Presentation Information

Confidentiality rule:
Numbers based on 0-4 events are classified as a separate static class when a sub-county level geography (Census Tract or County Commission District) is chosen. This, in addition to offering only non-overlapping 5-year aggregates is done to assure confidentiality.
Not Reportable
At the County level or higher rates (and percents) based on 1-4 events are not reported due to statistical reliability reasons. At sub-county level (Census Tract or County Commission District), rates and percents based on 0-4 are not reported. This assures confidentiality.

Mapping Units:

Visible Layers:

Census Tracts
Census Tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity that are updated by local participants prior to each decennial census.
Census tracts generally have a population size between 1,200 and 8,000 people.  A census tract usually covers a contiguous area; however, the spatial size of census tracts varies widely depending on the density of settlement.  Census tract boundaries are delineated with the intention of being maintained over a long time so that statistical comparisons can be made from census to census.  Census tracts occasionally are split due to population growth or merged as a result of substantial population decline.
Census tract boundaries generally follow visible and identifiable features.  They may follow nonvisible legal boundaries, such as minor civil division (MCD) or incorporated place boundaries in some states and situations, to allow for census-tract-to-governmental-unit relationships where the governmental boundaries tend to remain unchanged between censuses.  State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. Reference Source: U.S. Commerce Department, United States Census Bureau, accessed July 2011
A mix of both incorporated places (legal entities) and census designated places or CDPs (statistical entities). An incorporated place is established to provide governmental functions for a concentration of people. Places always nest within a state, but may extend across county and county subdivision boundaries. An incorporated place usually is a city, town, village, or borough, but can have other legal descriptions. CDPs are delineated to provide data for settled concentrations of population that are identifiable by name, but are not legally incorporated under the laws of the state in which they are located. Each dot represents the centroid of the geographical area of the city/town. Click on the dot to get the city or town name. Reference Source: U.S. Census, January 1, 2013
County Commission Districts
For more information, see districts are current as of 2008, and were compiled by Office of Health Indicators for Planning (OHIP) staff in the Georgia Department of Public Health. History and role: In 1868 the state began creating the position of county commissioner to administer the general operations of the county. Today every county has a commissioner; many have a board of commissioners (BOC). As part of general county operations, the BOC must finance county programs. A BOC has the power to adopt ordinances, resolutions, or regulations relating to county property, county affairs, and the operation of local government ( ).
GA House Districts
Electoral districts from which State Representatives are elected. The Georgia Constitution requires not less than 180 Representatives apportioned by population from representative districts. Layer Source: Georgia Legislative and Congressional Reapportionment Office, 2012.
Senate Districts
Electoral districts from which State Senators are elected. The Georgia Constitution limits the number to not more than 56 single member districts. Senate districts are apportioned based on population. Layer Source: Georgia Legislative and Congressional Reapportionment Office, 2012.
Hospitals are the non-Federal acute-care inpatient medical facilities in Georgia. Click on the symbol to get the name. Reference Source: Georgia Hospital Assoociation, 2012
Interstates are the freeways that are part of the Interstate Highway System in Georgia. The Interstate Highway System connects major cities within the United States. Click on the line to get the Interstate number. Layer Source: Esri, March 1, 2012
Major Roads
Major roads are a combination of both federal and state highways connecting cities and towns. Click on the line to get the route number. Layer Source: Esri, March 1, 2012
Perinatal Regions
The Perinatal Regions were established by the Department of Public Health in cooperation with the six teaching hospitals located in Atlanta, Albany, Augusta, Columbus, Macon and Savannah. The Regions reflect the hospital referral patterns for high risk pregnant women and newborns Each of the six hospitals has a Regional Perinatal Center which has contracts with the state and receives funding to care for high risk pregnant women and infants as well as to train staff from other hospitals in perinatal care especially for high risk patients. Reference Source: Georgia Department of Public Health, March 2005
ZIP Code
Established by the U.S. Postal Service for distribution of mail. Zip codes do not generally respect political boundaries or census areas such as tracts. Zip codes usually do not have clearly identifiable boundaries, often serve a continually changing area, are changed periodically to meet postal requirements, and do not cover all land area in the U.S. Layer Source: Esri, June 1, 2013

Base Layers:

Base layers are background information to provide contextual references for local-level maps. They are especially suited for tract-level maps and give real-world reference to maps you create in OASIS. There are three toggle-able (on/off) base layers:
Demographic Clusters
Demographic Clusters refer to the socioeconomic status classifications created by OHIP, and are at the census block-group level. More information here:
Aerial Photography
Aerial Photography refers to ESRI's World Imagery.
Street Map
Street Map refers to ESRI's World Street Map with street-level data for North America.
Currently these Base Layers are not available when you Save/Print map.

Data Classification Methods:

Natural Breaks (Jenks)
This method minimizes within-class variance and maximizes between-class variance in an iterative series of calculations. This method seeks to partition data into classes based on natural groups in the data distribution. Natural breaks occur in the histogram at the low points of valleys. Breaks are assigned in the order of the size of the valleys, with the largest valley being assigned the first natural break.
George F. Jenks is considered a pioneer in GIS educational programs. Through an award from the Fund for Advancement of Science, Jenks identified four key objectives for cartographic training. Robert McMaster and Susanna McMaster; A History of Twentieth-Century American Academic Cartography
Source: Brewer and Pickle. Evaluation of Methods for Classifying Epidemiological Data on Choropleth Maps in a Series. Annals of the Association of American Geographers, 92(4), 2002, pp. 662-681.
The quantiles method of classification is provided because: Source: Brewer and Pickle. Evaluation of Methods for Classifying Epidemiological Data on Choropleth Maps in a Series. Annals of the Association of American Geographers, 92(4), 2002, pp. 662-681.


