Content of data and tissue sample collection
| Content | Details |
| Demographic information | Name, date of birth, gender, age, nationality, height, weight, level of education, and so on |
| Diagnostic information | Latest gastroscope reports, Hp test reports and pathological reports |
| TCM syndrome-related information | Features of presenting signs and symptoms collected by using TCM four diagnostic methods of looking, listening/smelling, asking and palpating TCM syndrome pattern differentiation scale scores Results of TCM syndrome identification |
| Disease history | Patient history and family history of CG, GC and Hp infection, and so on |
| Complications | Upper gastrointestinal haemorrhage, upper gastrointestinal ulcer, pyloric obstruction, anaemia, gastric carcinoma metastasis, and so on |
| Dietary intake and lifestyle | Dietary structure, working status, psychological status, history of smoking and alcohol intake, and so on |
| Medication | Current drug use on CG and GC treatment (current use of proton pump inhibitors, and so on, at the time of upper endoscopy), and non-steroidal anti-inflammatory drugs (NSAID) |
| Laboratory indices | Routine blood test, routine stool test, tumour markers, and so on |
| Tissue samples | Tissue samples of diseased gastric mucosa |
CG, chronic gastritis; GC, gastric carcinoma; Hp, Helicobacter pylori; TCM, traditional Chinese medicine.