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Table 4 Correlations between RDQ scale scores and clinical severity assessments at baseline and visit 2

From: The Reflux Disease Questionnaire: a measure for assessment of treatment response in clinical trials

RDQ Scale Clinical Severity Assessment
  Regurgitation Heartburn Dyspepsia GERD
Baseline
Regurgitation 0.54 0.14 0.09 0.51
Heartburn 0.21 0.33 0.20 0.29
Dyspepsia 0.26 0.17 0.47 0.18
GERDa 0.51 0.29 0.18 -
Visit 2
Regurgitation 0.63 0.56 0.40 0.62
Heartburn 0.49 0.74 0.42 0.73
Dyspepsia 0.53 0.67 0.58 0.46
GERDa 0.62 0.73 0.46 -
  1. aHeartburn and regurgitation subscales combined.
  2. Values are Pearson's correlation coefficients. Results in bold denote those within similar domains.