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Table 2 Inclusion and exclusion criteria of DIAMOND

From: Pragmatic trials in primary care. Methodological challenges and solutions demonstrated by the DIAMOND-study

1. Patients are included when they visit their GP for complaints of which the GP thinks that they originate from the upper GI tract and for which acid-suppressive medication can be effective.

2. Patients are included when they are 18 years or older.

3. Patients are excluded when they have used prescribed acid-suppressive medication in the last 3 months before inclusion.

4. Patients are excluded when they have had a gastroscopy in the year prior to inclusion.

5. Patients are excluded when they have alarming symptoms.

6. Patients are excluded when there are contraindications for prescribing acid-suppressive medication, such as pregnancy, liver or kidney malfunction.

7. Patients are excluded when they are not able to fill out (Dutch) questionnaires, for example because of language problems.