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Fig. 3 | BMC Anesthesiology

Fig. 3

From: Trial registration and selective outcome reporting in 585 clinical trials investigating drugs for prevention of postoperative nausea and vomiting

Fig. 3

Association between registration status and geographic location of all included trials from 2004 to 2017 (n = 334). Relative frequency (%) plotted for registered and non-registered trials (a) and plotted for geographic location (b). Asia (asi), Europe (eu), North America (nam), multi-continental locations (multi), and other

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BMC Anesthesiology

ISSN: 1471-2253

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