Table 1.
Demographics and Implant Characteristics. Continuous Variables Are Presented With Median and Quartiles [Q1–Q3]; Categorical Variables as Number and Percentage.
| Basic characteristic | All implants (N = 955) |
|---|---|
| Age in years at implant | 53 [45–63] range 18–87 |
| Female | 558 (58%) |
| Male | 397 (42%) |
| Indications for SCS | |
| Prior spine surgery (FBSS/FNSS) | 700 (73%) |
| CRPS type I or II | 60 (6%) |
| Peripheral neuropathy | 130 (14%) |
| Neuritis/Radiculitis | 17 (2%) |
| Lumbosacral neuropathy with no prior surgery | 20 (2%) |
| Radiculopathies | 42 (4%) |
| Angina pectoris | 25 (3%) |
| Abdominal, pelvic or cancer pain | 6 (1%) |
| Peripheral vascular disease | 51 (5%) |
| Predominant pain location | |
| Low back and lower extremity | 599 (63%) |
| Low back | 66 (7%) |
| Lower extremity | 185 (19%) |
| Upper extremity | 47 (5%) |
| Thoracic | 33 (3%) |
| Cervical | 42 (4%) |
| Other | 23 (2%) |
| Time from chronic pain diagnosis to implant (years) | 3.8 [1.0–8.4] |
| First (de novo) SCS implant | 715 (75%) |
| Trial performed | 568 of 715 (79%) |
| Days from start of trial to permanent implant | 14 [10–31] |
| One previous SCS pulse generator implant | 156 (16%) |
| More than one previous SCS implant | 84 (9%) |
| Type of SCS system | |
| Conventional nonrechargeable | 462 (48%) |
| Conventional rechargeable | 329 (34%) |
| High‐frequency (10 kHz) rechargeable | 155 (16%) |
| Other or not known | 9 (1%) |
| One percutaneous lead | 615 (64%) |
| Two percutaneous leads | 256 (27%) |
| More than two percutaneous leads | 23 (3%) |
| Paddle lead | 61 (6%) |
| Lead 1 location | |
| Cervical | 82 (9%) |
| Upper thoracic (T1‐T5) | 15 (2%) |
| Mid‐thoracic (T6‐T9) | 622 (67%) |
| Lower thoracic (T10‐T12) | 171 (19%) |
| Lumbar or sacral | 31 (3%) |
Note: Summary statistics are calculated on each implant. An individual subject may have more than one implant. Additionally, there may be more than one indication per implant.