Table 1.
Details of the findings
| Scale | Time | Country | Number of items | Recall period | Patients studies | Translated version | Fill in time | Outcome measurement |
|---|---|---|---|---|---|---|---|---|
| GSRS | 1988–2008 | Sweden | 15 | 1 week or 4 weeks | 204–853 | English, Dutch, German, Hungarian, Italian, Polish, Spanish, Navajo | Undefined | Likert-4 |
| GDSS | 1996 | United Kingdom | 8 | 24 weeks | 230 | English, Spanish | 4 min | Undefined |
| CDQ | 1996 | United Kingdom | 15 | 2 weeks | 287 | English | Undefined | Undefined |
| LDQ | 1998 | United Kingdom | 9 | 24 weeks | 215 | English, Chinese, Italian, Farsi | 5 min | Likert-5 |
| DHSI | 1998–2001 | United States | 34 | 4 weeks | 690–692 | English, Malay, Norwegian, French, Dutch, Italian, German, Spanish | Undefined | Undefined |
| NDI | 1999 | Australia | Quality of life component: 25 Symptom checklist: 15 | 2 weeks | 113 | English, French, Dutch, Italian, German, Spanish, Chinese, Arabic | Undefined | Likert-5 |
| DSSI | 2000 | United States | 20 | 2 weeks | 72 | English | Undefined | Likert-5 |
| SODA | 2001 | United States | 17 | 1 week | 98 | English, Spanish | Undefined | Rasch model |
| SLDQ | 2002 | Spain | 38 | Undefined | 63 | Spanish | Undefined | Likert-6 |
| HKDI | 2002 | Hong Kong, China | 12 | Undefined | 130 | Chinese | Undefined | Likert-5 |
| PADYQ | 2004 | Brazil | 11 | 4 weeks | 62 | English, Brazilian Portuguese | Undefined | Undefined |
| PAGI-SYM | 2004 | Germany | 20 | 2 weeks | 767–1577 | English, French, German, Italian, Polish, Dutch, Spanish | Undefined | Likert-6 |
| Severity Index of Bologna | 2004 | Italy | 8 | Undefined | 148 | Italian | Undefined | Likert-5 |
| GIS | 2005 | Australia | 10 | Undefined | 151 | English | 2–3 min | Likert-5 |
| GOS | 2006 | Canada | 10 | 2 days or 4 weeks | 1633 | English | Undefined | Likert-7 |
| SF-LDQ | 2007 | United Kingdom | 5 | 8 weeks | 592 | English, Indonesian, Urdu | Undefined | Likert-5 |
| GISSI | 2015 | United States | 39 | 2 weeks or 30 days | 934 | English | Undefined | Likert-5 |
| LPDS | 2014–2016 | Belgium | 8 | 1 day | 91–229 | English, Dutch, French | Undefined | smiley faces |
| FDSD | 2018–2022 | United States | 8 | 1 day | 102–512 | English | 1 min 30 s | NRS |
| SAGIS | 2017 | Australia | 22 | 1 week | 1120 | English | Undefined | Likert-5 |
| ESM-PROM | 2019–2021 | Netherlands | 33 | Real Time | 35–45 | English, Dutch | 3-5 min | NRS |
| FGI-Checklist | 2020 | Hong Kong, China | 20 | 1 week | 641 | English, Chinese | Undefined | Likert-4 |
| a Scale for PDS | 2021 | China | Undefined | 1 day | ≥ 100 | Chinese | Undefined | smiley faces + VAS |
| SEQ-DYSPEPSIA | 2022 | Korea | 11 | 2 weeks | 193 | English, Korean | Undefined | Likert-5 + cartoon-style images |
GSRS Gastrointestinal Symptom Rating Scale, GDSS Glasgow Dyspepsia Severity Index, CDQ The Clinical Dyspepsia Questionnaire, LDQ Leeds Dyspepsia Questionnaire, DHSI Digestive Health Status Instrument, NDI Nepean Dyspepsia Index, DSSI Dyspepsia Symptom Severity Index, SODA Severity of Dyspepsia Assessment, SLDQ Spanish Language Dyspepsia Questionnaire, HKDI Hong Kong Dyspepsia Index, PADYQ Porto Alegre Dyspeptic Symptoms Questionnaire, PAGI-SYM Patient Assessment of Upper Gastrointestinal Symptom Severity Index, GIS Gastrointestinal Symptom Score, GOS Global Overall Symptom Scale, SF-LDQ Short-form Leeds Dyspepsia Questionnaire, GISSI Gastrointestinal Symptom Severity Index, LPDS Leuven Postprandial Distress Scale, FDSD Functional Dyspepsia Symptom Diary, SAGIS Structured Assessment of Gastrointestinal Symptoms Scale, ESM-PROM Experience Sampling Method-Patient Reported Outcome Measure, a Scale for PDS a Scale for Post-prandial Distress Syndrome, SEQ-DYSPEPSIA Self-evaluation Questionnaire for Functional Dyspepsia