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Table 1: 
Clinical characteristics of infants
CharacteristicsPreterm Cohort (n = 111)
Birth weight (g) (mean, SD)992 (224)
Gestational age at birth (weeks) (mean, SD)27.4 (1.8)
No. of males (%)59 (53.1)
No. of singletons (%)64 (57.7)
No. small for gestational age (%)*8 (7.2)
Gestational age at MRI (weeks) (mean, SD)40.2 (1.3)
No. of intraventricular hemorrhages (%)
    Grade I2 (1.8)
    Grade II7 (6.3)
    Grade III or IV6(5.4)
No. of cases of cystic periventricular leukomalacia (%)5 (4.5)
  • Note:—MRI indicates MR imaging.
  • * Birth weight ≤2 SDs for age and sex.