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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.