Table 6.
Statistical power of the model to find statistically significant effects of diabetes for the different outcomes of this study
| Outcome | Adjustment variables | Observed correlation between outcome and age | Observed intracluster correlation a | Power | Minimum # of specimens for at least 80% power b |
|---|---|---|---|---|---|
| Matrix stiffness | Age | 0.70 | — | 0.86 | 11 |
| Fiber stiffness | Age | −0.087 | — | 0.06 | 1034 |
| Fiber alignment | Age and Ppscl quadrant | −0.041 | 0.075 | 0.08 | 410 |
| Mechanical anisotropy | Age and Ppscl quadrant | −0.32 | 0.6 | 0.28 | 44 |
a
For compound symmetry correlation structure.
b
To find significant association given the observed partial correlation.