES K+ ITEM K+
Dyspepsia 0.67 1 0.724
   4 0.609
   18 0.603
Frequent dyspepsia 0.61 2 0.358
   5 0.694
   19 0.691
GERD like symptoms 0.69 7 0.746
   10 0.694
   13 0.314
   14 0.730
   15 0.652
   21 0.658
   24 0.749
Frequent GERD like symptoms 0.71 8 0.700
   11 0.742
   16 0.698
   22 0.444
Consultation behaviour 0.49 3 0.413
   6 0.405
   9 0.336
   12 0.481
   17 0.688
   20 0.306
   23 0.278
   26 0.722
Investigation for organic gastric disease 0.80 28 0.653
   29 0.950
Past diagnosis of stomach or duodenal ulcer 27 0.688
Open question 30 0.615
  1. +: Kappa coefficient