Table 2.
Numeric Rating Scale Results
|
Baseline n = 33b |
1 Month n = 32b |
3 Months n = 31b |
6 Months n = 32b |
12 Months n = 30b |
18 Months n = 25 |
24 Months n = 18 |
|
|---|---|---|---|---|---|---|---|
| Numeric rating scalea | |||||||
| Mean ± SD | 6.6 ± 1.6 | 2.6 ± 2.0 | 2.5 ± 2.2 | 2.2 ± 2.3 | 3.0 ± 2.5 | 3.1 ± 2.7 | 3.6 ± 2.8 |
| 95% CI | 6.1 to 7.2 | 1.9 to 3.3 | 1.7 to 3.3 | 1.3 to 3.0 | 2.0 to 3.9 | 2.0 to 4.2 | 2.2 to 4.9 |
| Change from baseline (%)a | |||||||
| Mean ± SD | — | 60.8 ± 26.3 | 62.9 ± 32.9 | 65.9 ± 31.9 | 52.4 ± 39.0 | 50.6 ± 40.2 | 50.4 ± 41.0 |
| 95% CI | — | 51.3 to 70.3 | 50.8 to 75.0 | 54.4 to 77.4 | 37.9 to 67.0 | 34.0 to 67.2 | 30.0 to 70.8 |
| At least 50% improvement in pain | |||||||
| n | — | 23 | 22 | 26 | 16 | 12 | 11 |
a
Data are presented as mean and standard deviation (SD) along with 95% confidence interval (CI).
b
Data from the original study were included from baseline to 12 months for subjects enrolled in this extension study.