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Table 3 Risks and risk differences for epilepsy hospitalization according to 5-minute Apgar score and other characteristics.

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

Characteristic

Risk per 100 persons (no. of cases)

Risk difference, cases per100 (95% CI)

 

Overall

Apgar score <7

Apgar score ≥ 7, reference

 

Entire cohort

0.8 (815)

3.3 (27)

0.8 (788)

2.5 (1.3 to 3.8)

Birth weight

   ≤2500 g

1.7 (70)

3.2 (5)

1.6 (65)

1.6 (-1.2 to 4.5)

   2501–3000 g

1.0 (133)

5.5 (6)

0.9 (127)

4.5 (0.1 to 8.9)

   3001–3500 g

0.8 (275)

3.7 (7)

0.8 (268)

2.9 (0.2 to 5.6)

   3501–4000 g

0.7 (228)

1.4 (3)

0.7 (225)

0.8 (-0.9 to 2.4)

   ≥4001 g

0.7 (106)

3.8 (4)

0.7 (102)

3.2 (-0.6 to 6.9)

Gestational age

   <28 weeks

1.6 (1)

0 (0)

1.9 (1)

-1.9 (-5.5 to 1.8)

   28–36 weeks

1.4 (55)

2.9 (4)

1.3 (51)

1.6 (-1.3 to 4.4)

   37–42 weeks

0.7 (684)

2.5 (14)

0.7 (670)

1.7 (0.4 to 3.0)

   >42 weeks

0.9 (20)

19.3 (4)

0.7 (16)

18.6 (-0.3 to 37.6)

Mode of delivery

   Spontaneous

0.7 (621)

3.0 (13)

0.7 (608)

2.2 (0.6 to 3.9)

   Assisted

0.9 (68)

4.4 (6)

0.8 (62)

3.6 (0.1 to 7.1)

   Caesarean

1.1 (125)

2.9 (7)

1.1 (118)

1.9 (-0.3 to 4.0)

Birth presentation

   Cephalic

0.7 (662)

3.0 (16)

0.7 (646)

2.3 (0.8 to 3.8)

   All other

1.1 (129)

3.7 (9)

1.1 (120)

2.6 (0.2 to 5.0)

Birth defects

   Absent

0.7 (639)

2.8 (20)

0.7 (619)

2.2 (0.9 to 3.4)

   Present

2.3 (176)

6.5 (7)

2.2 (169)

4.2 (-0.6 to 9.0)

Mother's age at delivery

   ≤20 years

1.1 (72)

3.4 (2)

1.1 (70)

2.3 (-2.4 to 7.1)

   21–30 years

0.8 (572)

3.1 (17)

0.8 (555)

2.3 (0.9 to 3.8)

   ≥31 years

0.7 (171)

3.9 (8)

0.7 (163)

3.2 (0.5 to 5.9)

Mother smoked in pregnancy*

   No

0.6 (141)

2.4 (6)

0.6 (135)

1.8 (-0.1 to 3.7)

   Yes

1.0 (99)

6.3 (6)

0.9 (93)

5.3 (0.3 to 10.4)

Parental epilepsy hospitalization#

   No

0.8 (122)

5.9 (7)

0.8 (115)

5.1 (0.7 to 9.4)

   Yes

1.9 (3)

37.4 (1)

1.3 (2)

36.1 (-37.1 to 109.4)

  1. * Births after 1990, N = 62,799. # Births after 1994, N = 38,771.