Study details development of functional skills in persons with Down syndrome

When expectant parents learn their child will be born with Down syndrome, they invariably have questions about what this diagnosis will mean for their son or daughter and for the rest of their family. When will their child be able to walk, to speak clearly, to care for most basic needs? Will he or she be able to hold a job, to live or travel independently? A new study from investigators at MassGeneral Hospital for Children (MGHfC) and colleagues in the Netherlands is providing answers to some of those questions.

“More and more parents are opting for prenatal testing during their pregnancies, and if they learn about a diagnosis of Down syndrome, they want to know real-life answers to such questions,” says Brian Skotko, MD, MPP, the Emma Campbell Endowed Chair on Down Syndrome at Massachusetts General Hospital (MGH), director of the MGH Down Syndrome Program, and senior author of the study published online in American Journal of Medical Genetics Part A. “Contrary to some public beliefs, people with Down syndrome never stop learning, and functional skills can still be attained and improved well into adulthood.”

While several previous studies have looked at the development of specific skills by people with Down syndrome, most of them have been small, and several were based in countries where limited support services can restrict the potential of children with Down syndrome. The current study combines the results of surveys taken of more than 2,600 families in the U.S. and the Netherlands.

The U.S. survey, sent in 2008 and 2009 to families involved with six nonprofit Down syndrome organizations across the country, asked parents to rank their child’s functional abilities in 11 areas—walking, eating, speaking, grooming/personal hygiene, reading, writing, preparing meals, working at a job, going on dates, traveling independently and living independently. They were also asked whether their child had significant health problems or educational/learning difficulties. The same questionnaire—with some subtle differences due to translation from English into Dutch—was administered online in mid-2016 to families recruited through the Dutch Down Syndrome Foundation. For both groups, the ages of the family members with Down syndrome ranged from under 5 to over 40, with the largest numbers in the youngest age groups.

From the standpoint of major functional milestones, the results indicated that most people with Down syndrome in the U.S. could walk by 25 months of age, speak reasonably well by age 12 years, maintain personal hygiene by 13 and work independently by 20. By the age of 31, 49 percent were reading reasonably well, 46 percent could write reasonably well, 34 percent were living independently, and around 30 percent could travel independently. Dutch parents reported largely similar results. In both groups, learning challenges were reported more often than were health problems, and reports of serious health problems in individuals with Down syndrome increased as they grew older.

An associate professor of Pediatrics at Harvard Medical School, Skotko explains, “Once a child with Down syndrome is born, parents frequently want to know how well their son or daughter is developing. Now we have guideposts—based on the responses of thousands of parents—that can help clinicians know when children may be falling behind their peers with Down syndrome and, when necessary, refer parents to additional supports, resources and therapies.” He also notes that recent advances in social, educational and medical supports for people with Down syndrome should lead to even greater improvement in the acquisition of functional skills.

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