Results from a blind and a non-blind randomised trial run in parallel: experience from the Estonian Postmenopausal Hormone Therapy (EPHT) Trial.

BMC Med Res Methodol · 2012 · PMC3341199 · PMID 22475112

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of borderline significanceno p-value reported

However, for coronary heart disease the difference is of borderline significance and confidence intervals for other outcome events are very wide - so we cannot entirely exclude the possibility of a causal effect of blinding.

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