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Maternal Age: Distribution by Age Group, New Jersey, 2022

Indicator Report Data View Options

Why Is This Important?

Infants born to teenage mothers are at elevated risk of poor birth outcomes, including higher rates of low birth weight, preterm birth, and infant death. The limited educational, social, and financial resources often available to teenage mothers add to their higher risk profile. The increase in birth rates for women 35 years of age and over during the last 40 years has been linked, in part, to the use of fertility-enhancing therapies. Multiple deliveries, an outcome associated with infertility treatment, are also at elevated risk of poor birth outcomes, such as higher rates of low birth weight, preterm birth, and infant death.


Maternal age is the age at which a woman delivers a live-born infant.

Data Source

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

How the Measure is Calculated

  • Numerator:

    Number of births to mothers by age
  • Denominator:

    Total number of live births (minus those with unknown age)

Relevant Population Characteristics

Most indicator profiles in the Birth and Infant Health section show data by maternal age. It is available in the Data Views section of an indicator profile.

Related Relevant Population Characteristics Indicators:

Health Status Outcomes

Some birth outcomes are more common among certain maternal age groups.

Related Health Status Outcomes Indicators:

Health Topic Pages Related to: Maternal Age

Indicator Data Last Updated On 04/09/2024, Published on 04/09/2024
Center for Health Statistics, New Jersey Department of Health, PO Box 360, Trenton, NJ 08625-0360, e-mail: (