Table 1.
Demographics and characteristics of patients (N = 39)
| Sex (no.) | |
| Male | 28 |
| Female | 11 |
| Age (yr) | |
| Mean | 50 |
| Standard deviation | 11 |
| Education Level (no.) | |
| Some High School | 2 |
| High School Graduate | 9 |
| Some College | 18 |
| College Graduate | 10 |
| Race (no.) | |
| Caucasian | 28 |
| African-American | 5 |
| Hispanic | 3 |
| Asian American | 2 |
| American Indian | 1 |
| Other | 0 |
| Cause of pain (no.) | |
| Spinal Cord Injury | 9 |
| Complex Regional Pain Syndrome Type I | 6 |
| Causalgia (CRPS Type II) | 2 |
| Diabetic Neuropathy | 6 |
| Multiple Sclerosis | 3 |
| Post-herpetic Neuralgia | 3 |
| Idiopathic Peripheral Neuropathy | 3 |
| Brachial Plexopathy | 3 |
| Lumbosacral Radiculopathy | 3 |
| Post-Stroke Neuropathy | 1 |
| Mean ± SD Baseline VAS (0–100 mm) | |
| Pain Intensity | |
| Placebo | 57.5 ± 22.8 |
| 1.29% | 53.4 ± 23.4 |
| 3.53% | 57.3 ± 24.1 |
| Duration of pain | |
| Median | 9 years |
| Range | 0.5–43.4 years |
| Concomitant medications (no.) | |
| Opioids | 20 |
| Anticonvulsants | 20 |
| Antidepressants | 8 |
| NSAIDs | 4 |