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Most low birth weight babies become productive adults, study finds

Date:
December 1, 2010
Source:
Michigan State University
Summary:
Most survivors of extremely low birth weight grow up to become productive adults, according to a new study.

Most survivors of extremely low birth weight grow up to become productive adults, according to a study led by a Michigan State University economist.

Extremely low birth weight is defined as less than about 2.2 pounds. About one in 200 babies is born at that size. But because relatively few survived prior to the 1980s, few studies have examined their adult outcomes.

The study led by MSU's John Goddeeris found that while these survivors were somewhat less productive as adults, on average, than normal-weight subjects, the productivity deficits were not very large. The study, which appears in the journal Pediatrics, measured education and salary levels.

"Our findings suggest that the long-term economic impact of being born at extremely low birth weight is pretty modest for typical survivors," said Goddeeris, professor of economics.

The study is part of ongoing research led by Saroj Saigal at McMaster University in Ontario, Canada. Co-researchers include Nigel Paneth at MSU, Michael Boyle and Barbara Stoskopf at McMaster and David Streiner at McMaster and University of Toronto. The team followed a cohort of 149 extremely low birth weight adults and 133 normal birth weight adults born in Canada around 1980.

Survival rates for extremely low birth weight babies have improved markedly. In the United States, mortality rates for babies born between about 1.1 pounds and 2.2 pounds decreased from 58 percent in 1983 to 31 percent in 2005. Researchers believe this is due to advances in neonatal care.

Saving infants who are extremely small or extremely preterm is very expensive, the study says. Some survivors experience severe nervous-system impairments such as mental retardation, while a large fraction experience more minor learning and behavioral problems.

But the study reinforces the argument that, on the whole, advances in neonatal care have had benefits far greater than costs, Goddeeris said.

"Some extremely low birth weight survivors will remain dependent on others," Goddeeris said, "but most make a successful transition to adulthood and become independent and productive adults. Their education and earnings levels are not so different from their peers."

The research was funded by the National Institute of Child Health and Human Development and the Canadian Institutes of Health.


Story Source:

The above story is based on materials provided by Michigan State University. Note: Materials may be edited for content and length.


Journal Reference:

  1. J. H. Goddeeris, S. Saigal, M. H. Boyle, N. Paneth, D. L. Streiner, B. Stoskopf. Economic Outcomes in Young Adulthood for Extremely Low Birth Weight Survivors. Pediatrics, 2010; 126 (5): e1102 DOI: 10.1542/peds.2010-1242

Cite This Page:

Michigan State University. "Most low birth weight babies become productive adults, study finds." ScienceDaily. ScienceDaily, 1 December 2010. <www.sciencedaily.com/releases/2010/12/101201102610.htm>.
Michigan State University. (2010, December 1). Most low birth weight babies become productive adults, study finds. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2010/12/101201102610.htm
Michigan State University. "Most low birth weight babies become productive adults, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/12/101201102610.htm (accessed April 20, 2014).

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