TABLE 3.
Pain Intensity Per Group According to SCS Waveform (Complete Case Analysis at 36-Month Follow-up)
| SCS Waveform | TG (N = 30)a | NTG (n = 36) | Total (n = 66)a | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n | Mean | SD | n | Mean | SD | n | Mean | SD | |
| NRS at 36-month follow-up | |||||||||
| Paresthesia stimulation | 11 | 3.45 | 2.98 | 17 | 4.91 | 2.12 | 28 | 4.34 | 2.55 |
| HF stimulation | 9 | 5.11 | 1.36 | 14 | 6.11 | 2.51 | 23 | 5.72 | 2.16 |
| Burst stimulation | 9 | 5.11 | 2.15 | 5 | 5.60 | 2.79 | 14 | 5.29 | 2.30 |
| Change from baseline in NRS at 36 months | |||||||||
| Paresthesia stimulation | 11 | −3.18 | 2.99 | 17 | −2.56 | 2.73 | 28 | −2.80 | 2.80 |
| HF stimulation | 9 | −1.89 | 2.15 | 14 | −1.50 | 2.37 | 23 | −1.87 | 2.18 |
| Burst stimulation | 9 | −2.44 | 1.81 | 5 | −2.30 | 2.59 | 14 | −2.04 | 2.22 |
HF, high-frequency; NRS, numerical rating scale; NTG, no trial group; SCS, spinal cord stimulation; TG, trial group.
a
Programming method missing for 1 patient in the TG group.