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Table 1 Cohort characteristics

From: Calorie intake is associated with weight gain during transition phase of nutrition in female extremely low birth weight infants

Cohort characteristics (N = 95)Characteristics, mean ± SD or N (%)p value*
Male (N = 36)Female (N = 59)
Demographic characteristics
 Gestational age (weeks)26.4 ± 1.726.2 ± 1.70.52
 Race: African-Americans31 (86%)47 (80%)0.82
Anthropometric data
 Weight
  Birth weight (g)856 ± 110789 ± 1530.02
  Birthweight centile43 ± 2541 ± 210.65
  Mean weight centile before the transition phase21 ± 1325 ± 160.14
  Mean weight centile after the transition phase21 ± 1223 ± 140.44
  Mean weight centile change (before the transition phase-after transition phase)+ 0.19 ± 8.6− 2.2 ± 8.20.17
 Head circumference
  Birth HC centile24 ± 1.623 ± 1.60.26
  Mean HC centile before the transition phase16 ± 1921 ± 200.22
  Mean HC centile after the transition phase14 ± 1917 ± 150.57
  Mean HC centile change (before the transition phase-after transition phase)− 1.08 ± 13− 3 ± 140.51
 Comorbidities
  Chronic lung disease22 (61.1)32 (54.2)0.53
  Patent ductus arteriosus17 (47.2%)31 (52.5%)0.67
  Any intraventricular hemorrhage12 (33.3%)17 (29%)0.64
  Any retinopathy of prematurity11 (30.6%)27 (45.8%)0.19
  Culture positive infection4 (11.1%)13 (22.0%)0.27
  Postnatal steroid8 (22.2)15 (25.4)0.8
  1. *Chi-square test for a categorical variable and independent sample t test for continuous variables