The biological component refers to the capacity to reproduce, usually called fecundity. The biological component is necessary but not the sufficient condition for fertility. Given the capacity to reproduce, the social environment in which people live largely determines whether couples will actually have children, and if so, how many, and with what kind of spacing. Various measures of fertility can be computed from census and surveys. The most commonly used source of data for this measure remains the registration system of vital events.
Information is recorded on each baby's birth certificate.
Teen birth rates and fertility rates use estimated populations as denominators in the calculation. There are no available population estimates for racial and ethnic population in Utah. In other words, there is no denominator data for us to provide a racial and ethnic birth rate in this system at this time. Crude birth rate is a common measure of fertility. The crude birth rate is the number of births per 1,000 population in a given year.