Age at Death
Early Neonatal Period: The period from birth to 6 days of age.
Late Neonatal Period: The period from 7 through 27 days of age.
Neonatal Period A live birth less than 28 days of age. (Early Neonatal Period + Late Neonatal Period)
Postneonatal Period: The period after birth 28 through 364 days of age.
Cause of Death
Reported causes of illness are based solely on the underlying cause of illness. The underlying cause of illness is defined by the World Health Organization as the disease or injury that initiated the sequence of events leading directly to illness or as the circumstances of the accident or violence that produced the injury. See Table 1: OASIS CAUSE LEVELS
Data Classes
Also referred to as "class breaks" or groupings of data.
Hispanic or Latino includes persons of Mexican, Puerto Rican, Cuban, South or Central American, or other Spanish culture or origin, regardless of race. Non-Hispanic + Hispanic may not equal the total number of events due to persons of unknown ethnicity.
The period from birth through the 364th day of life.
Infant Mortality Rate (IMR)
The total number of infant deaths occurring during a specified time period (usually one year) per 1,000 total live births during the same time period. The data are reported by place of residence, not place of death. Formula = [Total Number of Infant Deaths / Total Number of Live Births] * 1,000. Rates maybe cause specific).
Per the Federal Office of Management and Budget, Directive 15 (1997),


Layman Term ICD10 (ICD9) codes International Classification of Diseases Term Description
Fetal & Infant Conditions P00.0 - P96.9 (760-771.2, 771.4-779) Certain Conditions Originating in the Perinatal Period Conditions to the fetus/child associated with the period of time near birth.
Prematurity P07 (765) Disorders related to short gestation and low birth weight, not elsewhere classified Disorders related to short gestation and low birth weight, not elsewhere classified.
Lack of Oxygen to the Fetus P20 - P21 (768) Intrauterine hypoxia and birth asphyxia Any condition during pregnancy or childbirth where the oxygen is cut off to the fetus.
Respiratory Distress Syndrome P22 (769) Respiratory distress of newborn Respiratory distress syndrome of the newborn, also called hyaline membrane disease, is a lung disorder that primarily affects premature infants and causes increasing difficulty in breathing.
Birth-related Infections P35 - P39 (771.0-771.2, 771.4-771.8) Infections specific to the perinatal period Infections specific to the period of time near birth.
Birth Defects Q00.0 - Q99.9 (740-759) Congenital Malformations, Deformations and Chromosomal Abnormalities A physiological or structural abnormality that develops at or before birth and is present at birth, especially as a result of faulty development, infection, heredity, or injury.
Neural Tube Defects Q00-Q07 (740-742) Congenital malformations of the nervous system A defect occurring early in fetal development that damages the primitive tissue which will become the brain and spinal cord.
SIDS R95 (798.0) SIDS Sudden infant death syndrome (SIDS) is the unexpected, sudden death of any infant or child under one year old in which an autopsy does not show an explainable cause of death.
External Causes* V01-Y97 (E800-E999) External Causes of Morbidity All causes that affect the human body that originate from an external source.
Motor Vehicle Crashes V02-V04, V09.0, V09.2, V12-V14, V19.0-V19.2, V19.4-V19.6, V20-V79, V80.3-V80.5, V81.0-V81.1, V82.0-V82.1, V83-V86, V87.0-V87.8, V88.0-V88.8, V89.0, V89.2 (E810-E825) Motor vehicle accidents Consists of all accidents in which any motorized vehicle (car, truck, motorcycle, etc. ) was involved, including ones involving motor vehicles injuring pedestrians or bicyclists.
Falls W00-W19 (E880-E888) Falls All accidental injuries caused by an individual losing their balance.
Accidental Shooting W32-W34 (E922) Accidental discharge of firearms Injury as a result of the accidental discharge of a firearm.
Drowning W65-W74 (E910) Accidental drowning and submersion Drowning from being submerged in water or other fluid.
Fire & Smoke Exposure X00-X09 (E890-E899) Accidental exposure to smoke, fire and flames Accidental exposure to smoke, fire and flames.
Poisoning X40-X49 (E850-E869, E924.1) Accidental poisoning and exposure to noxious substances The act of ingesting or coming into contact with a harmful substance that may cause, injury, illness, or death.
Suffocation W75-W84 (E911-E913) Suffocation Suffocation from items in bed, inhalation of gastric contents, food, airtight space, or plastic bag.
All Other Unintentional Injury V01,V05-V08, V09.1, V09.3-V11, V15-V18, V19.3, V19.7-V19.9, V80.0-V80.2, V80.6-V80.9, V81.2-V81.9, V82.2-V82.9, V87.9, V88.9, V89.1, V89.3-V99, W20-W31, W35-W64, W85-99, X10-X39, X50-X59, Y85-Y86 (E800-E809, E826-E849, E900-E909, E914-E921, E923-E924.0, E924.2-E929) All Other Unintentional Injury Add to motor vehicle crashes, falls, accidental shooting, drowning, fire & smoke exposure, poisoning, and suffocation to obtain all unintentional injury.
Homicide X85-Y09, Y87.1 (E960-E969) Assault (homicide) The killing of one person by another.
* Note: All Infant Deaths having external causes (injuries) are assigned their appropriate valid External Cause of Injury Code (E-Code) in accordance with STIPDA (State and Territorial Injury Prevention Directors Association) 2003 guidelines. The standards can be found at:

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V1.1 (06/02/2015)