Febrile convulsions according to pre-eclampsia and gestational age at birth in Denmark 1980–94
| Gestational age at birth | Pre-eclampsia | Person-years at risk | No. of febrile convulsions | HR | 95% CI |
|---|---|---|---|---|---|
| *Including severe pre-eclampsia and eclampsia. | |||||
| 37–42 weeks | No | 148841 | 1179 | 1.00 | Reference |
| Mild | 44841 | 375 | 1.06 | (0.95 to 1.19) | |
| Severe* | 7502 | 63 | 1.07 | (0.83 to 1.36) | |
| 34–36 weeks | No | 5947 | 70 | 1.00 | Reference |
| Mild | 2804 | 34 | 1.03 | (0.68 to 1.55) | |
| Severe* | 3167 | 37 | 0.99 | (0.67 to 1.48) | |
| <34 weeks | No | 1763 | 22 | 1.00 | Reference |
| Mild | 690 | 11 | 1.27 | (0.62 to 2.62) | |
| Severe* | 2471 | 33 | 1.07 | (0.62 to 1.83) | |