Supplementary Materials

Authors are encouraged to submit supplementary materials that will accompany the main article. The supplementary materials can provide further detail on the ideas developed in the paper, data sets and code for implementing methods and running simulations. The materials can thus enable readers to apply the paper’s proposed methods to their own data and to replicate much of the analysis and simulations described in the paper without having to code the methods from scratch. Supplementary material may include files with computer code, datasets, detailed proofs of theorems, lengthy tables, extended appendices and other files that illuminate the paper’s contributions.

These supplementary files should be supplied for review along with the manuscript at initial submission. Should the paper be accepted for publication, these materials will be published online. Instructions on how to reference supplemental materials appear below.

Please ensure that supplemtenary files are submitted as separate, standalone files from the main article file.

Instructions for Supplementary Materials for Papers

Please follow these instructions to include your supplemental materials for possible publication along with your paper.

  • Add a note in your abstract stating that supplementary materials for your article are available online. Your note may specifically mention computer code, R-packages, datasets, and/or appendices, or may simply mention “supplemental materials,” which ever you think is appropriate.
  • If appropriate the supplementary materials should be referenced in the body of your article.
  • Add a section to your paper titled “Supplementary Materials.” This section should appear at the end of your paper immediately before your reference list and should include a title and brief description of each supplemental item. In LaTeX please use the description environment to list your supplementary materials. For example:


item[Title:] Brief description. (file type)

item[R-package for MYNEW routine:] R-package “MYNEW” containing code to perform the diagnostic methods described in the article. The package also contains all data sets used as examples in the article. (GNU zipped tar file)


Please note: Each item should correspond to one file. Authors with more than four supplementary files should collect them in a .zip (or similar) archive file. The .zip file should include a detailed readme file that describes the contents and instructs the reader on their use.

Authors who do not use LaTeX should provide a similar list in their Supplementary Materials section.

  • Provide a note to the production editor that describes your supplementary materials, including a list of the titles of each supplemental item and its file name.

If you have multiple supplementary files it is appropriate to provide an archive (either .tar or .zip) that contains all of the files. In this case please alert readers in your “Supplementary Materials” section to the fact that all of your supplemental files are contained in a single archive (and can be obtained via a single download). Also alert the production editor in your note.