Professor Carl Heneghan discusses statistical significance as part of a special Radio 4 myth-busting series on Inside Health with Dr Mark Porter.
Around 40,000 clinical trials are published each year, but what makes a trial result statistically significant and how can researchers determine whether a result is going to make a real difference to patients in practice – i.e. is it clinically significant?
Professor Carl Heneghan and Glasgow-based GP Dr Margaret McCartney explain.