Risk of induced abortion per number of AEDs
| AEDs (n) | n | Events | % | Crude OR | Adjusted OR* |
| 0 | 128 294 | 17 423 | 13.6 | 1 | 1 |
| 1 | 479 | 110 | 23.0 | 1.90 (CI 1.53 to 2.34) | 1.55 (CI 1.24 to 1.93) |
| >1 | 62 | 18 | 29.0 | 2.60 (CI 1.50 to 4.50) | 2.08 (CI 1.19 to 3.64) |
*Adjusted for maternal age, drugs belonging to X and D Food and Drug Administration pregnancy categories, antipsychotics, lithium and antidepressants.
AEDs, antiepileptic drugs.