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Patient characteristics and baseline Barrett’s oesophagus
| Number of patients | 123 |
| Median age (years) | 67 (IQR 62–75) |
| Male | 102 (83%) |
| Female | 21 (17%) |
| Low grade dysplasia | 43 (35%) |
| High grade dysplasia | 62 (51%) |
| Intra-mucosal carcinoma | 18 (14%) |
| Mean BE circumferential (C) length cm | 5 (IQR 2–8) |
| Mean BE maximal (M) length cm | 8 (IQR 5–10) |
| Previous endoscopic resection | 54 (44%) |
