Spatial Epidemiology of HIV Infection

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01377272
Recruitment Status : Completed
First Posted : June 21, 2011
Last Update Posted : July 4, 2011
Information provided by:
National Taiwan University Hospital

Brief Summary:
Data will be extracted from the National Taiwan University Hospital (NTUH) medical records database, geocoded according to the street address so that the case number, incidence, etc could be mapped. The spatial data would be used to detect the aggregation of HIV cases, existence of "hot spots" and then determine if they may merit further investigation or may have occurred by chance. The results from these GIS-based analyses would address local variations in HIV prevalence and transmission.

Condition or disease
HIV Infections Acquired Immunodeficiency Syndrome

Detailed Description:
The transmission routes of human immunodeficiency virus (HIV) are well known and many control programs focusing on risk groups and behavior have been undertaken. However, the risk factors of HIV transmission are not only at individual level (eg: demographic, behavior, and genetic risk factors), socioeconomic and environmental factors also take important roles. In Taiwan, few researches explored the spatial distribution of HIV infection. Studies in other countries observed a significant geographic variation in HIV infection. To understand the spatial pattern of HIV infection in depth, the present study aims to retrospectively investigate the epidemiological and geographic characteristics of HIV infection using the medical records database of National Taiwan University Hospital. A Geographic information system (GIS) and spatial statistics will be used to analyze the geographic patterns to determine whether spatial dispersion or clustering. There are two aims of this study. One is to investigate the epidemiology of HIV infection in Taipei City. The second is to analyze the spatial characterizes of HIV infection, including disease mapping, geographic correlation studies, and identifying the presence of HIV clusters and their potential spatial risk factors. In addition, we want to examine whether there are different distributions between different classificatory groups. Finally, we hope that our findings would give some direction for local health and policy planners to improve the HIV intervention and prevention strategies

Study Type : Observational
Actual Enrollment : 1264 participants
Time Perspective: Retrospective
Official Title: Spatial Epidemiology of HIV Infection
Study Start Date : October 2008
Actual Primary Completion Date : June 2009
Actual Study Completion Date : August 2009

Resource links provided by the National Library of Medicine

MedlinePlus related topics: HIV/AIDS

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
NTUH patients

Inclusion Criteria:

  • HIV/AIDS patients of NTUH

Exclusion Criteria:

  • HIV/AIDS patient whose address cannot be geocoded

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01377272

Institute of Epidemiology, National Taiwan University
Taipei, Taiwan
Sponsors and Collaborators
National Taiwan University Hospital
Study Director: Chi-Tai Fang, ph.D Institute of Epidemiology, National Taiwan University
Study Director: Tzai-Hung Wen, ph.D Institute of Epidemiology, National Taiwan University
Principal Investigator: Ann-Chi Yang, bechelor Institute of Epidemiology, National Taiwan University

Responsible Party: Institute of Epidemiology Identifier: NCT01377272     History of Changes
Other Study ID Numbers: 200808048R
First Posted: June 21, 2011    Key Record Dates
Last Update Posted: July 4, 2011
Last Verified: May 2011

Keywords provided by National Taiwan University Hospital:
spatial epidemiology
geographic information system

Additional relevant MeSH terms:
Communicable Diseases
HIV Infections
Acquired Immunodeficiency Syndrome
Immunologic Deficiency Syndromes
Lentivirus Infections
Retroviridae Infections
RNA Virus Infections
Virus Diseases
Sexually Transmitted Diseases, Viral
Sexually Transmitted Diseases
Immune System Diseases
Slow Virus Diseases