Table 1 Characteristics of women with singleton pregnancies by package of care

Age (years; mean, SD)

73,266

31.3 (5.6)

30.2 (5.6)

33.9 (3.8)

35.5 (3.8)^a

Age < 35 years (%)

50,925

69.5

77.1

55.7

39.7^a

Age 35–39 years (%)

18,369

25.1

19.1

38.4

46.7^a

Age ≥ 40 years (%)

3972

5.4

3.8

5.9

13.6^a

Elective CS (%)

10,257

14.0

11.1

14.1

29.4^a

Emergency CS (%)

10,280

14.0

14.2

14.1

13.3^b

Vaginal delivery (%)

52,708

72.0

74.7

71.8

57.3^a

Nulliparas (%)

29,376

40.1

40.7

41.5

35.9^a

Married/Civil Partnership (%)

47,083

64.3

55.9

86.5

92.1^a

Irish-born (%)

51,371

70.3

63.5

90.3

91.1^a

Infertility treatment (%)

2649

3.6

2.1

4.5

11.3^a

Planned pregnancy (%)

48,667

66.5

61.4

82.2

81.7^a

BMI (median, IQR)

72,718

24.5 (6.0)

24.7 (6.3)

24.4 (5.1)

23.8 (4.8)^a

Underweight (%)

1931

2.6

2.5

1.0

4.8^a

Normal weight (%)

37,833

51.6

50.0

54.5

58.3^a

Overweight (%)

21,198

28.9

29.1

31.3

26.2^a

Obesity (%)

12,304

16.8

18.5

13.2

10.7^a

Professional/managerial employment (%)

18,720

25.7

16.8

43.3

59.7^a

Unemployed (%)

5559

7.6

10.0

0.9

0.5^a

Current depression (%)

1192

1.6

2.0

0.7

0.5^a

Current anxiety (%)

2704

3.7

4.1

3.0

1.9^a

Anxiolytics/antidepressants (%)

1533

2.1

2.3

1.3

1.5^a

Smoked in pregnancy (%)

9209

12.6

16.0

3.2

1.3^a

Any alcohol use in pregnancy (%)

1114

1.5

1.5

2.1

1.3^c

Illicit drugs in pregnancy (%)

1158

1.6

2.0

0.5

0.1^a