Numbers of various data sharing statements for randomly selected British Medical Journal (BMJ) research articles (2009–2015) that indicated the availability of their raw data
| 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 (1) | 2015 (2) | Total | |
|---|---|---|---|---|---|---|---|---|---|
| Additional data available from author | 1 | 1 | 3 | 4 | 3 | 2 | 5 | 0 | 19 |
| Reasonable requests for access to data can be made to the authors | 0 | 1 | 0 | 2 | 1 | 2 | 7 | 2 | 15 |
| Data were available from external sources subject to additional applications | 0 | 1 | 0 | 1 | 0 | 1 | 3 | 2 | 8 |
| Data publicly available | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 5 |
| Data were available once they had completed all planned analyses and published results | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 2 |
| Data were available after 3 years, subject to a contract and authors will examine requests | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| Total | 1 | 4 | 3 | 8 | 4 | 8 | 15 | 7 | 50 |