Table 2 Background Data of Study Participants
Total (n = 50–46) | CIFC | CP | Group differences | |
|---|---|---|---|---|
Type of surgery | 27 (54) | 23 (46) | ||
Gender n (%) | .393 | |||
Women | 28 (56) | 17 (63) | 11 (48) | |
Men | 22 (44) | 10 (37) | 12 (52) | |
Age, mean years (SD) | 69 (8.4) | 70 (8.5) | 68 (8.3) | .382 |
Time since surgery, mean years (SD) | 22.4 (0.9) | 22.4 (0.9) | 22.5 (0.9) | .651 |
No. of levels n (%) | .077 | |||
1 | 32 (64) | 14 (52) | 18 (78) | |
2 | 16 (32) | 12 (44) | 4 (17) | |
3 | 2 (4) | 1 (4) | 1 (5) | |
Additional# surgeries n (%) | .604 | |||
No | 39 (81) | 20 (77) | 19 (86) | |
Yes | 7 (15) | 4 (15) | 3 (14) | |
Yes, more than once | 2 (4) | 2 (8) | 0 (0) | |
Fusion status at 1 year n (%) | .010* | |||
Fusion | 33 (70) | 14 (54) | 19 (90) | |
Non-fusion | 14 (28) | 12 (46) | 2 (10) | |
Baseline pain, mm VAS N = 49 (mean (SD)) | 69 (19.1) | 69 (15.9) | 70 (22.4) | .847 |
Baseline disability, NDI% N = 49 (mean (SD)) | 34 (8.6) | 33 (9.0) | 36 (8.0) | .258 |