Data availability at four Nature Portfolio journals before and after integration with figshare over 2017-2023

This dataset contains the data availability statements (DAS) from four Nature Portfolio journals from January 2017 to December 2021. This covers two periods; one prior to integrating the figshare repository with the submission system of each journal (January 2017 to December 2021) and one following the integration (April 2022 to July 2023).Each DAS is assigned one or more of seven categories based on its content and any links to available data. This enables analysis of changes in data sharing behaviour, for example either side of the figshare integration.Summary statistics by year and the DAS categories are provided in separate tabs of the worksheet. DAS were initially assigned by basic text-matching (for example the presence of key terms like 'request' in the DAS indicating data are available on request). A human curator then verified each article's categorisation and amended if necessary.