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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: J Child Psychol Psychiatry. 2014 Jan 20;55(7):828–838. doi: 10.1111/jcpp.12200

Table 3.

Neonatal Cerebral White Matter Abnormalities and Risk of Persistent Attention/Hyperactivity Problems among Very Preterm Born Children

Neonatal Cerebral White Matter Abnormality Attention/Hyperactivity Problem, Age 4 to 9 Years, %
p
None/Transient (N=85) Persistent (N=13)
White matter abnormality
None 21.2 15.4
Mild 62.4 53.8
Moderate–severe 16.5 30.8 .34
White matter signal abnormality
 Normal 45.9 30.8
 Focal (≤2 regions) 40.0 46.2
 Extensive (≥2 regions) 14.1 23.1 .30
Periventricular white matter volume loss
 Normal 52.9 38.5
 Mild–moderate 41.2 46.2
 Diffuse 5.9 15.4 .24
Cystic abnormality
 Normal 86.2 84.6
 Focal (single, <2mm) 9.4 7.7
 Extensive (multiple, ≥2mm) 2.4 7.7 .50
Ventricular dilatation
 Normal 38.8 30.8
 Mild–moderate 45.9 53.8
 Marked 15.3 15.4 .83
Thinning of the corpus callosum
 Normal 27.1 15.4
 Focal 58.8 76.9
 Global 14.1 7.7 .81

Note. Reported associations persisted after adjustment for postmenstrual age at MRI, sex, and family socioeconomic status.