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In addition to the
rectangular data file discussed in section 2, the AIDS Public Information
Data Set contains tabular data by state,
metropolitan area, and county or health district. These tables consist of
frequency tables and two-way cross tabulations of eight variables extracted
from CDC’s national AIDS surveillance data set. (For counties or health
districts, the data set contains only one-way tables of three variables:
age, race/ethnicity, and sex). The data set contains one set of tables for
the entire United States, one set for each state and for the District of
Columbia, one set for each MSA, and one set for each county or health district.
All MSAs with 500,000 or more population are included in the data set. Selected
MSAs with populations between 100,000 and 500,000, and selected counties
or health districts are included in the data set, based on the data release
policies of the individual states.
Data from MSAs with populations between 100,000 and 500,000 are included
for Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii,
Idaho, IA, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maine, Maryland,
Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New
Hampshire, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Oregon,
Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia,
Washington, West Virginia, and Wyoming.
Data from individual counties are included for Arkansas, Delaware, Georgia,
Hawaii, Indiana, Louisiana, Minnesota, Missouri, Nevada, New Hampshire,
New Jersey, OH, Oklahoma, Oregon, Pennsylvania, Rhode Island, and Washington.
Data from health districts are included for Florida, Idaho, Kentucky, Mississippi,
Montana, Nebraska, New Mexico, South Carolina, Tennessee, Virginia, and
West Virginia.
See Appendix B for a list of MSAs. See
Appendix C for a list of counties
which comprise each health district.
The variables included in the state and MSA tables are:
| Variable
|
Description |
|
age |
Age group at diagnosis of the first AIDS-indicator condition |
|
categ |
Indicates which of the CDC AIDS case revisions the patient meets |
|
dth_hyr |
Half-year of death for patients reported dead |
|
dx_hyr |
Half-year of diagnosis of first AIDS-indicator condition
|
|
ent_hyr |
Half-year in which CDC first received information about the case
|
|
transcat |
HIV transmission category |
|
race/ethnicity |
Race/ethnicity of patient |
|
sex |
Sex of patient |
For counties and health districts, one-way tables are available
for the variables age, race/ethnicity, and sex. The values
used for the variables are printed below.
Age
This variable contains the patient’s
age when he or she was first diagnosed with an AIDS-indicator condition.
Ages printed in the documentation
file are grouped as follows:
0 – 1 year old
1 – 12 years old
13 – 19 years old
20 – 29 years old
30 – 39 years old
40 – 49 years old
50 – 59 years old
60 + years old
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Categ
This variable reflects revisions made to the CDC surveillance definition
for AIDS. Only cases meeting the current (1993) surveillance definition
are included in the data set. Categ indicates whether the patient also meets
the pre-1985, 1985, or 1987 surveillance definition, and whether the diagnosis,
if it meets the 1987 or 1993 definition, was definitive or presumptive.
Cases that meet more than one of these surveillance definitions are classified
into the definition category listed first. For more information about the
1993 definition, see
Morbidity and
Mortality Weekly Report, Recommendations and Reports, December 18, 1992.
| 1 |
= |
Case meets the pre-1985 surveillance definition |
| 2 |
= |
Case meets the 1985 surveillance definition |
| 3 |
= |
Case meets the 1987 surveillance definition and was
diagnosed definitively |
| 4 |
= |
Case meets the 1987 surveillance definition and was
diagnosed presumptively |
| 5 |
= |
Case meets the 1993 surveillance definition:
pulmonary tuberculosis, recurrent pneumonia, and/or cervical cancer
(definitive diagnosis) |
| 6 |
= |
Case meets the 1993 surveillance definition:
pulmonary tuberculosis and/or recurrent pneumonia (presumptive
diagnosis) |
| 7 |
= |
Case meets the 1993 surveillance definition, severe
HIV-related immunosuppression |
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Dth_hyr
For patients whose death has
been reported to CDC, this variable contains the half-year of death. The
first four numbers indicate the year;
the
last two indicate the first or second half of that year. For example,
the value “198802” indicates that the patient died in the
second half of 1988. Patients whose death has been reported to CDC but
whose date of death is unknown are coded as “999999.”
