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Fig. 2 | BMC Anesthesiology

Fig. 2

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

Fig. 2

Association between registration status and risk of bias (a, b), or funding source (c, d) of included trials. Relative frequency (%) of all published trials (a and c, n = 334) and of all registered trials (b and d, n = 75) from 2004 to 2017. Risk of bias assessment according to “low”, “unclear”, and “high”. Funding source according to industry, non-industry (non-ind), and not determined (ND)

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BMC Anesthesiology

ISSN: 1471-2253

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