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Spatial Epidemiology of HIV Infection

This study has been completed.
Sponsor:
Information provided by:
National Taiwan University Hospital
ClinicalTrials.gov Identifier:
NCT01377272
First received: October 22, 2008
Last updated: July 1, 2011
Last verified: May 2011

October 22, 2008
July 1, 2011
October 2008
June 2009   (final data collection date for primary outcome measure)
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Complete list of historical versions of study NCT01377272 on ClinicalTrials.gov Archive Site
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Spatial Epidemiology of HIV Infection
Spatial Epidemiology of HIV Infection

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.

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

Observational
Time Perspective: Retrospective
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Non-Probability Sample

NTUH patients

  • HIV Infections
  • Acquired Immunodeficiency Syndrome
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
1264
August 2009
June 2009   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • HIV/AIDS patients of NTUH

Exclusion Criteria:

  • HIV/AIDS patient whose address cannot be geocoded
Both
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No
Contact information is only displayed when the study is recruiting subjects
Taiwan
 
NCT01377272
200808048R
Yes
Institute of Epidemiology
National Taiwan University Hospital
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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
National Taiwan University Hospital
May 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP