Table 2.
Comparison of residents symptoms, diagnosis and histological changes in local citizens and expatriates
| Local resident | Expatriates | P value | |
|---|---|---|---|
| Symptoms | |||
| Abdominal pain | |||
| Positive | 183 (88) | 72 (71) | <0·001 |
| Negative | 24 (12) | 30 (29) | |
| Nausea | |||
| Positive | 4 (2) | 0 (0) | 0·306 |
| Negative | 203 (98) | 102 (100) | |
| Haematemesis | |||
| Positive | 13 (6) | 2 (2) | 0·157 |
| Negative | 194 (94) | 100 (98) | |
| Melaena | |||
| Positive | 4 (2) | 6 (6) | 0·087 |
| Negative | 203 (98) | 96 (94) | |
| Weight loss | |||
| Positive | 3 (2) | 22 (22) | <0·001 |
| Negative | 204 (98) | 80 (78) | |
| Diagnosis | |||
| Non-ulcer dyspepsia (gastric erythema) | 143 (69) | 42 (41) | <0·001 |
| Gastric ulcer | 23 (11) | 20 (20) | 0·042 |
| Duodenal ulcer | 17 (8) | 10 (10) | 0·641 |
| Gastric carcinoma | 24 (12) | 30 (29) | <0·001 |
| Histology | |||
| Grade of gastritis | |||
| Chronic active gastritis | 151 (73) | 89 (87) | 0·005 |
| Chronic inflammation | 56 (27) | 13 (13) | |
| Lymphoid aggregates | |||
| Positive | 20 (10) | 50 (49) | <0·001 |
| Negative | 187 (90) | 52 (51) | |
| Intestinal metaplasia | |||
| Positive | 32 (15) | 6 (6) | 0·016 |
| Negative | 175 (85) | 96 (94) | |
| Severity of inflammation | |||
| Mild | 160 (77) | 43 (42) | <0·001 |
| Moderate | 47 (23) | 59 (58) | |
| hopQ type 1 | |||
| Positive | 98 (47) | 88 (86) | <0·001 |
| Negative | 109 (53) | 14 (14) | |
| hopQ type 2 | |||
| Positive | 176 (85) | 60 (59) | <0·001 |
| Negative | 31 (15) | 42 (41) | |
Values given are n (%).