Are reports of randomized controlled trials improving over time? A systematic review of 284 articles published in high-impact general and specialized medical journals.

PLoS One · 2013 · PMC3877340 · PMID 24391973

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an increasing trendno p-value reported

[10] , [11] Although an increasing trend of high-quality trials was observed over time, this increase appears to be leveling off with time, as there was only a 3% increase in the proportion of high-quality reports published between 2005 and 2010.

also in 63,971 other papers

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