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Table 2 Patients background factors in the 2 groups

From: Clinical characteristics of elderly patients with proton pump inhibitor-refractory non-erosive reflux disease from the G-PRIDE study who responded to rikkunshito

  RKT group PL group Pvalue
Mean age, years (range) 72.1 (65–85) 73.4 (65–83) 0.225a
Gender, n, (M/F) 17/35 8/35 0.370b
BMI (mean ± SD) 23.0 ± 3.6 22.9 ± 3.0 0.940a
Current alcohol use, n (%) 7 (13.5) 3 (7.0) 0.517b
Current smoking, n (%) 6 (11.5) 1 (2.3) 0.024b
Helicobacter pylori infection, n (%) 13 (43.3) 5 (16.7) 0.115b
Gastric mucosal atrophy, n (%) 37 (71.2) 27 (64.3) 0.096b
Redness of gastric mucosa, n (%) 10 (19.2) 3 (7.1) 0.167b
Impaired GEFV (grade III, IV), n (%) 16 (30.8) 9 (20.9) 0.427b
Esophageal hiatal hernia (grade B and A), n (%) 23 (48.6) 17 (39.7) 0.413b
Concomitant systemic diseases, n (%), (with) 34 (65.4) 26 (61.9) 0.785b
Total FSSG score (mean ± SD) 16.0 ± 7.0 15.1 ± 6.4 0.457c
Overall GSRS score (mean ± SD) 2.5 ± 0.9 2.3 ± 0.8 0.652c
  1. BMI, body mass index; GEFV, gastroesophageal flap valve; FSSG, Frequency Scale for the Symptoms of GERD; GSRS, Gastrointestinal Symptom Rating Scale.
  2. a, t-test; b, Fisher’s exact test; c, Wilcoxon’s signed rank test.