Preterm birth is defined as the birth of a baby before 37 completed weeks (term gestation is between 37-40 weeks). Over the past decade, preterm births have risen by more than 30% and in 2011, they accounted for 12.5% of all births, according to data published by March of Dimes. This is a steady increase from 8% before 1980 and 10.4% in 2002. To put this in real numbers, the Centers for Disease Control reports that more than half a million babies are born prematurely every year. That is, for every 7 babies born at term, there will be 1 baby that is born prematurely. What’s more, prematurity is most frequent in African American and Hispanic women as well those that are economically disadvantaged.