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Table 2 Characteristics of study population by SES and selected maternal and newborn characteristics

From: ‘The influence of gestational age and socioeconomic status on neonatal outcomes in late preterm and early term gestation: a population based study’

SES group

Lowest

Middle

Highest

n

8203

8854

8255

Maternal characteristics

maternal age group, years

<19

10.3

3.3

1.7

>34

8.1

12.9

17.5

primiparous, %

33.3

40.2

40.6

CS, %

17.5

21.9

23.0

maternal diabetes, %

7.2

4.2

3.0

induced delivery, %

25.5

27.9

26.9

multiple gestation, %

1.7

2.0

2.8

rural, %

45.8

44.5

42.3

breastfed, %

69.1

84.8

90.6

rural, %

45.8

44.5

42.3

male, %

51.3

51.4

51.0

mean BW, grams (SD)

3482 (554)

3505 (534)

3492 (526)

BW range, grams

1216– 6208

1172– 6457

1331– 5746

Large for GA, %

16.0

15.0

13.8

Small for GA, %

8.0

7.4

7.0

resuscitation at birth, %

8.0

7.6

7.0

median LOS, days (range)

2 (1–103)

2 (1–168)

2 (1–51)

premature, %

7.1

5.4

5.7

major congenital anomaly, %

2.8

2.6

2.1

  1. BW = birthweight, CS = caesarean section, SES = socioeconomic status.