f. How do we collect this information and what do we do with it?

Once a year, the participating NHS HIV clinics transfer the data required for the study to the study team; all these transfers are within the UK. Data are sent in an electronic format and by secure transfer methods.

The data from each HIV clinic are checked, cleaned and merged. Each year an anonymised dataset is produced for collaborators to use for research analyses.

Proposals for research analyses come from the UK CHIC study group and from collaborations with other HIV observational cohort studies and projects. The results are presented at conferences and are written up for peer-reviewed publications and other study outputs. We also feedback results to the HIV community, via a representative on the steering committee.