Table 1

Seven point Likert scale based on the response to the question: “overall, how would you rate the severity of your central upper abdominal pain/discomfort? ”

0, No pain
1, Minimal pain/discomfort
2, Mild pain/discomfort
3, Moderate pain/discomfort
4, Moderately severe pain/discomfort
5, Severe pain/discomfort
6, Very severe pain/discomfort