Correction to: Spinal Cord advance online publication 20 September 2016; doi:10.1038/sc.2016.45

Since the publication of this article, the authors have noticed that several revisions to the abstract and tables were missing. The PDF and online versions have been amended.

The publisher apologises for any inconvenience caused.

Table 1 Participant demographic information
Table 2 Means and s.d.’s. for the health and participation measures