Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
An estimated 8% of scientists who participated in an anonymous survey of research practices at Dutch universities confessed1 to falsifying and/or fabricating data at least once between 2017 and 2020. More than 10% of medical and life-science researchers admitted to committing this type of fraud, the survey found.Results of the survey were posted 6 July on the preprint server MetaArXiv. Between October and December 2020, study authors contacted nearly 64,000 researchers at 22 universities in the Netherlands, 6,813 of whom completed the survey. Other such studies, including one from 2005 that examined rates at which scientists funded by the US National Institutes of Health falsified or ‘cooked’ data, have found lower proportions2. In the NIH study, 0.3% of more than 3,000 respondents admitted to data falsification.