Figure 1.

Bar chart depicting increase in number of journal publications (articles or conference abstracts) including terms referring to pooling raw data, as found by a keyword search between dates 2003-2012 (Nā€‰=ā€‰544). [Database: OvidSP titles listed 2003-2012].

Allen et al. BMC Medical Research Methodology 2013 13:122   doi:10.1186/1471-2288-13-122
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