Patient safety may be put at risk by industry-sponsored medical trials that back the sponsor’s drug 97 per cent of the time and are “marketing tools” rather than scientific investigations, scientists have claimed. Researchers have found that head-to-head trials, in which one drug is tested against another for efficacy, are in the main paid for by the drugs companies and “systematically yield favourable results for the sponsors”.

http://www.thetimes.co.uk/tto/health/news/article4474184.ece