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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.
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