Natality Dashboard

Quarterly Age-specific Birth Rates: United States, 2014–Quarter 1, 2016

• Birth rates for the first quarter of 2016 declined for the following maternal age groups in comparison with the first quarter of the previous year: 15–19 (from 22.7 births per 1,000 women to 20.8), 20–24 (from 75.2 to 72.5), and 25–29 (from 100.3 to 98.4).
• In contrast, birth rates were higher in the first quarter of 2016 compared to the first quarter of 2015 for women aged 30–34 (from 95.6 to 97.9), 35-39 (from 49.0 to 50.1), and 40–44 (from 10.6 to 11.0).
• No change was seen for women aged 45 and over.

12 Month-ending Age-specific Birth Rates: United States, 2014–Quarter 1, 2016

• Birth rates for the 12-month period ending with the first quarter of 2016 declined for the following maternal age groups in comparison with the previous year ending with the first quarter of 2015: 15–19 (from 23.8 to 21.8), 20–24 (from 78.8 to 76.3), and 25–29 (from 105.8 to 103.8).
• In contrast, 12 month-ending birth rates were higher in the year ending with the first quarter of 2016 compared with the year ending with the first quarter of 2015 for maternal age groups 30–34 (from 101.1 to 102.0), 35–39 (from 51.1 to 51.9), 40–44 (from 10.7 to 11.1), and 45 and over (from 0.81 to 0.85).

Quarterly General Fertility Rates: United States, 2014–Quarter 1, 2016

• The general fertility rate decreased from 60.0 births per 1,000 women aged 15-44 in the first quarter of 2015 to 59.8 in the first quarter of 2016.

12 Month-ending General Fertility Rate: United States, 2014–Quarter 1, 2016

• The 12 month-ending general fertility rate declined from 63.0 in the year ending with the first quarter of 2015 to 62.5 in the year ending with the first quarter of 2016.

Quarterly Teen Birth Rates: United States, 2014–Quarter 1, 2016

• The teen birth rate declined from 22.7 births per 1,000 females aged 15–19 in the first quarter of 2015 to 20.8 in the first quarter of 2016.
• Birth rates for females aged 15–17 declined from 10.5 in the first quarter of 2015 to 9.2 in the first quarter of 2016.
• Birth rates for females aged 18–19 declined from 40.7 in the first quarter of 2015 to 38.1 in the first quarter of 2016.
• Birth rates for females aged 10–14 did not change from the first quarter of 2015 to the first quarter of 2016.

12 Month-ending Teen Birth Rates: United States, 2014–Quarter 1, 2016

• Birth rates for the 12-month period ending with the first quarter of 2016 declined in comparison with the previous year ending with the first quarter of 2015 for teenagers 15–19 years old (from 23.8 per 1,000 to 21.8).
• Birth rates declined over this time period for the following maternal age groups: 10–14 (from 0.3 to 0.2), 15–17 (from 10.7 to 9.6), and 18–19 (from 43.0 to 40.1).

Quarterly Total and Low-risk Cesarean Delivery Rates: United States, 2014–Quarter 1, 2016

• The percentage of cesarean deliveries decreased from 32.1% in the first quarter of 2015 to 31.9% in the first quarter of 2016.
• The percentage of low-risk cesarean deliveries remained the same from the first quarter of 2015 to the first quarter of 2016 (25.8%). .

12 Month-ending Total and Low-risk Cesarean Delivery Rates: United States, 2014–Quarter 1, 2016

• The 12 month-ending percentage of cesarean deliveries decreased from 32.2% in the first quarter of 2015 to 32.0% in the first quarter of 2016.
• The 12 month-ending percentage of low-risk cesarean deliveries decreased from the year ending with the first quarter of 2015 (25.9%) to the year ending with the first quarter of 2016 (25.7%).

Quarterly Preterm Birth Rates: United States, 2014–Quarter 1, 2016

• The preterm birth rate (less than 37 weeks) increased from 9.59% of births in the first quarter of 2015 to 9.86% in the first quarter of 2016.
• Within this group, the percentage of infants born at 34-36 weeks (late preterm) increased from 6.84% to 7.08% while no difference was seen for infants born at less than 34 weeks gestation (early preterm).

12 Month-ending Preterm Birth Rates: United States, 2014–Quarter 1, 2016

• The 12 month-ending preterm birth rate (less than 37 weeks) increased from 9.55% of births for the first quarter of 2015 to 9.68% of births for the first quarter of 2016.
• The percentage of infants born between 34-36 weeks increased from 6.80% to 6.93%, while no change was seen in the percentage of infants born early preterm (less than 34 weeks).

