February 10, 2016
A new NCHS report presents findings on maternal smoking prevalence and cessation before and during pregnancy as collected on the 2003 U.S. Standard Certificate of Live Birth, for a 46-state and District of Columbia reporting area, representing 95% of all births in the United States.
- About 1 in 10 women who gave birth in 2014 smoked during the 3 months before pregnancy (10.9%), and about one-quarter of these women (24.2%) did not smoke during pregnancy (i.e., quit before pregnancy).
- The smoking rate at any time during pregnancy was 8.4%, with 20.6% of women who smoked in the first or second trimesters quitting by the third trimester.
- Smoking during pregnancy was more prevalent for women aged 20–24 (13.0%) than for other ages, and by race and Hispanic origin, the highest rate was for non-Hispanic American Indian or Alaska Native women (18%).
January 14, 2016
A mother’s age at birth, and particularly the mean or “average” age when a mother has her first child, is of interest to researchers and the public. Mean age can affect the total number of births a mother has over a lifetime, which in turn impacts the composition and growth of the U.S. population.
Age of mother is associated with a range of birth outcomes, such as multiple births and birth defects. An earlier report presented trends in mean age from 1970 to 2000.
An NCHS report presents trends in the mean age at first and higher birth orders by race and Hispanic origin of mother and by state from 2000 to 2014.
- The mean age of mothers has increased from 2000 to 2014 for all birth orders, with age at first birth having the largest increase, up from 24.9 years in 2000 to 26.3 years in 2014.
- Increases in the average age for all birth orders were most pronounced from 2009 to 2014.
- In 2014, Asian or Pacific Islander mothers had the oldest average age at first birth (29.5 years), while American Indian or Alaska Native mothers had the youngest (23.1 years).
- Mean age at first birth increased in all states and the District of Columbia (D.C.) from 2000 to 2014, but D.C. (3.4 years) and Oregon had the largest increases (2.1 years).
December 23, 2015
NCHS has released a new report that presents 2014 data on U.S. births according to a wide variety of characteristics.
Data are presented for maternal age, live-birth order, race and Hispanic origin, marital status, attendant at birth, method of delivery, period of gestation, birthweight,and plurality.
Birth and fertility rates are presented by age, live-birth order, race and Hispanic origin, and marital status.
- In 2014, 3,988,076 births were registered in the United States, up 1% from 2013.
- The general fertility rate rose slightly to 62.9 per 1,000 women aged 15–44, the first increase in the rate since 2007.
- The teen birth rate fell 9% from 2013 to 2014, to 24.2 per 1,000 females aged 15–19.
- Birth rates declined for women in their early 20s but increased for women aged 25–39.
- The total fertility rate (estimated number of births over a woman’s lifetime) rose slightly to 1,862.5 births per 1,000 women.
- The birth rate for unmarried women declined for the sixth straight year.
- The cesarean delivery rate declined to 32.2%.
- The preterm birth rate declined 1% to 9.57%, but the low birthweight rate was essentially unchanged at 8%.
- The 2014 twin birth rate was 33.9 per 1,000 births, a new high for the United States; the triplet and higher-order multiple birth rate dropped 5% to 113.5 per 100,000 total births.
October 8, 2014
A new NCHS report presents 2012 U.S. final mortality data on deaths and death rates by demographic and medical characteristics. These data provide information on mortality patterns among residents of the United States by such variables as sex, race and ethnicity, and cause of death. Information on mortality patterns is key to understanding changes in the health and well-being of the U.S. population. Life expectancy estimates, age-adjusted death rates by race and ethnicity and sex, 10 leading causes of death, and 10 leading causes of infant death were analyzed by comparing 2012 final data with 2011 final data.
Key Findings from the Report:
- Life expectancy at birth for the U.S. population reached a record high of 78.8 years in 2012.
- The age-adjusted death rate for the United States decreased 1.1% from 2011 to 2012 to a record low of 732.8 per 100,000 standard population.
- The 10 leading causes of death in 2012 remained the same as in 2011. Age-adjusted death rates decreased significantly from 2011 to 2012 for 8 of the 10 leading causes and increased significantly for one leading cause (suicide).
- The infant mortality rate decreased 1.5% from 2011 to 2012 to a historic low of 597.8 infant deaths per 100,000 live births. The 10 leading causes of infant death in 2012 remained the same as in 2011.
November 18, 2009
Late preterm birth rates have risen among mothers of all ages from 1990 to 2006, including teenage mothers (up 5 percent). Among mothers age 25 years and over, late preterm birth rates increased by more than 20 percent from 1990 to 2006. Younger (under age 20 years) and older (40 years and over) mothers are the most likely to have a late preterm baby.
For more trends in late preterm births in the United States, visit the NCHS Data Brief at http://www.cdc.gov/nchs/data/databriefs/db24.pdf.
August 26, 2009
On Friday, August 28, 2009, CDC’s National Center for Health Statistics released “The Effect of Hurricane Katrina: Births in the U.S. Gulf Coast Region, Before and After the Storm.” The report documents how births were impacted in 91 Federal Emergency Management Agency (FEMA) designated counties and parishes of Alabama, Louisiana, and Mississippi for a 12-month period before and after Hurricane Katrina (August 29, 2004 to August 28, 2006). Visit the NCHS Press Room for more information.
August 12, 2009
Did you know that in the United States, the average age of a mother at first birth has increased 3.6 years since 1970? Not only are U.S. women starting their families later in life, but the trend depends a great deal on a person’s race/ethnicity and where she lives. Also, the U.S. has a much lower average age at first birth than many developed countries. To read more about this, visit the new Data Brief from the National Center for Health statistics, “Delayed Childbearing: Women Are Having Their First Child Later in life.” Also, you can listen to the Statcast or ask questions of the author on this blog.