Demographic information of patients from 2005 to 2011.
| Total number of scoliosis surgery with neuromonitoring | Total number of scoliosis surgery | p-value | ||
|---|---|---|---|---|
| Year | p < 0.0001 | |||
| 2005 | 93 | 345 | ||
| 2006 | 123 | 445 | ||
| 2007 | 154 | 512 | ||
| 2008 | 213 | 563 | ||
| 2009 | 258 | 686 | ||
| 2010 | 183 | 386 | ||
| 2011 | 195 | 416 | ||
| Age | p = 0.006 | |||
| < 65 | 255 | 580 | ||
| 65-69 | 372 | 1002 | ||
| 70-74 | 337 | 931 | ||
| 75-79 | 267 | 741 | ||
| 80-84 | 113 | 352 | ||
| >84 | 30 | 88 | ||
| Gender | p = 0.106 | |||
| Female | 935 | 2542 | ||
| Male | 421 | 1062 | ||
| Region | p < 0.0001 | |||
| Midwest | 336 | 919 | ||
| Northeast | 231 | 436 | ||
| South | 640 | 1516 | ||
| West | 341 | 852 | ||
| Total* | 1361 | 3618 | ||
↵* Discrepancies between total value and summation of values in each group are attributed to the transfer of patients between subgroups.