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2] Ioannidis previously demonstrated that a sample of randomized phase 2 and 3 trials conducted between 1986 and 1996 required nearly 2.5 years for publication, 5 while our more recent study of National Institutes of Health (NIH)-funded trials found that average time to publication was almost two years. We sought to determine time to publication for a recent and representative sample of trials published in 2009.
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Ross et al. (2013) studied this question.
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