Table 1: Number of children that present specific risk factors.

FactorNumber of children

Prenatal risk factors
 Abortion threat1
 Oligohydramnios1
 Vesicoureteral infections1
 Aged mother1
 Tobacco use2
 Addiction to solvents1
Perinatal risk factors
 Prematurity7
 Severe asphyxia (3 with cardio  respiratory arrest)6
 Underweight4
 Neonatal sepsis (1 with septic shock)4
 Neonatal seizures4
 Hyperbilirubinemia multifactorial4
 Respiratory distress4
 Acute fetal distress2
 Meconium aspiration2
 Congenital malformations2
 Anemia2
 Dystocic delivery1
 Placental abruption1