Table 2.
Parameter estimates from final joint model of AAA growth and rupture
| Parameter | Description | Estimate (SE) | p‐value | |
|---|---|---|---|---|
| Longitudinal process | ||||
| β0 | Fixed intercept | 36.5 (0.2) | – | |
| β1 | Fixed linear slope term | 2.05 (0.08) | <0.0001 | |
| β2 | Fixed quadratic slope term (curvature) | 0.097 (0.006) | <0.0001 | |
| Survival process | ||||
|
|
Log baseline hazard | −11.0 (0.9) | – | |
| α1 | Log‐hazard ratio with current diameter | 0.084 (0.021) | 0.0001 | |
| α2 | Log‐hazard ratio with slope | 0.579 (0.193) | 0.0028 | |
| Variance components | ||||
| σ0 | Random intercept between‐subject SD | 6.63 | – | |
| σ1 | Random linear slope term between‐subject SD | 1.79 | – | |
| ρ | Correlation between random intercept and linear slope term | 0.567 | – | |
| σ | Residual error SD | 2.91 | – |