Risk factors before pregnancy Maternal factors Delayed
onset of menstruation, irregular menstruation or long
intermenstrual intervals are associated with an increased
risk of cerebral palsy. An unusually short
or long interval between pregnancies has also been
described as an antecedent of cerebral palsy . Two studies have found that
low social class is associated with cerebral palsy in
children with normal birth weight .
Parity of three or more was a factor in a study of preterm
infants. Several researchers have reported
a relationship between cerebral palsy and previous foetal
deaths .