Fig 1.
A flow chart showing patient recruitment and sample collection.
Table 1.
Comparison of the basic characteristics of patients with normal and abnormal oesophagogastroduodenoscopy findings.
Table 2.
The presence of blood in gastric juice is associated with abnormal oesophagogastroduodenoscopy.
Fig 2.
Presence of blood in gastric juice, stratified by oesophagogastroduodenoscopy diagnosis.