CHARTing Health Information for Texas

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CHARTing Health Information for Texas-->Rates & Formulas

Rates and ratios are calculated for a specific time period, typically a calendar year or a multiple of calendar years.

Abortion rate: Number of abortions obtained by women of all ages per 1,000 women 15 through 44 years of age:

(Number of legal induced terminations of pregnancy / Female population_15-44 )* 1,000

Abortion ratio: Number of abortions per 1,000 live births:

(Number of legal induced terminations of pregnancy / Number of live births) * 1,000

Age-specific rate: Number of events occurring to a specified age group per 1,000 population of the specified age group:

(Number of Events / Number in age group) * 1,000

Case fatality rate: Number of deaths ascribed to a specific disease or condition per 1,000 reported cases of thesame disease or condition:

(Number of Deaths from a specified cause / Number in cases in the specified disease) * 1,000

Cause-specific death rate: Number of deaths due to a specific cause per 100,000 population:

(Number of deaths from a specified cause / Estimated midyear population) * 100,000

Crude birth rate: Number of live births per 1,000 population:

(Number of live births / Estimated midyear Population) * 1,000

Crude death rate: Number of deaths per 1,000 population:

(Number of deaths / Estimated midyear population) * 1,000

Crude divorce rate: Number of divorces per 1,000 population:

(Number of divorces / Estimated midyear population) * 1,000

Crude marriage rate: Number of marriages per 1,000 population:

(Number of marriages / Estimated midyear population) * 1,000

Fetal death rate: Number of fetal deaths per 1,000 live births plus fetal deaths:

(Number of fetal deaths / Live births + fetal deaths) * 1,000

Fetal death ratio: Number of fetal deaths per 1,000 live births:

(Number of fetal deaths / Number of live births) * 1,000

General fertillty rate (GFR): The total number of births in a given year to women of all ages divided by thefemale population ages 15 through 44. The quotient is multiplied by 1,000. The GFR is expressed as the numberof births in a calendar year for each 1,000 women of reproductive age:

(Number of live births / Female population _15-44) * 1,000

Infant death rate: Deaths of individuals less than 1 year of age per 1,000 live births:

(Number of infant deaths _{<
1 yr} / Number of live births) * 1,000

Maternal death rate: Number of maternal deaths per 100,000 live births:

(Number of maternal deaths / Number of live births) * 100,000

Neonatal death rate: Number of individuals dying at less than 28 days of age per 1,000 live births:

(Number of infant deaths / Number of live births) * 1,000

Perinatal mortality ratio: Fetal deaths plus neonatal deaths per 1,000 live births:

(Fetal deaths + neonatal deaths / Number of live births) * 1,000

Perinatal mortality rate: Fetal deaths plus neonatal deaths per 1,000 live births plus fetal deaths

(Fetal deaths + neonatal deaths / Fetal deaths + Number of live births) * 1,000

Post-neonatal mortality rate: Number of infants dying at 28 to 365 days of age per 1,000 live births:

(Number of infant deaths _{28 to 365 days} / Number of live births) * 1,000

Pregnancy rate: Number of pregnancies to women of all ages (live births, fetal deaths, and induced abortions) ina given year per 1,000 women, ages 15-44 for a given year:

(live births + fetal deaths + induced terminations of pregnancy / female population _15-44) * 1,000

Total pregnancies are under reported since spontaneous abortions of less than 20 weeks gestation are generally unavailable or unreported.

Rate of natural increase: The difference (±) between the crude birth rate and the crude death rate

(Crude Birth Rate - Crude Death Rate)

This page was developed by Dr. Bill Spears, UTSPH, San Antonio Campus.

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