I'm a slightly skeptical of the methodology. Even though there were 3800 couples in the study, only 200 women were using injectable contraceptives (Depo-Provera, or some generic version of it). Of these 200 couples, 10 H.I.V contractions occurred among couples using injectables, while 3 occurred among couples using oral contraceptives. That is a very small sample. Additionally, almost half the women using injectables were also using oral contraceptives over the course of the study and this non-compliance was not accounted for. Although compliance was never the objective, given that this was not a randomized controlled trial.
These are a few points of criticism, but regardless, this study leaves many alarming and urgent questions unanswered. And even if the methodology is skeptical, this article and its spread will itself be detrimental by scarring people away from contraceptives of all forms.
Authors comments on the study.
Input credit: AD, DG, BA