Table 1

Comparison between infants examined and not examined at 2 years of corrected age

Examined at 2 yearsNot examined at 2 years
n=3321 (%)n=675 (%)p Value
Gestational age (weeks)
Birth weight (g)
 2000 and more25.728.4
Birth year
Cranial ultrasound/MRI abnormalities
 No cranial ultrasound, no MRI23.024.00.54
 No lesions at cranial ultrasound and/or MRI69.670.7
 Intraventricular haemorrhage (grade II)3.62.7
 Intraventricular haemorrhage (grades III and IV)0.50.3
 White matter damage3.12.2
 White matter damage and intraventricular haemorrhage0.20.1