| Female |  | Male |  | ||
---|---|---|---|---|---|---|
HF-SCS | LF-SCS | p-val | HF-SCS | LF-SCS | p-val | |
n | 40 | 73 | Â | 54 | 70 | Â |
Age (mean (SD)) | 65.03 (12.60) | 53.70 (14.98) | < 0.001 | 58.06 (15.17) | 54.46 (15.21) | 0.193 |
Ethnicity (%) | Â | Â | 0.62 | Â | Â | 0.031 |
 African American | 0 (0.0) | 1 (1.4) |  | 0 (0.0) | 1 (1.4) |  |
 Caucasian | 2 (5.0) | 5 (6.8) |  | 1 (1.9) | 12 (17.1) |  |
 Hispanic | 1 (2.5) | 1 (1.4) |  | 8 (14.8) | 4 (5.7) |  |
 Non-Hispanic | 37 (92.5) | 63 (86.3) |  | 42 (77.8) | 48 (68.6) |  |
 Unknown (Patient cannot or refuses to declare ethnicity) | 0 (0.0) | 3 (4.1) |  | 3 (5.6) | 5 (7.1) |  |
Marriage Status (%) | Â | Â | 0.73 | Â | Â | 0.79 |
 Married | 24 (60.0) | 42 (57.5) |  | 36 (66.7) | 47 (67.1) |  |
 Other/Unknown | 0 (0.0) | 0 (0.0) |  | 1 (1.9) | 2 (2.9) |  |
 Separated/Divorced | 8 (20.0) | 14 (19.2) |  | 5 (9.3) | 5 (7.1) |  |
 Single | 5 (12.5) | 14 (19.2) |  | 11 (20.4) | 16 (22.9) |  |
 Widowed | 3 (7.5) | 3 (4.1) |  | 1 (1.9) | 0 (0.0) |  |
Insurance Type (%) | Â | Â | 0.07 | Â | Â | 0.018 |
 Medicare | 15 (37.5) | 12 (16.4) |  | 15 (27.8) | 11 (15.7) |  |
 None/Unknown | 19 (47.5) | 39 (53.4) |  | 30 (55.6) | 45 (64.3) |  |
 Other Government | 1 (2.5) | 1 (1.4) |  | 7 (13.0) | 2 (2.9) |  |
 Private Insurance | 5 (12.5) | 18 (24.7) |  | 2 (3.7) | 10 (14.3) |  |
 Workman’s Compensation | 0 (0.0) | 3 (4.1) |  | 0 (0.0) | 2 (2.9) |  |
Primary Diagnosis for Implant (%) | Â | Â | 0.25 | Â | Â | 0.006 |
 Complex Regional Pain Syndrome | 4 (10.0) | 13 (17.8) |  | 3 (5.6) | 10 (14.3) |  |
 Cranial Neuropathy | 1 (2.5) | 2 (2.7) |  | 1 (1.9) | 3 (4.3) |  |
 Failed Back Surgery Syndrome | 18 (45.0) | 32 (43.8) |  | 19 (35.2) | 32 (45.7) |  |
 Lumbar Radiculopathy | 8 (20.0) | 15 (20.5) |  | 12 (22.2) | 15 (21.4) |  |
 Non-Surgical Refractory Back Pain | 5 (12.5) | 1 (1.4) |  | 9 (16.7) | 1 (1.4) |  |
 Neuropathic Pain | 3 (7.5) | 9 (12.3) |  | 4 (7.4) | 8 (11.4) |  |
 Other Chronic Pain | 1 (2.5) | 1 (1.4) |  | 6 (11.1) | 1 (1.4) |  |
Revision or Explant (%) | 6 (15.0) | 17 (23.3) | 0.42 | 9 (16.7) | 8 (11.4) | 0.564 |
Patient Status (%) | Â | Â | 0.036 | Â | Â | 0.198 |
 Alive | 33 (82.5) | 64 (87.7) |  | 45 (83.3) | 56 (80.0) |  |
 Deceased | 0 (0.0) | 5 (6.8) |  | 0 (0.0) | 4 (5.7) |  |
 Unknown | 7 (17.5) | 4 (5.5) |  | 9 (16.7) | 10 (14.3) |  |