Regression P values and 95% confidence intervals for the relationship between shear wave velocity and load for levels L2-L3 and L4-L5.
| Level | Samples, N | Slope, m/N·s | Slope P Value | Slope 95% CI, m/N·s | R 2 |
| L2-L3 | 5 | 0.0259 | 3.96E−21 | 0.0212–0.0306 | 0.4249 |
| L4-L5 | 5 | 0.0201 | 2.47E−28 | 0.0172–0.0231 | 0.4953 |