Table 1 Basic characteristics of the study participants
Common risk factors | Metaplasia | Atrophy | Dysplasia | Abnormal gastric biopsy | No pathological finding | Total |
|---|---|---|---|---|---|---|
Age (years) | ||||||
  ≤ = 40 | 5 (2.3) | 2 (1.0) | 2 (1.0) | 59 (27.4) | 147 (68.3) | 215 |
 41–50 | 19 (15.3) | 13 (10.5) | 16 (12.9) | 16 (12.9) | 60 (48.4) | 124 |
 51–60 | 24 (19.5) | 22 (17.9) | 9 (7.3) | 16 (13.0) | 52 (42.3) | 123 |
  ≥ = 61 | 41 (33.3) | 37 (30.1) | 19 (15.4) | 12 (9.7) | 14 (11.4) | 123 |
Sex | ||||||
 Female | 52 (13.1) | 41 (10.3) | 32 (8.1) | 78 (19.6) | 194 (48.9) | 397 |
 Male | 37 (19.7) | 33 (17.5) | 14 (7.4) | 25 (13.3) | 79 (42.0) | 188 |
H. pylori infection | 83 (17.7) | 68 (14.5) | 42 (8.9) | 52 (11.1) | 224 (47.8) | 469 |
Smoking | 20 (17.8) | 17 (15.2) | 9 (8.0) | 16 (14.3) | 50 (44.6) | 112 |
NSAID use | 13 (7.5) | 11 (6.3) | 6 (3.5) | 27 (15.6) | 116 (67.0) | 173 |
Aspirin | 8 (9.1) | 13 (14.8) | 6 (6.8) | 15 (17.0) | 46 (52.3) | 88 |
Addiction (opium and/or methamphetamine) | 35 (24.0) | 30 (20.5) | 17 (11.6) | 19 (13.0) | 45 (30.8) | 146 |
Alcohol consumption | 6 (12.0) | 6 (12.0) | 3 (6.0) | 8 (16.0) | 27 (54.0) | 50 |