Last week the UK parliamentary health committee was looking into whether the NHS should continue to fund homeopathy (a ludicrous idea, since homeopathy is useless). Bad Science‘s Ben Goldacre wrote about it:
The man from Boots [the chemist] said he had no evidence that homeopathy pills worked, but he sold them because people wanted to buy them. The man from the pill manufacturers’ association said negative trials about homeopathy were often small, with an average of 65 people, and “all statisticians” agreed you need 500 people for a proper trial. Not only is it untrue that you necessarily need this many people; he then cited, in his favour, a positive homeopathy trial with just 25 patients in it.