PT  - JOURNAL ARTICLE
AU  - N Walker
AU  - J Stover
AU  - K Stanecki
AU  - A E Zaniewski
AU  - N C Grassly
AU  - J M Garcia-Calleja
AU  - P D Ghys
TI  - The workbook approach to making estimates and projecting future scenarios of HIV/AIDS in countries with low level and concentrated epidemics
AID  - 10.1136/sti.2004.010207
DP  - 2004 Aug 01
TA  - Sexually Transmitted Infections
PG  - i10--i13
VI  - 80
IP  - suppl 1
4099  - http://sti.bmj.com/content/80/suppl_1/i10.short
4100  - http://sti.bmj.com/content/80/suppl_1/i10.full
SO  - Sex Transm Infect2004 Aug 01; 80
AB  - This paper describes an approach to making estimates and short term projections of future scenarios of HIV/AIDS in countries with low level and concentrated epidemics. This approach focuses on identifying populations which through their behaviour are at higher risk of infection with HIV or who are exposed through the risk behaviour of their sexual partners. Estimates of the size and HIV prevalence of these populations allow the total number of HIV infected people in a country or region to be estimated. Subsequently, assumptions about the possible level and timing of saturation of HIV prevalence among each population can be used to explore future scenarios of HIV prevalence. The basic structure of the software used to make estimates and projections is described. This software includes a set of consistency and audit checks to help exclude unrealistic projections. The paper also discusses the strengths and weakness to this approach to making estimates and projections of HIV/AIDS in countries with low level and concentrated epidemics.