Table 1. Baseline characteristics of the subgroups classified according to the combination of Helicobacter pylori antibody and serum pepsinogen.
| Group | |||||
| A | B | C | D | ||
| Helicobacter pylori antibody status | Negative | Positive | Positive | Negative | |
| Pepsinogen status | Normal | Normal | Atrophic | Atrophic | Total |
| Subjects, n | 606 | 1126 | 635 | 79 | 2446 |
| Men, % | 34.7 | 46.6 | 40.6 | 29.1 | 41.5 |
| Age, years | 57.9 (11.9) | 56.4 (10.7) | 61.6 (11.2) | 62.1 (11.0) | 58.3 (11.4) |
| Pepsinogen I, ng/mL | 48.6 (38.1, 64.6) | 68.5 (52.5, 87.1) | 38.8 (24.9, 54.0) | 31.3 (14.1, 50.5) | 54.5 (38.5, 71.9) |
| Pepsinogen II, ng/mL | 6.9 (5.4, 9.9) | 16.6 (11.5, 25.8) | 18.4 (13.6, 23.4) | 17.2 (11.1, 20.9) | 14.8 (8.8, 22.2) |
| Pepsinogen I/II, ratio | 6.9 (5.6, 8.0) | 3.9 (3.2, 4.9) | 2.1 (1.6, 2.6) | 1.9 (1.5, 2.5) | 3.6 (2.5, 5.6) |
| Body mass index, kg/m2 | 23.0 (3.1) | 23.2 (3.1) | 22.6 (3.0) | 23.5 (3.4) | 23.0 (3.1) |
| Hemoglobin A1c, % | 5.9 (0.7) | 6.0 (0.9) | 5.9 (0.8) | 6.0 (0.9) | 6.0 (0.8) |
| Total cholesterol, mmol/L | 5.48 (1.11) | 5.34 (1.04) | 5.28 (1.11) | 5.30 (1.03) | 5.36 (1.08) |
| Smoking habits, % | 21.3 | 27.0 | 24.7 | 13.9 | 24.6 |
| Alcohol intake, % | 28.1 | 34.3 | 30.6 | 22.8 | 31.4 |
| History of peptic ulcer (%) | 9.4 | 19.7 | 13.9 | 7.6 | 15.3 |
| Family history of cancer, % | 8.3 | 10.1 | 8.0 | 10.1 | 9.1 |
| Total energy intake, KJ/day | 6981 (1610) | 7262 (1830) | 7142 (1699) | 6854 (1768) | 7149 (1747) |
| Total fat intake, g/day | 49.6 (11.0) | 48.4 (10.1) | 47.1 (10.7) | 48.2 (10.1) | 48.4 (10.5) |
| Salt intake, g/day | 13.1 (4.5) | 13.1 (4.6) | 13.2 (5.1) | 12.7 (4.7) | 13.1 (4.7) |
| Vitamin A intake, µg RE/day | 880.8 (332.3) | 856.9 (334.2) | 869.2 (343.3) | 915.9 (309.6) | 867.8 (335.3) |
| Vitamin B1 intake, mg/day | 0.83 (0.42) | 0.80 (0.40) | 0.80 (0.37) | 0.85 (0.42) | 0.81 (0.40) |
| Vitamin B2 intake, mg/day | 1.18 (0.31) | 1.16 (0.31) | 1.12 (0.32) | 1.17 (0.31) | 1.15 (0.31) |
| Vitamin C intake, mg/day | 78.2 (32.5) | 75.4 (33.3) | 78.2 (35.1) | 85.3 (30.0) | 77.1 (33.5) |
| Dietary fiber intake, g/day | 11.3 (3.7) | 10.7 (3.4) | 10.5 (3.3) | 11.5 (3.3) | 10.8 (3.4) |
Continuous variables are expressed as the mean (standard deviation) or median (interquartile range).
Groups A to D, see text for details.