Table 2.
Summary of the most explanatory multiple regression models (as determined by R2adj) of creep measurements and for each DTS scanning configuration, in the presence of a significant BMD effect (n=19 for creep displacements, n=22 for τcr and n, and n=21 for C). Each cell shows R2adj followed by the predictor(s) in the model (in the order of parameter name, standardized beta coefficient, and p-value in each row). For those models with multiple variables, p-values are shown for tests of normality (pN) and heteroscedasticity (pH). If no BMD variables were significantly correlated with a given creep variable, the inclusion of DTS variables was not pursued further (N/A).
| Coronal | Lateral | |||
|---|---|---|---|---|
| Axial | Transverse | Axial | Transverse | |
| Creep (Dcr) | N/A | N/A | N/A | N/A |
| D cr-norm | N/A | N/A | N/A | N/A |
| Recovery (Rcr) | N/A | N/A | N/A | N/A |
| R cr-norm | N/A | N/A | N/A | N/A |
| Residual (Dr) | N/A | N/A | N/A | N/A |
| Time Constant (τcr) | N/A | N/A | N/A | N/A |
| Stretch exponent (n) | R2adj = 0.42 BMDAP (−0.59) <0.003 Sλ (−0.37) <0.04 pN > 0.89 pK>0.89 |
R2adj = 0.45 BMDAP(−0.62) <0.002 MIL (−0.40) <0.03 pN > 0.09 pH > 0.18 |
R2adj = 0.46 BMDAP (−0.55) <0.003 Sλ (−0.41) <0.02 pN > 0.25 pH > 0.39 |
R2adj = 0.51 BMDAP (−0.62) <0.0007 Sλ (−0.47) <0.007 pN > 0.76 pH > 0.38 |
| Creep rate (C | R2adj = 0.61 iBMD (−0.71) 0.0001 ALFD (+0.50) <0.003 pN > 0.66 pH > 0.32 |
R2adj = 0.38 iBMD (−0.64) <0.002 |
R2adj = 0.38 iBMD (−0.64) <0.002 |
R2adj = 0.38 iBMD (−0.64) <0.002 |