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Statistical Comparisons Between L4/5 IVD Group and L5/S1 IVD Group. Nonpaired Student t Tests Were Performed.
| L4/5 IVD | L5/S1 IVD | P | |
|---|---|---|---|
| Age (years) | 40.9 ± 11.7 | 46.3 ± 13.7 | .38 |
| Normalized AQP1 expression | 15.9 ± 20.6 | 52.2 ± 59.0 | .10 |
| Normalized T2 intensity | 24.3 ± 25.6 | 27.8 ± 21.6 | .76 |
Abbreviations: AQP1, aquaporin-1; IVD, intervertebral disc; MRI, magnetic resonance imaging.
