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[–] ougNaHadNepVed [S] 1 points -1 points (+0|-1) ago 

Pertinent statement from the article.

The results were so consistent, and so abysmal, that the researchers call it "shocking." They write that "with a high degree of precision, there was no statistically measurable lab benefit. ... None of the mean effects was larger than 2 percent statistically; they were all indistinguishable from zero."