Difference between pilots and controls in MRI findings
Finding | Pilots | Controls | Between-group differences | ||||||
| Baseline | Follow-up | P for change within group | Baseline | Follow-up | P for change within group | P for difference in baseline value between groups | P for difference in follow-up value between groups | P for difference in changes between groups | |
| Disc degeneration sum score; median (IQR) | 1.5 (1–3) | 3 (2–5) | <0.001 | 3.0 (1–3.75) | 4 (2–5) | <0.001 | 0.090 | 0.525 | 0.225 |
| Disc herniation | 23 (13) | 45 (25) | 0.061 | 5 (3) | 25 (14) | 0.004 | 0.015 | 0.020 | 0.689 |
| Uncovertebral arthrosis | 26.8 (15) | 33.9 (19) | 0.454 | 23.2 (13) | 17.6 (10) | 0.625 | 0.440 | 0.024 | 0.182 |
| Schmorl’s node | 5.4 (3) | 3.6 (2) | >0.999 | 3.6 (2) | 7.1 (4) | 0.500 | >0.999 | 0.679 | 0.252 |
| Modic change | 0.0 (0) | 3.6 (2) | 0.500 | 1.8 (1) | 3.6 (2) | >0.999 | >0.999 | >0.999 | 0.625 |
| Spinal canal stenosis | 1.8 (1) | 7.1 (4) | 0.250 | 3.6 (2) | 3.6 (2) | >0.999 | >0.999 | 0.679 | 0.243 |
| Kyphosis | 30.4 (17) | 21.4 (12) | 0.267 | 30.4 (17) | 23.2 (13) | 0.289 | >0.999 | >0.999 | 0.826 |
| Scoliosis | 3.6 (2) | 3.6 (2) | >0.999 | 3.6 (2) | 1.8 (1) | >0.999 | >0.999 | >0.999 | >0.999 |
The values are percentages (number of findings per individual) with frequencies (number of findings in group) unless otherwise noted.