David.
Radical Centrist
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I've got ten or so tabs bookmarked that address this further.@David. This article should be right up your alley. I'd excerpt it but an having trouble copying the text.
Medical Studies are almost always bogus
How many times have you encountered a study — on, say, weight loss — that trumpeted one fad, only to see another study discrediting it a week later?
That’s because many medical studies are junk. It’s an open secret in the research community, and it even has a name: “the reproducibility crisis.”
For any study to have legitimacy, it must be replicated, yet only half of medical studies celebrated in newspapers hold water under serious follow-up scrutiny — and about two-thirds of the “sexiest” cutting-edge reports, including the discovery of new genes linked to obesity or mental illness, are later “disconfirmed.”
Though erring is a key part of the scientific process, this level of failure slows scientific progress, wastes time and resources and costs taxpayers excesses of $28 billion further. writes NPR science correspondent Richard Harris in his book “Rigor Mortis: How Sloppy Science Creates Worthless Cures, Crushes Hope, and Wastes Billions” (Basic Books).
“When you read something, take it with a grain of salt,” Harris tells The Post. “Even the best science can be misleading, and often what you’re reading is not the best science....”
....So why are so many tests bogus? Harris has some thoughts.
For one, science is hard. Everything from unconscious bias — the way researchers see their data through the rosy lens of their own theses — to the types of beaker they use or the bedding that they keep mice in can cloud results and derail reproducibility.
Then there is the funding issue. During the heyday of the late ’90s and early aughts, research funding increased until Congress decided to hold funding flat for the next decade, creating an atmosphere of intense, some would say unhealthy, competition among research scientists. Now only 17 percent of grants get funded (compared to a third three decades ago). Add this to the truly terrible job market for post-docs — only 21 percent land tenure track jobs — and there is a greater incentive to publish splashy counterintuitive studies, which have a higher likelihood of being wrong, writes Harris.
One effect of this “pressure to publish” situation is intentional data manipulation, where scientists cherry-pick the information that supports a hypothesis while ignoring the data that doesn’t — an all too common problem in academic research, writes Harris.
“There’s a constant scramble for research dollars. Promotions and tenure depend on making splashy discoveries. There are big rewards for being first, even if the work ultimately fails the test of time,” writes Harris.
http://nypost.com/2017/05/06/medical-studies-are-almost-always-bogus/
And to go along with the point I made earlier, it is virtually impossible for those of us on the outside to properly vet such studies. And if you consider that some studies have a deliberate bias in favor of a certain result, and reproduction may only be attempted by those with similar biases, the reliability of any study that may be associated with an agenda is doubtful.
Sure makes understanding the world difficult, doesnt it.