In the United States, almost one in eight babies is born between 22 and 37 weeks’ gestation. That’s nearly the highest rate in the industrialized world —*second only to Cyprus. The U.S. prematurity rate is double that of Finland, Japan, Norway and Sweden, according to the 2013 report by Save the Children.
At any given gestational age, doctors in the United States are as good as doctors in other developed countries at keeping babies alive.
“If you look at a baby born at 25 weeks in the United States and any other developed country, we do really well,” says neonatologist Philip Sunshine, MD, who has cared for more than 30,000 premature babies during his career at Stanford and Packard Children’s. “We have the technology and we have the resources.”
Some causes and risk factors for preterm births are well-established: smoking cigarettes or drinking during pregnancy, infections, high blood pressure or diabetes. But even when studies take these risk factors into account, there are still unexplained differences in infant mortality between different populations. Women on Medicaid, for example, are more likely to deliver preterm, as are women in lower income brackets. And single women, those who induce labor, as well as women with a husband deployed with the military, are more likely to have a preterm baby.