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Life expectancy in children with cerebral palsy
J L Hutton1, T Cooke, P O Pharoah
1Department of Statistics, University of Liverpool.
Insights
Life expectancy for children with cerebral palsy is higher than previously thought, especially for those with fewer functional disabilities. This finding impacts future planning for essential social, educational, and health services.
Area of Science:
- Medical research
- Pediatric neurology
- Public health
Background:
- Cerebral palsy (CP) is a group of disorders affecting movement and posture, with varying degrees of functional impairment.
- Previous estimates of life expectancy for children with CP have varied, necessitating updated data.
Purpose of the Study:
- To determine the life expectancy of children diagnosed with cerebral palsy.
- To analyze factors influencing survival rates in this population.
Main Methods:
- A cohort analysis was conducted on children with idiopathic cerebral palsy born between 1966 and 1984 in the Mersey region.
- Data were compiled from multiple sources, with subject status tracked via the NHS central register.
- Survival was analyzed based on functional abilities (ambulation, manual dexterity, mental ability), sex, birth weight, and gestational age.
Main Results:
- The 20-year survival rate for the entire cohort was 89.3% for females and 86.9% for males.
- Children with no severe functional disabilities had a 99% 20-year survival rate, compared to 50% for those with severe disabilities in all functional areas.
- While birth weight and gestational age showed some predictive value, functional disability was a more significant factor in survival.
Conclusions:
- Life expectancy for children with cerebral palsy in this cohort exceeds some prior estimations.
- These findings have significant implications for the provision and planning of social, educational, and healthcare services for individuals with CP.
- Improved survival rates underscore the need for comprehensive, long-term support systems.
Objective:
To determine life expectancy of children with cerebral palsy.
Design:
Cohort analysis, by means of register compiled from multiple sources of ascertainment, of all children with cerebral palsy born during 1966-84 to mothers resident in Mersey region. Status of children was determined by flagging through NHS central register.
Subjects:
1258 subjects with idiopathic cerebral palsy, of whom 1251 were traced and included in analysis.
Main Outcome Measures:
Effect of functional ability (ambulation, manual dexterity, and mental ability), sex, birth weight, and gestational age on survival.
Results:
20 year survival for whole cohort was 89.3% for females and 86.9% for males. For subjects with no severe functional disabilities 20 year survival was 99% (95% confidence interval 98% to 100%), while subjects severely disabled in all three functional groups had 20 year survival of 50% (42% to 58%). Subjects with birth weight < or = 2500 g had 20 year survival of 92% (89% to 95%), while those with birth weight > 2500 g had survival of 87% (84% to 89%). Subjects with gestational age of > 37 weeks had 20 year survival of 93% (91% to 96%), while those with gestational age > or = 37 weeks had survival of 85% (83% to 88%). Birth weight and gestational age were less predictive of survival than functional disability. Best statistical model used gestational age and number of severe functional disabilities as predictors.
Conclusions:
Life expectancy of this cohort of children with cerebral palsy was greater than has been suggested in some previous studies. This has important implications for social, educational, and health services.