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| Headaches nonspecific | Fisher exact test, p value | OR | 95% CI | |
|---|---|---|---|---|
| anti-β2GPI IgM (+) n = 9 | 4 (44.4%) | < 0.05 | 5.60 | 1.17–26.88 |
| anti-β2GPI IgM (-) n = 48 | 6 (12.5%) |
anti-β2GPI—anti-β2-glycoprotein-I; IgM—immunoglobulin M; OR—odds ratio; CI—confidence interval
