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Here is a great paper that shows that more than 99% of Chinese clinical trials show a positive result. Either null results are being suppressed or data is being fabricated.

http://www.dcscience.net/Vickers_1998_Controlled-Clinical-Tr...

Good science certainly comes out of China, but a lot bad science comes along too.

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It should be noted that the paper (as I've read in the abstract) extrapolates from MEDICAL data. There's a huge prevalence of pseudomedicine and mysticism which receives incorrect confirmation (as evidenced by the aforementioned paper), but a poor publication record in medicine journals isn't necessarily a good predictor of physics journals.

US journals aren't big on publishing null results either.

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