Table 1
Data on 100 patients from the study of Small and colleagues.22 Those with abnormal acid exposure were classified as having reflux disease, regardless of their symptom pattern
| Normal acid exposure | |||
|---|---|---|---|
| Abnormal acid exposure: Reflux disease | Moderate or severe heartburn | Mild or no heartburn | |
| Number and mean oesophageal acid exposure values for patients with acid exposure within the normal range are given, according to reflux symptoms. | |||
| Percentage of 24 hours that pH <4 | 10.8 (1.5) | 1.4 (0.2) | 0.8 (0.2) |
| No of patients | 20 | 44 | 36 |
