The literatures of non randomized study were excluded, and those of non blinded study were not excluded.

排除非随机研究原著性文献，未排除非盲法研究原著的文献。

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Patients received study medication through week 30 and could continue in a blinded study extension through week 50.

病人接受研究药物治疗30周，并可继续留在盲法扩展研究中直至50周。

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Methods: Single blinded study was conducted in 38 aged ma le with KDS, who were randomly divided into 2 groups treated with WZYZP and placebo respectively for 3 months.

方法：38例男性老年肾虚者采用单盲法，随机分为五子衍宗丸治疗组和安慰剂对照组，服药3个月。

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Of the adverse events reported in this blinded study (where the patient, investigator and company do not know whether the patient received Seroxat or a dummy pill) only one - headache - was attributed by the independent investors to Seroxat.

BBC: GlaxoSmithKline logo

"We did think it was appropriate, as the study was still blinded, to try and get some outside opinions to just validate that the assumptions we made when the study started, " said Spiegel.

FORBES: Vytorin's Missing Fail-Safes

Dr. Hartwell, who wasn't involved in the study, said social-network trials aren't likely to replace conventional randomized, double-blinded, placebo-controlled trials, the gold-standard for generating medical evidence.

WSJ: ALS Study Falls Short, But Use of Social Media Holds Promise