Table 1.
Summary of content of GI symptom survey questionnaire
| Section | Content |
|---|---|
| 1. Demographics | Age, sex, education level, length of residence in UK, diet type, GI conditions, medication, smoking, alcohol |
| 2. GI symptoms | Experience of GI symptoms in past 4 weeks, bowel movements, most common and most concerning symptoms |
| 3. Impact of GI symptoms | Diet, lifestyle, body image, sleep, visceral sensitivity index |
| 4. Perceived causes of GI symptoms | Foods/drinks and avoidance |
| 5. Food choices and GI symptoms | Impact of perceived dietary causes of GI symptoms on food/drink choices |
| 6. Diet | Frequency of consumption of fruit, vegetables, wholegrains, beans and pulses, nuts and seeds |
| 7. Physical activity | IPAQ—International physical activity questionnairea |
| 8. Personality | TIPI – Ten item personality indexb, Obsessive beliefs and behavioursc |