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Dx_hyr
This variable contains the half-year in which the first AIDS-indicator
condition was diagnosed. The first four numbers indicate the year; the
last two indicate the first or second half of that year.
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Ent_hyr This variable contains the half-year in which CDC received the case report.
The first four numbers indicate the year; the last two indicate the first
or second half of that year.
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Transcat For surveillance purposes, AIDS cases are counted only once in a hierarchy
of transmission categories. Persons with more than one reported HIV risk
factor are classified in the category listed first in the transmission category
hierarchy, except for men with both a history of sexual contact with other
men and injecting drug use. They make up a separate category.
“Men who have sex with men” cases include men who report sexual
contact with other men (i.e., homosexual contact) and men who report sexual
contact with both men and women (i.e., bisexual contact). “Heterosexual
contact” cases are in persons who report specific heterosexual contact
with a person with, or at increased risk for, HIV infection (e.g., an injecting
drug user).
Adults/adolescents born in, or
who had sex with someone born in, a country where heterosexual transmission
was believed to be the predominant mode
of HIV transmission (formerly classified as Pattern II countries by the
World Health Organization) are no longer classified as having heterosexually
acquired AIDS unless they meet the criteria stated in the preceding paragraph.
Similar to other cases in persons who were reported without information
about a behavioral or a transfusion risk factor, these cases are now classified
(in the absence of other risk factor information that would classify them
in another transmission category) as “no risk factor reported or identified” (see
Morbidity and Mortality Weekly Report, March 11, 1994). Children whose mother
was born in, or whose mother had sex with someone born in, a Pattern II
country are now classified (in the absence of other risk factor information
that would classify them in another transmission category) as “Mother
with/at risk for HIV infection: has HIV infection, risk factor not specified.”
“Risk factor not reported or identified” cases
are in persons with no reported history of exposure to HIV through any
of the routes listed
in the hierarchy of transmission categories. Risk factor not reported or
identified cases include persons who are currently under investigation by
local health department officials; persons whose HIV risk factor history
is incomplete because they died, declined to be interviewed, or were lost
to follow-up; and persons who were interviewed or for whom other follow-up
information was available and no HIV risk factor was identified. Persons
who have an HIV risk factor identified at the time of follow-up are reclassified
into the appropriate transmission category.
| 01 |
= |
Men who have sex with men |
| 02 |
= |
Injecting drug use |
| 03 |
= |
Men who have sex with men and inject drugs |
| 04 |
= |
Adult/adolescent hemophilia/coagulation disorder |
| 05 |
= |
Heterosexual contact with a person with, or at
increased risk for, HIV infection |
| 07 |
= |
Adult/adolescent receipt of blood transfusion,
blood components, or tissue |
| 08 |
= |
Adult/adolescent risk factor not reported or identified |
| 09 |
= |
Pediatric hemophilia/coagulation disorder |
| 10 |
= |
Mother with, or at risk for, HIV infection |
| 11 |
= |
Pediatric receipt of blood transfusion, blood components, or tissue |
| 12 |
= |
Pediatric risk factor not reported or identified |
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Race/ethnicity
| 1 |
= |
White (not Hispanic) |
| 2 |
= |
Black (not Hispanic) |
| 3 |
= |
Hispanic |
| 4 |
= |
Asian/Pacific Islander |
| 5 |
= |
American Indian/Alaskan Native |
| 9 |
= |
Unknown |
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Sex
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Small Cell Restriction
In accordance with CDC guidelines
on protecting confidentiality and with an agreement made with state and
local health departments for release of
these data, entries whose value is three or less are not included in the
tables. In addition, the AIDS Public Information Data Set software allows
you to combine data from more than one state, MSA, or county/health district
in either separate or aggregate form. If you select the aggregate option,
each count may be off by an amount equal to three times the number of states/MSAs/counties
aggregated. For example, if you select data from California, Washington
State, and Oregon, each count may be off by as many as nine cases (three
times the number of states—in this case, three).
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