ASTRA and its associated studies, CIPHER and AURAH, present independent research funded by the National Institute for Health Research (NIHR) under its Programme Grants for Applied Research funding scheme (RP-PG-0608-10142).

The studies were some of the components of CAPRA, a programme for the Comprehensive Assessment of the Prevention Role of Antiretroviral therapy.

The studies also received support through the Comprehensive Clinical Research Network.

This website is provided courtesy of University College London.

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The ASTRA study aimed to assess sexual risk behaviours, beliefs about HIV transmission risk, and attitudes to use of early antiretroviral treatment, in patients with HIV under care within the UK.

A cross-sectional self-administered questionnaire study took place among UK HIV outpatients, in 2011/2012. The study was conducted among those attending clinics in 8 different centres in the UK with the aim of including a representative sample of outpatients attending for care at each centre, irrespective of antiretroviral treatment status.