The crude birth rate is the number of births per 1,000 people in a population. The most common way to calculate fertility rates is to use the crude birth rate. There are a few ways to calculate fertility rates. Fertility rates are highest around the time of ovulation. The third factor is the time of the month. If you are using a contraceptive, your fertility rates will be lower than if you are not using a contraceptive.
Another important factor is the type of contraception you are using. Age is a major determinant of fertility rates, with fertility rates dropping as you get older. When it comes to fertility rates, there are a few things you need to take into account.
