Skip to main content
. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: J Acquir Immune Defic Syndr. 2018 Apr 1;77(4):358–364. doi: 10.1097/QAI.0000000000001604

Table 4.

Effects of PrEP Use on Condomless Anal Sex in Cohort HIV-Negative Serodiscordant Partnerships

Outcome Predictor IRR Confidence Interval (95%) p-value
Insertive sex Participant on PrEP 1.25 0.62 – 2.53 0.538
Insertive CAS Participant on PrEP 1.79 0.62 – 5.19 0.281
Receptive sex Participant on PrEP 2.66 1.12 – 6.3 0.026
Receptive CAS Participant on PrEP 5.6 1.86 – 16.86 0.002
Total anal sex Participant on PrEP 1.66 0.94 – 2.94 0.082
Total CAS Participant on PrEP 2.97 1.22 – 7.24 0.017

NOTE: Cohort HIV-negative serodiscordant refers to partnerships in which the participant is HIV-negative and the partner is known HIV-positive. PrEP = pre-exposure prophylaxis; IRR = incidence-rate ratio; CAS = condomless anal sex.