Sigma Research
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Sigma Research is a research group specialising in the social, behavioural and policy aspects of HIV and sexual health. It is part of the Faculty of Public Health and Policy at the London School of Hygiene & Tropical Medicine.

Gay Men's Sex Survey

Gay Men's Sex Survey

Available now in print or PDF, our final report from the Gay Men's Sex Survey 2014. The online survey recruited more than 15,000 gay men and other MSM living in England and demonstrated higher rates of HIV testing than ever before.


SHARP programme

SHARP programme

A mapping and appraisal of HIV prevention and care interventions undertaken for MSM in Kenya, Tanzania, Uganda & Zimbabwe.

PrEP use

PrEP use

Presentation of interim qualitative findings examining motivations and barriers to PrEP use among black gay and bisexual men in London.

ASK evaluation

ASK evaluation

An evaluation of youth-led advocacy for the sexual & reproductive health rights of young people with HIV in Uganda and Kenya.

Human Rights Count!

Human Rights Count!

We supported GNP+ in developing an evidence-gathering tool to enable key populations with HIV to document rights violations.The outcome is better informed advocacy for people with HIV.


Predictors of crystal methamphetamine use in UK gay men and other MSM

Crystal methamphetamine (‘crystal meth’) use by gay men and other men who have sex with men (MSM) is an ongoing public health concern in the UK. This paper uses data from the community-based Gay Men's Sex Survey (n = 16,565) to characterise demographic and socio-sexual risk factors for crystal meth use in a national sample of UK gay men and other MSM recruited online in late 2014. We used logistic regression to consider how use of crystal meth in the last year varies by demographic and sexual risk indicators. In univariate models, crystal meth use was significantly associated with being between the ages of 30 and 49; living in London; having received a positive HIV test result; and with higher education qualifications; and having multiple steady and non-steady condomless anal intercourse partners. This analysis confirms and updates previous findings from the UK and suggests that while crystal meth use remains uncommon it seems to be becoming more concentrated in London.


Partner projects

Making it Count
HAUS Study of HIV self-sampling
KWP in practice