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Table 1 Birth characteristics and 5-minute Apgar score of 131,853 Danish newborns.

From: Apgar score and hospitalization for epilepsy in childhood: a registry-based cohort study

Characteristic N Five-minute Apgar score < 7
   Frequency Prevalence, %
Entire cohort 131,853 1,323 1.0
Birth weight
   ≤2500 g 5,633 334 5.9
   2501–3000 g 17,043 163 1.0
   3001–3500 g 44,381 289 0.6
   3501–4000 g 43,779 296 0.7
   ≥4001 g 20,860 165 0.8
   No record 157 76 48.4
Gestational age
   <28 weeks 179 55 30.7
   28–36 weeks 5,258 265 5.0
   37–42 weeks 116,527 847 0.7
   >42 weeks 3,866 45 1.2
   No record 6,023 111 1.8
Mode of delivery
   Spontaneous 106,449 708 0.7
   Assisted 10,007 213 2.1
   Caesarean 15,350 401 2.6
   No record 47 1 2.1
Birth presentation
   Cephalic 109,724 813 0.7
   All other 14,837 420 2.8
   No record 7,292 90 1.2
Any birth defect
   Absent 122,274 1,087 0.9
   Present 9,579 236 2.5
Mother's age at delivery
   ≤20 years 7,509 87 1.2
   21–30 years 89,986 879 1.0
   ≥31 years 34,358 357 1.0
Mother smoked in pregnancy*
   No 43,375 485 1.1
   Yes 17,804 191 1.1
   No record 1,620 45 2.8
Parental epilepsy hospitalization#
   No 38,332 356 0.9
   Yes 439 8 1.8
  1. *Births after 1990, N = 62,799. #Births after 1994, N = 38,771.