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      Survival of infants born with Down's syndrome: 1980-96.

      Paediatric and Perinatal Epidemiology
      Adult, Birth Weight, Child, Child, Preschool, Cohort Studies, Down Syndrome, epidemiology, mortality, Female, Heart Defects, Congenital, Humans, Infant, Infant, Newborn, Male, Maternal Age, Multivariate Analysis, Oceanic Ancestry Group, Pregnancy, Residence Characteristics, Sex Factors, Survival Analysis, Western Australia

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          Abstract

          The improved life expectancy of people with Down's syndrome as a result of the greater availability of surgery and advances in medical care has been widely documented. However, there has been no evaluation of survival in the Australian Down's syndrome population since the 1980s. This study aimed to evaluate the changes in survival from birth in cases of Down's syndrome notified to the Birth Defects Registry in Western Australia. Babies born with Down's syndrome between 1980 and 1996 (inclusive) and registered with the Birth Defects Registry were studied. Survival status was obtained in several ways. Cases were stratified into three cohorts for comparison. Survival curves were constructed using the methods of Kaplan and Meier. For infants born during 1980-96, survival to 1 year is now > 91%, and 85% can expect to survive until the age of 10 years. Although survival in those with heart disease showed improvement over the period studied, overall this was still a strong predictor of mortality. Survival in Aboriginal children with Down's syndrome was significantly poorer than in non-Aboriginal children, mirroring the pattern in the general population. Mortality was greater in females and in those with a low birthweight. There was no statistically significant difference in the survival between those born in metropolitan and in rural areas. There has been a considerable improvement in survival of infants born with Down's syndrome in Western Australia. This improvement is similar to findings in recent international studies. The difference in survival between Aboriginal and non-Aboriginal children is particularly disturbing. These findings are useful for both clinicians and families who need to plan for the long-term care of these children.

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          Ten-year survival of Down syndrome births

          To determine the survival status of children with Down syndrome (DS), and to document factors influencing survival.
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            Medical aspects of school-aged children with Down syndrome.

            Current and comprehensive information about the medical issues affecting children with Down syndrome (DS) is of value in counselling parents who are considering prenatal diagnosis and in planning services for people with DS as they age, especially given the continued improvements in their survival. Parents of school-aged children (mean age 11.37 years, 57.3% male, 42.7% female) with DS were identified by linking registers from the Disability Services Commission and the Birth Defects Registry. Less than half the children had cardiac and bowel conditions. More than half had ear conditions and more than three quarters had eye conditions. Ear, nose, and throat professionals were the specialists seen most often and the rate of tympanostomy tube insertion was nearly 17 times that of the general childhood population. Children with DS were over five times more likely to wear glasses than other children. These findings suggest that chronic, non life-threatening conditions impose a burden on families but do not threaten quality of life.
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              Is Down syndrome a risk for poor outcome in after repair of congenital heart defects?

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