Table 1

Perinatal and sociodemographic data in extremely low birthweight (ELBW) and normal birthweight (NBW) children

ELBW (n=88) NBW (n=60)
Perinatal
 Antenatal steroids26 (29.5%)0 (0%)
 Maternal pre-eclampsia15 (17.0%)2 (3.3%)
 Outborn17 (19.3%)0 (0%)
 Gestational age (completed weeks)27.1 (2.4)39.9 (1.1)
 Birthweight (g)873 (84)3501 (546)
 Small for gestational age13 (14.8%)0 (0%)
 Caesarean section23 (26.1%)7 (11.7%)
 Male39 (44.3%)33 (55.0%)
 Multiple birth7 (8.0%)0 (0%)
 Respiratory support76 (86.4%)0 (0%)
 Days IPPV (median, IQR)1-150 11 (2.25–29)0 (0–0)
 Days oxygen therapy (median, IQR)46.5 (11–69)0 (0–0)
Sociodemographic1-151
 Years of maternal schooling (median, IQR)10 (9–12)10 (8–12)
 Social class—Daniel scale10 (median, IQR)4.5 (2.5–5.9)4.8 (3.6–5.7)
  • Values are number (%), mean (SD), or median (IQR) as indicated.

  • 1-150 In those who required respiratory support.

  • 1-151 In those assessed at 14 years.

  • IPPV, intermittent positive pressure ventilation; IQR, interquartile range.