Table 1.

Characteristics of patients enrolled in this study.

	All Patients (n = 40)
Age (years ± SD)	74.2 ± 5.8
Sex [male, n (%)]	25 (62.5%)
Height (cm ± SD)	161.3 ± 9.3
Body weight (kg ± SD)	59.3 ± 10.6
H. pylori infection, negative/current/eradicated [n/n/n]	3/0/37
Smoking, never/current/past [n/n/n]	26/1/13
Alcohol [n (%)]	26 (65.0%)
Diseases
Peptic ulcer [n (%)]	2 (5.0%)
Gastric cancer [n (%)]	2 (5.0%)
Drugs
PPI [n (%)]	11 (27.5%)
Antiplatelet drugs [n (%)]	12 (30.0%)
Anticoagulants [n (%)]	4 (10.0%)
Bisphosphonates	2 (5.0%)
Abdominal symptoms
F-scale questionnaire
Acid-related symptom score	2.3 ± 3.0
Dysmotility-related symptom score	2.0 ± 2.1
F-scale total score	4.3 ± 4.8
IZUMO-scale questionnaire
Reflux	3.3 ± 4.6
Pain	1.1 ± 1.7
Fullness	0.7 ± 1.1
IZUMO scale total score	4.1 ± 4.7

Abbreviations: H. pylori: Helicobacter pylori, SD: standard deviation, PPI: proton-pump inhibitor.