1994
DOI: 10.1016/s0025-6196(12)62245-9
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A New Questionnaire for Gastroesophageal Reflux Disease

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Cited by 397 publications
(332 citation statements)
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“…Internal consistency and test-retest reliability were acceptable (correlation coefficients >0.70). 38 An exception was the intra-class correlation coefficient in the HB group for the HB dimension (correlation coefficient = 0.66), which most probably reflects the small number of patients who had no change on esomeprazole treatment and were thus available to test stability over time (n = 14). We used known-groups validity to compare patient-reported symptom severity (RDQ) with physician-rated symptom severity.…”
Section: Discussionmentioning
confidence: 98%
“…Internal consistency and test-retest reliability were acceptable (correlation coefficients >0.70). 38 An exception was the intra-class correlation coefficient in the HB group for the HB dimension (correlation coefficient = 0.66), which most probably reflects the small number of patients who had no change on esomeprazole treatment and were thus available to test stability over time (n = 14). We used known-groups validity to compare patient-reported symptom severity (RDQ) with physician-rated symptom severity.…”
Section: Discussionmentioning
confidence: 98%
“…The GERQ [13] is a self-administered validated instrument that identifies the onset of GERD symptoms and grades the frequency and severity of symptoms over a prior year. It was a long questionnaire containing 80 questions, making it inconvenient for use in clinical trials.…”
Section: Discussionmentioning
confidence: 99%
“…It was feasible to prevent the recall bias since McColl found that 1-mo was the maximum period over which patients could provide reliable data due to recall errors [14] . Four symptoms were included in the RDQ that may be somewhat different from the definition of the previous studies [10,[12][13] . It would be more accurate to include substernal chest pain and food regurgitation to make a diagnosis of GERD [9,15] .…”
Section: Discussionmentioning
confidence: 99%
“…However, several studies have demonstrated the validity and reliability of these questions in identifying cases of GERD. 1,2,11,[26][27][28] Symptoms assessed by questionnaire have correlated with objective complications of GERD, such as esophagitis and esophageal adenocarcinoma. 29,30 Furthermore, to improve our specificity for GERD we restricted our primary endpoint to women who reported at least weekly symptoms.…”
Section: Commentmentioning
confidence: 99%