Table 2 Demographic and clinical features of the responder and poor responder groups
| Â | Responders | Poor responders |
|---|---|---|
Number | 16 | 13 |
Age, years | 45.3 ± 9.1 | 39.5 ± 12.6 |
Duration of illness, years | 3.0 ± 1.9 | 3.2 ± 2.4 |
Tender points, 0 to 18 | 13.9 ± 2.0 | 15.4 ± 2.8 |
VAS at baseline, 0 to 100 | 81.3 ± 9.6 | 86.9 ± 11.8 |
VAS after gabapentin, 0 to 100 | 15.6 ± 7.3 | 83.1 ± 16.0 |
Dose of gabapentin, milligrams | 2,156.3 ± 427.4 | 2,215.4 ± 450.6 |