Crude prevalence rates of gastrointestinal symptoms and symptom complexes by socioeconomic class. All values are percentages
| 1st quintile | 2nd quintile | 3rd quintile | 4th quintile | 5th quintile | |
| Oesophageal symptoms | 9.0 | 10.2 | 11.0 | 13.1 | 13.3 |
| Upper dysmotility symptoms | 12.3 | 15.5 | 14.0 | 16.4 | 17.0 |
| Diarrhoea symptoms | 8.9 | 9.8 | 9.8 | 11.3 | 10.3 |
| Constipation symptoms | 6.3 | 8.7 | 9.6 | 10.3 | 10.2 |
| Bowel symptoms | 15.2 | 18.0 | 18.9 | 21.2 | 20.5 |
| Abdominal pain | 9.2 | 10.8 | 9.8 | 11.9 | 11.6 |
| Early satiety | 3.0 | 3.9 | 3.9 | 4.6 | 5.4 |
| Postprandial fullness | 4.1 | 5.1 | 4.3 | 6.0 | 6.3 |
| Bloating | 9.7 | 11.5 | 11.0 | 12.6 | 11.5 |
| Heartburn | 8.2 | 9.5 | 10.6 | 12.2 | 12.4 |
| Nausea | 1.5 | 4.2 | 3.1 | 3.7 | 4.6 |
| Vomiting | 0.3 | 0.8 | 0.8 | 1.2 | 1.8 |
| Dysphagia | 1.3 | 1.7 | 1.2 | 2.5 | 2.1 |
| Diarrhoea/constipation | 8.3 | 10.6 | 9.9 | 11.9 | 11.3 |
| Anal blockage | 3.5 | 5.4 | 5.0 | 5.5 | 5.4 |
| >3 bowels each day | 4.9 | 4.9 | 5.4 | 6.1 | 5.5 |
| <3 bowels each week | 2.6 | 3.4 | 3.7 | 3.7 | 4.5 |
| Lumpy or hard stools | 3.0 | 5.8 | 6.1 | 6.4 | 5.6 |
| Watery stools | 5.1 | 5.4 | 5.3 | 6.2 | 5.7 |
| Urgency | 3.4 | 5.7 | 5.2 | 5.9 | 5.6 |
| Faecal incontinence | 0.5 | 0.4 | 0.9 | 1.0 | 1.3 |
5th quintile is the most disadvantaged socioeconomic class.
All symptoms counted if reported to occur often or very often.