Clinical history and prevalence of workers with antibodies to HEV, H pylori, and parietal cells
| Exposure to waste water | ||
|---|---|---|
| No | Yes | |
| Figures are number with positive response or antibodies/total number of exposed or non-exposed workers (%). | ||
| The percentages are crude percentages without any adjustment. | ||
| A total of 26, 29, 28, 29 determinations are missing for HEV IgG, H pylori IgG, H pylori IgA, and parietal cells, respectively, because of blood sampling refusals or technical reasons. | ||
| Clinical history | ||
| History of peptic ulcer | 15/429 (4) | 11/349 (3) |
| History of histologically verified gastritis | 12/429 (3) | 10/349 (3) |
| Positive antibodies | ||
| HEV IgG | 15/414 (4) | 10/338 (3) |
| H pylori IgG | 205/413 (50) | 113/336 (34) |
| H pylori IgA | 87/413 (21) | 76/337 (23) |
| Parietal cells | 102/412 (25) | 92/337 (27) |