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Health Indicator Report of Late Preterm Births

Late preterm births have higher morbidity and mortality rates than full term births.


Missing and unknown responses are not included in percent calculations.   Data for White, Black, and Asian do not include Hispanics. Hispanic includes all individuals who list their ethnicity as Hispanic regardless of race.

Data Source

Birth Certificate Database, Office of Vital Statistics and Registry, New Jersey Department of Health

Data Interpretation Issues

The New Jersey Department of Health has been using the obstetric estimate (OE) to determine gestational age since 1989, while the National Center for Health Statistics (NCHS) had been calculating it using date of last menstrual period (LMP). In 2014, NCHS changed the standard for gestational period from the LMP-based gestational age to the OE-based gestational age. OE-based gestational age for U.S. data became available for years 2007 and later in February, 2016. Data in reports published prior to February, 2016 will not match data shown here. Refer to Measuring Gestational Age in Vital Statistics Data: Transitioning to the Obstetric Estimate ([]) for more information.


Percent of live births between 34 weeks and 36 weeks of gestation based on obstetric estimate.


Number of live births between 34 and 36 weeks of gestation to NJ resident mothers.


Number of live births to NJ resident mothers.

Healthy People Objective: Reduce late preterm births (i.e., live births at 34 to 36 weeks of gestation)

U.S. Target: 8.1 percent

How Are We Doing?

The percentage of infants born late preterm (34-36 weeks of gestation) among New Jersey residents is slowly declining. Blacks have the highest rate among racial/ethnic groups but the gap is narrowing.

How Do We Compare With the U.S.?

The late preterm birth rate in New Jersey is below that of the national as a whole.

What Is Being Done?

The [ Division of Family Health Services] in the New Jersey Department of Health administers programs to enhance the health, safety and well-being of families and communities in New Jersey. Several programs are aimed at improving birth outcomes.
Page Content Updated On 01/09/2017, Published on 11/06/2017
The information provided above is from the Department of Health's NJSHAD web site ( The information published on this website may be reproduced without permission. Please use the following citation: " Retrieved Sun, 15 July 2018 16:47:55 from Department of Health, New Jersey State Health Assessment Data Web site: ".

Content updated: Wed, 23 May 2018 05:01:08 EDT