|The preoperative NCOS by claudication distance among the study sample (known groups comparison)|
|Claudication distance as measured by the SPWT||Mean NCOS score*||SD|
|Poor (less than 100 meter)||19.9||9.9|
|Fair (between 100 and 800 meter)||24.8||12.4|
|Good (between 800 and 1600 meter)||28.9||13.7|
|Very Good (more than 1600 meter)||33.9||14.8|
* Higher scores indicate better conditions.
** Derived from one-way analysis of variance (the Bonferroni correction was used as post-hoc analysis).
Azimi et al. BMC Neurology 2012 12:101 doi:10.1186/1471-2377-12-101