Enhancing diagnostic accuracy: potential role for treatment trials
| Predictive validity | p Value |
|---|---|
| *Response to over the counter antisecretory therapy. | |
| RDQ, Reflux Disease Questionnaire. | |
| Positive OTC response* | 0.0076 |
| RDQ heartburn scale | 0.01 |
| RDQ regurgitation scale | 0.01 |