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List of main clusters of web users that were identified (36,989 users).a
| Cluster name | Number of users, n (%) |
| Pains and vomiting, stress and abdominal pain | 8026 (21.70) |
| Gastro intestinal disorders associated with diet, digestive disorders, and stress | 1962 (5.30) |
| GERDb | 1117 (3.02) |
| Borborygmi and abdominal pain | 711 (1.92) |
| Crohn disease | 256 (0.69) |
aClusters were named according to the features that were expressed in users’ messages.
bGERD: gastroesophageal reflux disease.
