Percent of Disc Herniations Receiving Injection Procedures
| Demographics | SNRB | ESI |
|---|---|---|
| Year | (p = 0.001) | (p = 0.001) |
| 2004 | 5.7% | 8.5% |
| 2005 | 5.4% | 8.0% |
| 2006 | 7.3% | 9.2% |
| Gender | (p = 0.001) | (p = 0.165) |
| Male | 6.4% | 8.6% |
| Female | 6.0% | 8.5% |
| Age | (p = 0.001) | (p = 0.001) |
| <30 | 4.7% | 7.1% |
| 30-40 | 6.0% | 8.3% |
| 40-50 | 6.3% | 8.7% |
| 50-60 | 6.6% | 8.9% |
| >60 | 6.6% | 9.2% |
| Region | (p = 0.001) | (p = 0.0001) |
| Midwest | 6.4% | 10.6% |
| Northeast | 4.4% | 5.6% |
| South | 6.1% | 8.6% |
| West | 8.0% | 7.9% |