Table 3.
Differences between sex-stratified subgroups.
| HP (+) | HP (−) | Headache (+) | Headache (−) | |
|---|---|---|---|---|
| Sex | ||||
| male | 145 | 402 | 22 | 525 |
| female | 397 | 813 | 108 | 1102 |
| p = 0.0002 chi-squared | ||||
HP—Helicobacter pylori.
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