Table 1.
Characteristics of the subgroups classified according to serum pepsinogen and Helicobacter pylori antibody status
| Group A | Group B | Group C | Group D | Total | |
| Pepsinogen status | Normal | Normal | Atrophic | Atrophic | |
| H pylori antibody status | − | + | + | − | |
| No of subjects | 3324 | 2134 | 1082 | 443 | 6983 |
| Male | 2260 | 1489 | 713 | 320 | 4782 |
| Female | 1064 | 645 | 369 | 123 | 2201 |
| Age (y) (mean (SD)) | 47.1 (8.1) | 49.2 (8.3) | 52.0 (8.5) | 53.3 (8.8) | 48.9 (8.5) |
| Pepsinogen I (mean (SD)) | 54.3 (23.9) | 73.7 (29.0) | 41.9 (17.3) | 35.7 (19.0) | 57.1 (27.4) |
| Pepsinogen II (mean (SD)) | 10.1 (7.3) | 20.6 (12.1) | 20.3 (6.8) | 17.9 (7.5) | 15.4 (10.3) |
| No of endoscopies* (mean (SD)) | 5.1 (2.0) | 5.1 (2.0) | 5.0 (1.9) | 5.0 (1.9) | 5.1 (2.0) |
| Duration of follow up (y) (mean (SD)) | 4.8 (1.6) | 4.7 (1.7) | 4.7 (1.7) | 4.5 (1.7) | 4.7 (1.7) |
*Number of endoscopic examinations.