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Author Topic: Understanding relative risk reduction strategies  (Read 1542 times)

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Offline positivelynerd

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  • Life isn't a struggle, it's a wiggle.
Understanding relative risk reduction strategies
« on: July 21, 2013, 04:41:13 PM »
In doing a little casual reading on PrEP effectiveness, I happened upon a very interesting slide show http://www.slideshare.net/JimPickett/project-rsp-training-on-prep-for-hiv-prevention-22798530 that had one graph that really stood out to me: 

Here, it's listed that TaP ranks higher in reduction of transmission than condoms for both hetero- and homo- sexual cohorts.  I admit I haven't looked at the references cited, but I found this to be a really mind-boggling flip in statistics.  I know that the 96% figure is for heterosexual couples in monogamous relationships with no concurrent STIs, but I was under the impression that condoms were 99% (maybe not 99%, but definitely higher than 70-80%) effective when used properly.  If anyone would care to shed light on this subject in the context of this graphic, this curious little critter would definitely appreciate it.   :)

(Edit)  I found a footnote referencing the discrepancy between my understanding and the graphic:

Condom Efficacy By Consistency of Use Among Men Who Have Sex with Men (MSM) in the US Condoms offer substantial but partial protection against HIV infection1Reported sexual behavior and condom usein 6-month intervalReceptive or Insertive Anal IntercourseEfficacyAlways use vs. Never use 69.7 %Sometime vs. Never use 4.4 %1. Smith DK, et al. CROI 2013; Atlanta, GA. Oral #322. Weller S, et al. Cochrane Database Syst Rev 2002:CD003255Analyzed efficacy of condoms in reducing HIV transmission inHIV-uninfected MSM who had anal sex with at least 1 HIV-infected partner from 2 USstudies (N=3490): VaxGen 004 and Project Explore1 
« Last Edit: July 21, 2013, 04:51:45 PM by positivelynerd »
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