Consider the most recent statistics available from the National Center for Health Statistics, part of the Centers for Disease Control and Prevention (CDC):
- In 2006, 4,140,419 babies were born in the US.
- The mean age for women having their first baby in 2003 is 25.2 years, compared with 25.1 years in 2002.
- Birth rates for women 35 to 39 (46.3 births per 1,000 women) and 40 to 44 (9.1 births per 1,000 women) were the highest in more than three decades.
- The birth rate for teenagers, ages 15 to 19 years, dropped 2 percent in 2005. The current rate for teens is 40.4 births per 1,000 teens.
- In 2003, the twin birth rate continued to rise, increasing 1 percent between 2002 and 2003. The current rate is 31.5 twin births per 1,000 women.
- The preterm birth rate (less than 37 weeks in the womb) rose to 12.7 percent for 2004-2005.
- Cesarean deliveries accounted for 30.2 percent of all births in 2005.
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