Table 2 Basic demographical and clinical characteristics of participants
|  | Hong Kong sample (n = 250) | Hunan sample (n = 150) |
|---|---|---|
Age (years), mean (SD) | 51.4 (13.0) | 45.2 (13.7) |
Female, n (%) | 199 (79.6) | 101 (67.3) |
Body mass index (kg/m2), mean (SD) | 20.8 (7.7) | 22.1 (4.6) |
Duration of symptoms (years), mean (SD) | 3.6 (5.3) | 2.3 (3.4) |
Symptom subtype of functional dyspepsia | ||
 Postprandial distress syndrome only | 70 (28.0) | 28 (18.7) |
 Epigastric pain syndrome only | 18 (7.2) | 28 (18.7) |
 Overlapping between two subtypes | 162 (64.8) | 94 (62.6) |
Self-reported duration of symptoms, n (%) | ||
 ≥ 5 years | 57 (22.8) | 18 (12.0) |
 < 5 years | 193 (77.2) | 132 (88.0) |
PHQ9 total scorea | ||
 Mean (SD) | 7.0 (4.9) | 7.1 (6.4) |
 Depression (cut-off 10), n (%) | 67 (26.8) | 51 (34.0) |
GAD7 total scoreb | ||
 Mean (SD) | 5.8 (5.3) | 6.6 (5.7) |
 Anxiety (cut-off 10), n (%) | 47 (18.8) | 41 (27.3) |
NDI results, mean (SD) | ||
 Symptom severityc | 44.8 (27.7) | 53.6 (32.6) |
 Eating/drinkingd | 64.0 (23.2) | 68.9 (24.4) |
 Sleepd | 62.9 (29.6) | 67.8 (30.0) |
 Knowledge/controld | 70.2 (21.0) | 67.7 (24.7) |
 Interferenced | 69.3 (20.0) | 70.2 (21.7) |
 Total QoL scored | 66.6 (20.0) | 68.6 (21.6) |
With concomitant IBS diagnosise, n (%) | 45 (18.0) | 26 (17.3) |