When Evidence Says No, but Doctors Say Yes
propublica.org
propublica.org
> In 2012, Brown had coauthored a paper that examined every randomized clinical trial that compared stent implantation with more conservative forms of treatment, and he found that stents for stable patients prevent zero heart attacks and extend the lives of patients a grand total of not at all. In general, Brown says, “nobody that’s not having a heart attack needs a stent.” [...] Nonetheless, hundreds of thousands of stable patients receive stents annually, and one in 50 will suffer a serious complication or die as a result of the implantation procedure. [emphasis added]
Indeed. The article also discusses a lot of other factors that feed into ineffective treatments. Expectations of patients, poorly done research, the difficulty of combining treatment with statistically valid trials, doctors not keeping up with research, doctors not being particularly willing to follow the results of research they do read, and on and on.