oa South African Journal of Bioethics and Law - The ethics of claiming a 60% reduction in HIV acquisition from voluntary medical male circumcision : letter



To the Editor: Dr Masukume recommends that we avoid using the relative risk reduction (RRR) statistic in counselling men on the benefits of voluntary medical male circumcision (VMMC). He makes the following important points that epidemiologists frequently emphasise: RRR is a measure of association that is difficult for patients to understand and a different statistic, i.e. number needed to treat (NNT) (or in this case, number needed to prevent HIV infection), is often a preferable statistic to use when counselling patients about any medical intervention.


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