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Prevalence of Helicobacter pylori by age groups among patients during the two time periods (1999 and 2012)
| Age group (years) |
Prevalence (%) | |
| First time period (1999) |
Second time period (2012) |
|
| 0–10 | 0 | 0 |
| 11–20 | 30 (3.6) | 37 (6.4) |
| 21–30 | 134 (17.1) | 143 (25.8) |
| 31–40 | 232 (30) | 123 (22.4) |
| 41–50 | 198 (25.5) | 103 (18.3) |
| 51–60 | 106 (13.4) | 83 (14.6) |
| 61–70 | 71 (8.8) | 42 (7.5) |
| 71–80 | 14 (1.4) | 23 (3.9) |
| 81–90 | 0 | 7 (1.2) |
| >90 | 1 (0.1) | 0 |
| Total | 786 (100) | 575 (100) |
