Sex in zero online
The PARTNER study is important in that it included both gay and straight couples, that it measured risk in people who were not using condoms and that it estimated absolute risks.
Baseline demographics were reported – as with all results – by categories of HIV status, gender and sexuality, with some differences between groups.
Approximately 23% of couples were in new/recent relationships (350 cells/mm3 (85% to 91%).
Based on data from the negative partners, overall, couples reported having sex without condoms just less than once a week: a median of 37 times a year (IQR 15 to 71).
The PARTNER study provides more than three times the amount of follow-up time from people not using condoms than all the previous studies combined.
This includes 500 couple-years of follow up from people having anal sex without condoms.