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

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

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
GERD^a	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
GERD^a	0.62	0.73	0.46	-

^aHeartburn and regurgitation subscales combined.
Values are Pearson's correlation coefficients. Results in bold denote those within similar domains.

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