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Table 1:

Prevalence of infants with each item in cerebral WM score (VPT infants/term infants)

VariablesWM Score
Score 0Score 1Score 2Score 3Score 4
Cerebral WM
    Cystic lesionsNone (90/22)Focal unilateral (3/0)Focal bilateral (1/0)Extensive unilateral (2/0)Extensive bilateral (1/0)
    Focal signal abnormalityNone (77/20)Focal punctate (13/2)Extensive punctate (5/0)Linear (2/0)
    Myelination delayPLIC & corona radiata (65/22)Only PLIC (26/0)Minimal—no PLIC (6/0)
    Thinning of the corpus callosumNone (40/18)Partial (genu/body < 1.3 mm or splenium < 2.0 mm) (53/4)Global (genu/body < 1.3 mm and splenium < 2.0 mm) (4/0)
    Dilated lateral ventriclesBoth sides VD < 7.5 mm (26/17)One side 7.5 mm ≤ VD < 10 mm (19/4)Both sides 7.5 mm ≤ VD < 10 mm or one side VD ≥ 10 mm (42/1)Both sides VD ≥ 10 mm (10/0)
    Volume reductioncBPW ≥77 mm (21/19)77 mm > cBPW ≥72 mm (30/2)72 mm > cBPW ≥67 mm (40/1)67 mm > cBPW (6/0)
  • Note:—cBPW indicates corrected biparietal width; PLIC, posterior limb of internal capsule; VD, ventricular diameter.