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Percent of Back Pain Patients Receiving Magnetic Resonance Imaging or Other “High-Tech” Imaging by County Population Among Complementary and Alternative Medicine (CAM) Users and Nonusers
| County population | CAM nonusers | CAM users | Total |
|---|---|---|---|
| <100k | 18% | 9% | 11% |
| 100–400k | 21 | 10 | 13 |
| >400k | 19 | 12 | 15 |
| Total | 19 | 11 | 14 |
