Table 5

Association between late preterm birth and the risk of seizure in children aged up to 3 years, born between 34 and 41 weeks of gestational age

34–41 weeks37–41 weeks (term)34–36 weeks (late preterm)Term versus late preterm
nNumber of seizuresIncidence of seizure, % (95% CI)nNumber of seizuresIncidence of seizure, % (95% CI)nNumber of seizuresIncidence of seizure, % (95% CI)P value
Male with birth weight ≥2500 g34 354436912.7 (12.4 to 13.1)33 411424312.7 (12.4 to 13.1)94312613.4 (11.3 to 15.7)0.552
Male with birth weight <2500 g264937814.3 (13.0 to 15.7)160422113.8 (12.2 to 15.6)104515715.0 (13.0 to 17.3)0.394
Female with birth weight ≥2500 g32 202364211.3 (11.0 to 11.7)31 667357811.3 (11.0 to 11.7)5356412.0 (9.5 to 15.0)0.63
Female with birth weight <2500 g348341411.9 (10.9 to 13.0)245429111.9 (10.6 to 13.2)102912312.0 (10.1 to 14.1)0.954
nNumber of febrile seizuresIncidence of febrile seizure, % (95% CI)nNumber of febrile seizuresIncidence of febrile seizure, % (95% CI)nNumber of febrile seizuresIncidence of febrile seizure, % (95% CI)P value
Male with birth weight ≥2500 g34 35433569.8 (9.5 to 10.1)33 41132529.7 (9.4 to 10.1)94310411.0 (9.2 to 13.2)0.182
Male with birth weight <2500 g264930111.4 (10.2 to 12.6)160417310.8 (9.4 to 12.4)104512812.3 (10.4 to 14.4)0.26
Female with birth weight ≥2500 g32 20226368.2 (7.9 to 8.5)31 66725918.2 (7.9 to 8.5)535458.4 (6.4 to 11.1)0.812
Female with birth weight <2500 g34833068.8 (7.9 to 9.8)24542118.6 (7.6 to 9.8)1029959.2 (7.6 to 11.2)0.555