Figure 2

Symptoms during follow-up in non-PPI users. (White rectangle) GerdQ score < 8, i.e. no GERD according to GerdQ, or symptom improvement**. (Black rectangle) GerdQ score ≥ 8; i.e. presence of GERD symptoms or stable symptoms. (Grey rectangle) GerdQ score ≥ 8, if previous score < 8; i.e. relapse of symptoms. *P < 0.05. **See method section for definitions.