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. 2023 Mar 8;18(3):e0281659. doi: 10.1371/journal.pone.0281659

Fig 4. Country level preprint analysis.

Fig 4

(a) Map of the rate of preprint publication for the top 50 research-producing countries. (b) Preprint publication rate of World Bank country income group classifications. (c) Time gap between preprint posting and paper publication, in days, for income groups. (d) Median abstract similarity between preprint and paper for income groups. Horizontal line shows median of all published preprints. (e) Mean title similarity between preprint and paper for income groups. Horizontal line shows mean of all published preprints. *** p < 0.001, n.s. not significant.