Official Site of The State of New Jersey
NJ Birth Data Query Measure Selection
- Select a measure of interest from those listed below. Click its text link to go to the corresponding query builder page.
- For further explanation of the measures, hover your cursor over the selection bar and a description of the measure will appear. Question mark icons to the right of some items provide additional information for those measures.
- Birth dataset help and documentation
- Count
Birth Rate
Live births per 1,000 population (male and female)
Fertility Rate
Live births per 1,000 females
Age-Specific Fertility Rate: Live births to women in a certain age group, per 1,000 women in that age group. e.g., Live births to teen mothers aged 15-17 per 1,000 girls aged 15-17 in the population.
General Fertility Rate
Live births per 1,000 females aged 15-44.
Total Fertility Rate
Sum of the age-specific birth rates of women in five-year age groups multiplied by five. TFR estimates the number of children a cohort of 1,000 women would bear if they all went through their childbearing years exposed to the same age-specific birth rates in effect for a particular time.
Prenatal Care Recommendations
It is recommended that pregnant women begin prenatal care during their first three months (first trimester) of pregnancy.
- Percentage With Kotelchuck Prenatal Care=Adequate
- Average Number of Prenatal Visits
Number of Prenatal Care Visits
ACOG recommends the following prenatal care visit schedule:
1 visit per month (every 4 weeks) until week 28
2 visits per month (every 2 to 3 weeks) from weeks 28 to 36
1 visit per week from week 36 until birth
Certain medical conditions in pregnancy may necessitate more visits.
Birth Weight
Very Low Birth Weight: Live-born infants whose birth weight was less than 1500 grams (about 3.3 lbs.)
Low Birth Weight: Live-born infants whose birth weight was less than 2500 grams (about 5.5 lbs.)
Normal Birth Weight: Live-born infants whose birth weight was at least 2500 grams but less than 4,000 grams
High Birth Weight: Live-born infants whose birth weight was greater than 4,000 grams (about 8.8 lbs.)
- Average Birthweight of Infants
- Percentage of All Preterm Births (<37 weeks)
Preterm Births
A preterm birth is a birth that occurs before the 37th week of gestation.
- Average Gestational Age of Infants
Gestational Age
Gestational Age is the period of time a baby is carried in the uterus or the duration of the pregnancy, measured from the first day of the last menstrual period. Full-term gestation is between 37 and 42 weeks.
- Cesarean Delivery Rate
Cesarean Rate
The percentage of infants delivered by c-section among all live births.
- Low Risk (NTSV) Cesarean Delivery Rate
Low Risk (NTSV) Cesarean Rate
The percentage of infants delivered by c-section among all live nulliparous (first birth), full term (37 completed weeks or more, based on the obstetric estimate), singleton (one fetus), vertex (head first) births. These four criteria are commonly referred to as NTSV.
- Primary Cesarean Delivery Rate
Primary Cesarean Rate
The percentage of infants delivered by c-section among all live births to mothers who never had a c-section before.
- Vaginal Birth After Cesarean (VBAC) Delivery Rate
VBAC Rate
The percentage of infants delivered vaginally among all live births to mothers who previously had a c-section.