Mild (n = 35) | Moderate (n = 38) | Severe (n = 29) | P value | |||
---|---|---|---|---|---|---|
I vs II | I vs III | II vs III | ||||
Mean of signal intensity | ||||||
L1-L2 | 204.7 ± 60.9 | 276.5 ± 205.6 | 538.2 ± 280.5 | 0.631 | < 0.001* | 0.004* |
L2-L3 | 228.0 ± 75.7 | 299.7 ± 215.3 | 547.9 ± 289.9 | 0.657 | < 0.001* | 0.010* |
L3-L4 | 233.8 ± 75.1 | 297.4 ± 238.0 | 499.1 ± 234.8 | 0.681 | 0.003* | 0.028* |
L4-L5 | 228.9 ± 77.6 | 303.9 ± 213.9 | 521.9 ± 233.6 | 0.556 | < 0.001* | 0.011* |
Mean L1-L5 | 223.8 ± 67.6 | 294.4 ± 214.7 | 533.4 ± 237.5 | 0.609 | 0.002* | 0.008* |
SD of signal intensity | ||||||
L1-L2 | 109.1 ± 31.1 | 168.9 ± 115.9 | 311.5 ± 158.1 | 0.369 | < 0.001* | 0.014* |
L2-L3 | 130.4 ± 45.5 | 181.8 ± 121.9 | 316.8 ± 157.2 | 0.495 | 0.002* | 0.018* |
L3-L4 | 147.2 ± 50.5 | 185.5 ± 139.8 | 315.5 ± 138.7 | 0.673 | < 0.001* | 0.012* |
L4-L5 | 141.0 ± 43.5 | 183.3 ± 127.6 | 306.3 ± 133.7 | 0.576 | < 0.001* | 0.014* |
Mean L1-L5 | 131.9 ± 41.3 | 179.9 ± 124.8 | 312.5 ± 142.4 | 0.581 | 0.003* | 0.028* |
Percentage of fat infiltration (%) | ||||||
L1-L2 | 21.54 ± 15.4 | 19.3 ± 10.0 | 31.0 ± 7.1 | 0.913 | 0.041* | 0.027* |
L2-L3 | 21.0 ± 12.8 | 21.9 ± 12.2 | 31.6 ± 6.5 | 0.972 | 0.038* | 0.043* |
L3-L4 | 25.0 ± 12.0 | 21.9 ± 13.5 | 37.1 ± 8.2 | 0.765 | 0.022* | 0.003* |
L4-L5 | 24.5 ± 12.1 | 23.3 ± 11.3 | 41.3 ± 7.2 | 0.851 | 0.003* | 0.002* |
Mean L1-L5 | 22.9 ± 11.9 | 21.6 ± 10.6 | 35.2 ± 5.4 | 0.873 | 0.005* | 0.002* |
Relative cross-sectional area | ||||||
L1-L2 | 1.04 ± 0.17 | 0.95 ± 0.22 | 0.84 ± 0.30 | 0.570 | 0.337 | 0.440 |
L2-L3 | 0.99 ± 0.19 | 0.92 ± 0.19 | 0.80 ± 0.27 | 0.640 | 0.293 | 0.315 |
L3-L4 | 0.93 ± 0.24 | 0.83 ± 0.17 | 0.85 ± 0.26 | 0.454 | 0.472 | 0.955 |
L4-L5 | 0.97 ± 0.26 | 0.77 ± 0.24 | 0.78 ± 0.15 | 0.370 | 0.381 | 0.932 |
Mean L1-L5 | 0.98 ± 0.16 | 0.87 ± 0.15 | 0.81 ± 0.23 | 0.454 | 0.363 | 0.560 |