Table 3.
Helicobacter pylori seropositivity according to habitation type and life period
| Group | Preschool | School‐age | After high school | N | % |
|---|---|---|---|---|---|
| 1a | City | City | City | 1381/2946 | 46.6 |
| 2a | Noncity | City | City | 283/485 | 58.4 |
| 3a | Noncity | Noncity | City | 428/752 | 56.9 |
| 4a | Noncity | Noncity | Noncity | 290/462 | 62.8 |
| 5 | City | City | Noncity | 16/30 | 53.3 |
| 6 | City | Noncity | City | 5/16 | 31.3 |
| 7 | Noncity | City | Noncity | 4/6 | 66.7 |
| 8 | City | Noncity | Noncity | 3/5 | 60.0 |
a
We compared groups 1‐4 by considering the relatively large participant number. A P value less than .008 was considered significant due to multiple comparisons.
Group 1 vs 2, P < .001; group 1 vs 3, P < .001; group 1 vs 4, P < .001; group 2 vs 3, P = .618; group 2 vs 4, P = .164; group 3 vs 4, P = .044.