Table 4. Factors associated with primary Headaches.
| Variable | PR | CI 95% | p |
|---|---|---|---|
| History of Migraine | 2.9 | 2.1–3.9 | 0.03 |
| History of similar episodes |
2.7 | 2.3–3.3 | 0.02 |
| Fulfilling ICHD 3 B criteria | 18.7 | 7.1–30.3 | <0.001 |
CI: Confidence Interval
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