Table 1.
Baseline characteristics of screening participants and the endoscopic findings
| Baseline variables | 2004 | 2008 | 2012 | 2014 | 2016 | 2018 |
| No of participants | 4121 | 1338 | 2479 | 2539 | 2735 | 2907 |
| No of Helicobacter pylori infection (%) | 2598 (63.0) | 179 (13.4) | 705 (28.4) | 371 (14.6) | 281 (10.3) | 450 (15.5) |
| Mean age, year (SD) | 59.1 (13.6) | 52.8 (11.0) | 50.9 (12.7) | 51.9 (12.9) | 52.3 (13.2) | 52.7 (13.2) |
| Male sex, % | 48.7 | 49.7 | 48.3 | 48.7 | 49.4 | 49.2 |
| No of new participant (%) | 4121 (100) | 89 (6.7) | 945 (38.1) | 494 (19.5) | 402 (14.7) | 461 (15.9) |
| No of H. pylori infection in new participants (%) | 2598 (63.0) | 41 (46.1) | 474 (50.2) | 195 (39.5) | 146 (36.3) | 182 (39.5) |
| No of endoscopy | 1762 | 841 | 391 | 88 | 256 | 167 |
| Active peptic ulcer, % | 193 (11.0) | 30 (3.6) | 68 (17.3) | 14 (15.9) | 34 (7.5) | 5 (3.0) |
| Gastric cancer (%) | 9 (0.5) | 1 (0.1) | 3 (0.8) | 2 (2.3) | 2 (0.8) | 2 (1.2) |
| Reflux oesophagitis (%) | 241 (13.7) | 230 (27.3) | 97 (24.8) | 26 (29.5) | 61 (23.8) | 36 (21.6) |
| Barrett’s oesophagus (%) | 0 | 2 (0.2) | 3 (0.8) | 0 | 1 (0.4) | 1 (0.6) |
| Oesophageal cancer (%) | 0 | 0 | 0 | 1 (1.1) | 0 | 0 |