About the Authors

Ingrid Young

i.young@sphsu.mrc.ac.uk

Affiliation Social and Public Health Sciences Unit, Medical Research Council, Glasgow, United Kingdom

Jessica Li

Affiliation Social and Public Health Sciences Unit, Medical Research Council, Glasgow, United Kingdom

Lisa McDaid

Affiliation Social and Public Health Sciences Unit, Medical Research Council, Glasgow, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Devised the paper, wrote the first draft and conducted the qualitative analyses: IY. Cleaned and prepared the data and conducted the quantitative analyses: JL. Designed the study, supervised, and was the primary investigator of the MRC Gay Men’s Sexual Health Survey, Scotland: LMD. Contributed to subsequent drafts and approved the final version of the manuscript: IY JL LMD.