Time arrow in published clinical studies/trials indexed in MEDLINE: a systematic analysis of retrospective vs. prospective study design, from 1960 to 2017
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DOI: 10.7717/peerj.6363
Abstract: Clinical studies/trials are experiments or observations on human subjects considered by the scientific community the most appropriate instrument to answer specific research questions on interventions on health outcomes. The time-line of the observations might be… read more here.
Keywords: studies trials; clinical studies; time; study ... See more keywords