Relapses of multiple sclerosis during pregnancy among 29 Lebanese women
| Period | Number of women* | Number of relapses | Rate of relapse/woman/year† | p Value‡ |
|---|---|---|---|---|
| Year before pregnancy | 29 | 5 | 0.17 (0.03 to 0.32) | – |
| Pregnancy | ||||
| First trimester | 29 | 0 | 0 | 0.02 |
| Second trimester | 29 | 0 | 0 | 0.02 |
| Third trimester | 29 | 0 | 0 | 0.02 |
| Postpartum | ||||
| First year | 29 | 0 | 0 | 0.02 |
| Second year | 29 | 6 | 0.21 (−0.12 to 0.04) | 0.32 |
| Third year | 29 | 5 | 0.17 (0.03 to 0.32) | – |
| Fourth year | 29 | 5 | 0.17 (0.03 to 0.32) | – |
*All women stopped interferon β 1-a treatment 3 months before conception.
†Values are means (95% CI).
‡p Values are for the comparison with the relapse rate during the year before pregnancy.