Variable | Baseline sample (n = 205) | Follow-up sample (n = 170) | p-value of t-test or chi-square comparing the 2 samples |
---|---|---|---|
Age (M, sd) | 50.8(12.1) | 51.1(12.2) | P = 0.85 |
Gender (%) | 51.2% female (105) | 51.8% female (88) | P = 0.92 |
Time since surgery (sd) | 1326.5 days (253.4) | 1308.1 days (257.1) | P = 0.49 |
Procedure (cervical or lumbar) | --------- | 87.1% lumbar (148) | ---------- |
Diagnosis | Â | Â | Â |
% Stenosis (N) | 37.2%(67) | 38.9% (58) | P = 0.75 |
% Degenerative Disc Disease (N) | 43.3% (78) | 39.6% (59) | P = 0.49 |
Smoking status | 24.9% yes (49) | 22.8% yes (37) | P = 0.65 |
Workers compensation status | 19.6% yes (40) | 17.8% yes (30) | p = 0.65 |
Pre-op Scores | Â | Â | Â |
Endorsing chronic pain syndrome (N) | 12.9% yes (26) | 11.5% yes (19) | P = 0.67 |
Endorsing regular severe pain from medical condition (N) | 20.2% yes (41) | 19.1% yes (32) | P = 0.78 |
Pain tolerance (M, sd) | 6.7(2.1) | 6.8(2.0) | P = 0.98 |
Post-op scores | Â | Â | Â |
ICBG Complications score (sum of yes/no) | ----------- | 1.2(2.1) | ---------- |
VAS for pain at graft site | ----------- | 13.1 (21.9) (0–96) | ---------- |
VAS for pain at primary surgical site | ----------- | 25.7(27.5) (0–91) | ---------- |
VAS for pain in extremities | ----------- | 23.2(27.5) (0–99) | ---------- |
SF-36 Physical Component Score | ----------- | 40.7(11.5) | ---------- |
SF-36 Mental Component Score | ----------- | 47.2(13.8) | ---------- |
Oswestry Disability Index | ----------- | 28.6 (22.4) | ---------- |