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Sex Transm Infect. 2010 Dec;86 Suppl 2:ii16-21. doi: 10.1136/sti.2010.044222.

The Spectrum projection package: improvements in estimating incidence by age and sex, mother-to-child transmission, HIV progression in children and double orphans.

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1
Futures Institute, 41A New London Turnpike, Glastonbury, CT 06033, USA. jstover@futuresinstitute.org

Abstract

BACKGROUND:

The Spectrum program is used to estimate key HIV indicators from the trends in incidence and prevalence estimated by the Estimation and Projection Package or the Workbook. These indicators include the number of people living with HIV, new infections, AIDS deaths, AIDS orphans, the number of adults and children needing treatment, the need for prevention of mother-to-child transmission and the impact of antiretroviral treatment on survival. The UNAIDS Reference Group on Estimates, Models and Projections regularly reviews new data and information needs, and recommends updates to the methodology and assumptions used in Spectrum.

METHODS:

The latest update to Spectrum was used in the 2009 round of global estimates. This update contains new procedures for estimating: the age and sex distribution of adult incidence, new child infections occurring around delivery or through breastfeeding, the survival of children by timing of infection and the number of double orphans.

PMID:
21106510
PMCID:
PMC3173821
DOI:
10.1136/sti.2010.044222
[Indexed for MEDLINE]
Free PMC Article
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