CDC twin birth rate
1 Over the three decades, the twin birth rate rose by 76 percent, from 18.9 to 33.2 per 1,000 births (or from 1.9 percent to 3.3 percent of all births) (Figure 1). 2  Increases in the twin birth rate averaged more than 2 percent a year from 1980 through 2004 (peaking at more than 4 percent from 1995 to 1998). 1 In 1980, 1 in every 53 babies born in the United States was a twin, compared with 1 in every 30 births in 2009 (Figure 1). 2  Over the three decades, the twin birth rate rose by 76 percent, from 18.9 to 33.2 per 1,000 births (or from 1.9 percent to 3.3 percent of all births) (Figure 1). From 1980 to 2009, the twin birth rate in the United States rose 76 percent, from almost 1.9 percent to about 3.3 percent of all births, according to CDC data. The number of live births in twin deliveries rose 1.3 percent between 2006 and 2007 to 138,961 births. This number has more than doubled since 1980 (from 68,339). 1  137,085 twins were born in 2006. 2  The twin birth rate in 2006 was 32.2 per 1,000 births. The rate of twin births in the United States reached a 33.7 twin births out of every 1,000 deliveries in 2013, the Centers for Disease Control and Prevention said in a report on Thursday. That was up 2 percent from 2012 and a new national high, the agency said. The rate of twin births in the United States reached a 33.7 twin births out of every 1,000 deliveries in 2013, the Centers for Disease Control and Prevention said in a report on Thursday. That was up 2 percent from 2012 and a new national high, the agency said. The rate of twin births in the United States reached a 33.7 twin births out of every 1,000 deliveries in 2013, the Centers for Disease Control and Prevention said in a report on Thursday. 1 Increases in the twin birth rate averaged more than 2 percent a year from 1980 through 2004 (peaking at more than 4 percent from 1995 to 1998). 2  From 2005 to 2009, however, the pace of increase slowed to less than 1 percent annually. • The 2013 preterm birth rate was 11.39%, down 1% from 2012 and 11% from the 2006 peak. Declines in preterm rates since 2006 were reported across the United States. • The twin birth rate, which had been mostly stable for 2009–2012, rose 2% in 2013 to 33.7 per 1,000 births. Key findings. 1  In 2009, 1 in every 30 babies born in the United States was a twin, compared with 1 in every 53 babies in 1980. 2  The twin birth rate rose 76 percent from 1980 through 2009, from 18.9 to 33.3 per 1,000 births.
18.9 to 33.2 per 1,000 births