Live birth: An infant with signs of life at birth.
County: The county of residence (map of state)
Time Span: The years during which the event occurred (birth date of infant)
Fertility: Births to a particular population of women (i.e. age group and/or race)

Childs Weight:
    Very low: A live birth weighing less than 1,500 grams (3 lb. 5 oz. or less).
    Low: A live birth weighing less than 2,500 grams (5 lb. 8 oz. or less).
    Normal: A live birth weighing between 2,500 and 3,999 grams (5 lb. 9 oz. - 8 lb. 13 oz.).
    High: A live birth weighing 4,000 grams or more (8 lb. 14 oz. or more).

Mother's Race:
    Beginning with 1990, all Race/Ethnic specific rates are calculated using population estimates from the National Center for Health Statistics with bridged race categories.

    The National Center for Health Statistics has discontinued the postcensal bridged-race population estimates (used for calculating rates) with the release of the Vintage 2020 estimates. Starting with 2021 death statistics, OK2SHARE will display the racial categories used by the U.S. Census Bureau - White, Black, American Indian, Asian, Native Hawaiian and Pacific Islander, and Two or more races. Hispanic Origin did not change. There will also be 2010 to 2020 trends using the new race categories along with the existing bridged race categories.

Marital Status:
    Not married: Never married, divorced, or widowed at the time of the infant's birth
    Married: At the time of the infant's birth

Mother's Education:
Low education is considered to be less than 12 grades of school completed
    0-8 years: No education to less than some high school completed
    9-12 years: At least some high school completed
    12 years: High school graduate, G.E.D., or some other equivalent
    13-15 years: Some college
    >= 16 years: At least a college graduate

Prenatal Care: Time prenatal care began (first, second, third trimester or none)

Adequacy of Care :
    Adequate: 1st trimester and 10+ visits
    Intermediate: 1st or 2nd trimester and 4-9 visits
    Little: 1st or 2nd trimester and 1-3 visits
    Late: 3rd trimester Prenatal Care
    No: No Prenatal Care visits
    Poor: Late or no Prenatal Care

Plurality: Number of infants delivered at that time

Previous Live Births:
  High parity:
    Teens - Under 20 years of age with 2 or more previous births
    Adults - Ages 20 and over with 4 or more previous births

---

Other Commonly Used Terms

  Infant Death: A live birth dying before completing one year of life
  Neonatal death: A live birth dying before 28 days of life
  Post-neonatal death: A live birth dying between 29 days and one year of life
  Fetal death (still birth): Fetus 20 weeks or more gestation, born dead
  Perinatal death: Combined fetal and neonatal deaths

---

County: (Map of Oklahoma Counties)

Regions: (Map of Regions)

Region	Counties
Central	Cleveland, Oklahoma
Northeast	Adair, Cherokee, Craig, Creek, Delaware, Kay, Lincoln, Mayes, Muskogee, Noble, Nowata, Okfuskee, Okmulgee, Osage, Ottawa, Pawnee, Payne, Rogers, Sequoyah, Wagoner, Washington
Northwest	Alfalfa, Beaver, Blaine, Canadian, Cimarron, Custer, Dewey, Ellis, Garfield, Grant, Harper, Kingfisher, Logan, Major, Roger Mills, Texas, Woods, Woodward
Southeast	Atoka, Bryan, Choctaw, Coal, Haskell, Hughes, Johnston, Latimer, LeFlore, Marshall, McCurtain, McIntosh, Murray, Pittsburg, Pontotoc, Pottawatomie, Pushmataha, Seminole
Southwest	Beckham, Caddo, Carter, Comanche, Cotton, Garvin, Grady, Greer, Harmon, Jackson, Jefferson, Kiowa, Love, McClain, Stephens, Tillman, Washita
Tulsa	Tulsa

Sub-state Planning District: (Map of Sub-state Planning District)

Planning District	Name	Counties
ACOG	Association of Central Oklahoma Governments	Canadian, Cleveland, Logan, Oklahoma
ASCOG	Association of South Central Oklahoma Governments	Caddo, Comanche, Cotton, Grady, Jefferson, McClain, Stephens, Tillman
COEDD	Central Oklahoma Economic Development District	Hughes, Lincoln, Okfuskee, Pawnee, Payne, Pottawatomie, Seminole
EODD	Eastern Oklahoma Development District	Adair, Cherokee, McIntosh, Muskogee, Okmulgee, Sequoyah, Wagoner
GGEDA	Grand Gateway Economic Development District Association	Craig, Delaware, Mayes, Nomata, Ottawa, Rogers, Washington
INCOG	Indian Nations Council of Governments	Creek, Osage, Tulsa
KEDDO	Kiamichi Economic Development District of Oklahoma	Choctaw, Haskell, Latimer, LeFlore, McCurtain, Pittsburg, Pushmataha
NODA	Northern Oklahoma Development Association	Alfalfa, Blaine, Garfield, Grant, Kay, Kingfisher, Major, Noble
OEDA	Oklahoma Economic Development Association	Beaver, Cimmarron, Dewey, Ellis, Harper, Texas, Woods, Woodward
SODA	Southern Oklahoma Development Association	Atoka, Bryan, Carter, Coal Garvin, Johnston, Move, Marshall, Murray, Pontotoc
SWODA	South Western Oklahoma Development Authority	Beckham, Custer, Greer, Harmon, Jackson, Kiowa, Roger Mills, Washita

IHS Oklahoma City Area Service Units (Map of IHS Service Units)

The Oklahoma City Area Indian Health Service consists of 12 Service Units.  Nine of these Service Units are located in the State of Oklahoma. A Service Unit is an administrative entity with the Indian Health Service. Each Service Unit in Oklahoma is comprised of multiple counties.

Service Unit	Counties
Ada	Bryan, Carter, Coal, Garvin, Johnston, Love, Marshall, McClain, Murray, Pontotoc
Claremore	Craig, Creek, Delaware, Mayes, Nowata, Okfuskee, Okmulgee, Ottawa, Rogers, Tulsa, Wagoner, Washington
Clinton	Alfalfa, Beaver, Beckham, Blaine, Canadian, Cimarron, Custer, Dewey, Ellis, Greer, Harper, Kingfisher, Major, Roger Mills, Texas, Washita, Woods, Woodward
Lawton	Caddo, Comanche, Cotton, Grady, Harmon, Jackson, Jefferson, Kiowa, Stephens, Tillman
Pawnee	Garfield, Grant, Kay, Noble, Osage, Pawnee, Payne
Shawnee	Cleveland, Lincoln, Logan, Oklahoma, Pottawatomie
Tahlequah	Adair, Cherokee, McIntosh, Muskogee, Sequoyah
Talihina	Atoka, Choctaw, Haskell, Latimer, LeFlore, McCurtain, Pittsburg, Pushmataha
Wewoka	Hughes, Seminole

---

Calculations

  Birth Rate = 1000 x Number of Resident Live Births / Resident Population
  Fertility Rate = 1000 x Number of Resident Live Births / Female Resident Population ages 15 - 44

***when calculating the rate for combined years the population is the sum of the populations for the specified time span***