Risk factors for intellectual disability in children with spastic cerebral palsy

Area of Science:

• Neurology
• Developmental Pediatrics
• Public Health

Background:

• Cerebral palsy (CP) is a non-progressive disorder affecting posture and movement due to prenatal or perinatal brain lesions.
• Children with CP have an elevated risk of co-occurring disabilities, notably intellectual disability.
• Previous research indicates that the risk of intellectual disability in CP is influenced by motor impairment type and perinatal factors like gestational age.

Purpose of the Study:

• To investigate the risk patterns of intellectual disability in children diagnosed with spastic cerebral palsy.
• To analyze how CP subtype and gestational age impact the likelihood of intellectual disability.

Main Methods:

• A cross-sectional, population-based study utilizing data from the Northern Ireland Cerebral Palsy Register.
• Analysis included 1452 individuals born between 1981 and 2008 with congenital bilateral or unilateral spastic CP.
• Severe intellectual disability (IQ <50) was the primary outcome, with data on CP subtype, sex, gestational age, birth weight, and functional level considered.

Main Results:

• Severe intellectual disability was significantly more common in children with bilateral spastic CP (BSCP) compared to unilateral spastic CP.
• Relative to very preterm infants with BSCP, the risk of intellectual disability increased for moderately preterm (OR=3.97) and at-term (OR=2.51) children with BSCP.
• Children with BSCP born at term demonstrated the highest risk for intellectual disability.

Conclusions:

• Children with bilateral spastic CP face an increased risk of intellectual disability, particularly those born at term.
• These findings emphasize the critical need for early and targeted screening for intellectual disability in children with BSCP, especially those born at term.
• Understanding these risk patterns can inform clinical practice and support strategies for children with cerebral palsy.