Table 3.
Characteristics of populations sampled among included validation studies.
| Instrument | Sample | Disease characteristics | Source of participants | Location | Response rate | ||||
| N |
Average age (SD, range) |
Gender % female |
Disease(s) | Average disease duration | Disease severity | ||||
| Traditional Chinese Medicine Functional Gastrointestinal Disorders Scale31 | 300 (Healthy: 100 Patients: 200) |
15–25 (31.9%) 26–45 (46.6%) 46–60 (13.8%) ≥60 (7.7%) |
47% | 50% FD 50% IBS |
Not mentioned | Not mentioned | Hospital & Specialist outpatient clinic | Guangzhou, Shenzhen, and Maoming, China | 99.3% |
| Traditional Chinese Medicine Syndrome Differentiation Instrument for Functional Gastrointestinal Disorders32 | 500 (Healthy subjects & patients) |
15–25 (23.6%) 26–35 (36%) 36–45 (27%) 46–55 (8.4%) 56–70 (5%) |
49.5% | FGIDs | Not mentioned | Not mentioned | Specialist outpatient clinic | Guangzhou, China | 72.4% |
| Traditional Chinese Medicine Syndrome Differentiation Instrument for Functional Gastrointestinal Disorders (Amended)35 | 270 | 50.6 (12.8, 18–80) |
78.6% | FD | Not mentioned | Not mentioned | Specialist outpatient clinic | Hong Kong | 83.7% |
| Traditional Chinese Medicine Functional Dyspepsia Scale33 | 91 | 40.3 (11.95) |
46.1% | FD | Not mentioned | Not mentioned | Specialist outpatient clinic | Guangzhou and Shanghai, China | Not mentioned |
| Stomach Qi Deficiency Pattern Assessment Scale34 |
60 (Healthy: 30 SQD: 30) |
Healthy: 37.5 (11.1, 19–74) SQD: 40.47 (10.3, 19–74) |
Healthy 63% SQD: 40% |
Dyspepsia | Not mentioned | Not mentioned | Hospital | Seoul, South Korea | Not mentioned |
FD: Functional dyspepsia; IBS: Irritable bowel syndrome; FGIDs: Functional gastrointestinal diseases; SQD: Stomach qi deficiency