Cut and dried (in another sense)

The Guardian reported the other day that circumcision (much more common in the US than in the UK) reduces the risk of contracting AIDS, according to double-blind trials.

Ben Goldacre, who writes a column in the Guardian about the media's reporting of science, amongst other things, takes issue with this report most amusingly:

Dear Editor,

your reporter Alex Renton claims there are double-blind trials to show that circumcision reduces the transmission of HIV. In a double-blind trial, neither the researcher nor the participant know whether they have had the intervention, in this case “circumcision”. However distracted I am by the lack of basic scientific literacy in British news media, I feel certain that if somebody cut the skin at the end of my penis off, I would notice, if not immediately, then at some stage in the years that followed.

Yours

Ben Goldacre
(Bad Science)