Quarterly Birth Rates at Term: United States, 2014–Quarter 1, 2016

• The percentage of infants born early term (37-38 weeks gestation) was higher in the first quarter of 2016 (25.57%) compared with the first quarter of 2015 (25.16%).
• The percentage of infants born full term (39-40 weeks gestation) and late term (41 weeks) declined in 2016 Q1 compared with 2015 Q1; from 58.39 % to 57.92% for full term, and from 6.46% to 6.31% for late term.

12 Month-ending Birth Rates at Term: United States, 2014–Quarter 1, 2016

• The 12 month-ending percentage of infants born early term (37-38 weeks gestation) was higher in the first quarter of 2016 (25.10%) compared with the first quarter of 2015 (24.82%).
• The 12 month-ending percentage of infants born full term (39-40 weeks gestation) was lower in the first quarter of 2016 (58.36%) compared with the first quarter of 2015 (58.66%).
• The 12 month-ending percentage of infants born late term (41 weeks gestation) was lower in the first quarter of 2016 (6.48%) compared with the first quarter of 2015 (6.56%).

Notes:

For comparability with rates for 12-month periods, the quarterly (3-month) rates have been annualized to present births per year per 1,000 population that would be expected if the quarter specific rate prevailed for 12 months.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Rates for “12 months ending with quarter” (also called moving average rate) are the average rates for the 12 months that end with the quarter on the horizontal (time) axis. Estimates for the 12-month period ending with a specific quarter include all seasons of the year and, thus, are insensitive to seasonality.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

The general fertility rate refers to the total number of births per 1,000 women aged 15-44.

For comparability with rates for 12-month periods, the quarterly (3-month) rates have been annualized to present births per year per 1,000 population that would be expected if the quarter-specific rate prevailed for 12 months.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

The general fertility rate refers to the total number of births per 1,000 women aged 15-44.

Rates for “12 months ending with quarter” (also called moving average rate) are the average rates for the 12 months that end with the quarter on the horizontal (time) axis. Estimates for the 12-month period ending with a specific quarter include all seasons of the year and, thus, are insensitive to seasonality.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

For comparability with rates for 12-month periods, the quarterly (3-month) rates have been annualized to present births per year per 1,000 population that would be expected if the quarter-specific rate prevailed for 12 months.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Rates for “12 months ending with quarter” (also called moving average rate) are the average rates for the 12 months that end with the quarter on the horizontal (time) axis. Estimates for the 12-month period ending with a specific quarter include all seasons of the year and, thus, are insensitive to seasonality.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Low-risk cesarean delivery rate refers to cesarean deliveries among singleton, nulliparous (first birth), term (37 completed weeks of gestation or more), nonbreech births. 

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Low-risk cesarean delivery rate refers to cesarean deliveries among singleton, nulliparous (first birth), term (37 completed weeks of gestation or more), nonbreech births.
Rates for “12 months ending with quarter” (also called moving average rate) are the average rates for the 12 months that end with the quarter on the horizontal (time) axis. Estimates for the 12-month period ending with a specific quarter include all seasons of the year and, thus, are insensitive to seasonality.
A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Preterm birth refers to infants born at less than 37 completed weeks of gestation, based on the obstetric estimate of gestation at delivery (see reference 3).  Early preterm refers to infants born at less than 34 weeks; late preterm refers to infants born at 34-36 weeks. 
A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Preterm birth refers to infants born at less than 37 weeks, based on the obstetric estimate of gestation at delivery (see reference 3).  Early preterm refers to infants born at less than 34 weeks gestation, while late preterm refers to infants born at 34-36 weeks gestation. 

Rates for “12 months ending with quarter” (also called moving average rate) are the average rates for the 12 months that end with the quarter on the horizontal (time) axis. Estimates for the 12-month period ending with a specific quarter include all seasons of the year and, thus, are insensitive to seasonality.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Early term refers to births at 37-38 completed weeks of gestation, full term to births at 39-40 weeks and late term to infants delivered at 41 weeks.  Gestational age is based on the obstetric estimate of gestation at delivery (see reference 3). 

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).

Notes:

Early term refers to births at 37-38 completed weeks of gestation, full term to births at 39-40 weeks and late term to infants delivered at 41 weeks.  Gestational age is based on the obstetric estimate of gestation at delivery (see reference 3).   

Rates for “12 months ending with quarter” (also called moving average rate) are the average rates for the 12 months that end with the quarter on the horizontal (time) axis. Estimates for the 12-month period ending with a specific quarter include all seasons of the year and, thus, are insensitive to seasonality.

A hollow circle indicates that estimates for the most recent quarter are significantly different from the same quarter of the previous year; these estimates are also flagged in the data table with an asterisk (*).

SOURCE: NCHS, National Vital Statistics System. Estimates for 2015 and 2016 are based on provisional data. Estimates for 2014 are based on final data (available from: http://wonder.cdc.gov/).