Table 3.
Crude and adjusted analyses comparing muscle CSA and PDFF asymmetry between the two groups (absolute difference)
| Variable | LDH (n = 85), median (IQR) | Control (n = 48), median (IQR) |
p Crude |
p Adjusted |
|---|---|---|---|---|
| CSA (cm²) | ||||
| MFL3/4 | 57.6 (23.6–105.3) | 60.5 (27.0–94.4) | 0.938 | 0.615 |
| MFL4/5 | 64.6 (33.9–98.9) | 60.5 (18.4–99.2) | 0.648 | 0.632 |
| ESL3/4 | 126.1 (44.2–238.7) | 121.0 (57.0–179.7) | 0.549 | 0.489 |
| ESL4/5 | 127.4 (48.3–171.8) | 71.3 (29.3–127.4) | 0.009 | 0.081 |
| PML3/4 | 82.6 (30.1–145.3) | 66.6 (31.5–108.3) | 0.488 | 0.467 |
| PML4/5 | 75.5 (27.2–122.9) | 82.9 (38.2–140.2) | 0.593 | 0.953 |
| GM | 290.6 (151.7–599.7) | 267.8 (123.7–424.8) | 0.183 | 0.435 |
| PDFF (%) | ||||
| MFL3/4 | 1.9 (0.8–4.0) | 2.1 (1.1–3.5) | 0.892 | 0.631 |
| MFL4/5 | 2.5 (1.1–3.1) | 2.0 (0.7–3.5) | 0.339 | 0.638 |
| ESL3/4 | 1.1 (0.6–2.1) | 1.0 (0.4–1.5) | 0.080 | 0.495 |
| ESL4/5 | 2.1 (1.3–5.0) | 1.7 (1.0–3.2) | 0.056 | 0.354 |
| PML3/4 | 1.4 (0.6–2.5) | 0.9 (0.3–1.9) | 0.055 | 0.236 |
| PML4/5 | 1.9 (0.9–2.7) | 1.5 (0.7–1.9) | 0.025 | 0.174 |
| GM | 2.1 (9.1–4.7) | 1.5 (0.6–3.0) | 0.029 | 0.128 |
Values were calculated as the absolute difference between the corresponding muscle parameters on the left and right sides
Bold values indicate p < 0.05
CSA cross-sectional area, PDFF proton density fat fraction, LDH lumbar disc herniation, IQR interquartile range, MF multifidus, ES erector spinae, PM psoas major, GM gluteus medius