From: On estimation for accelerated failure time models with small or rare event survival data
Respiratory disease | Pulmonary embolus | |||||||
---|---|---|---|---|---|---|---|---|
MLE | Firth | MLE | Firth | |||||
Predictors | Estimates | SE | Estimates | SE | Estimates | SE | Estimates | SE |
Treatment | 0.204 | 0.478 | 0.124 | 0.284 | -0.588 | 1.086 | -0.292 | 0.575 |
Age | -1.131 | 0.419 | -0.755 | 0.243 | -1.481 | 0.900 | -0.913 | 0.471 |
WT | -0.535 | 0.351 | -0.307 | 0.202 | 0.218 | 0.821 | 0.070 | 0.445 |
PF | 14.193 | ∞ | -0.259 | 0.750 | 26.677 | ∞ | -0.676 | 1.518 |
HX | 0.001 | 0.488 | − 0.037 | 0.289 | -0.646 | 1.121 | − 0.463 | 0.625 |
HG | 14.733 | 6,113.595 | 0.857 | 0.751 | − 0.672 | 1.284 | − 0.585 | 0.672 |
SZ | 14.605 | ∞ | − 0.309 | 0.731 | − 3.777 | 1.697 | − 2.472 | 0.895 |
SG | 0.083 | 0.463 | 0.025 | 0.076 | -0.503 | 1.077 | − 0.029 | 0.146 |
Intercept | 6.772 | 0.904 | 5.931 | 0.336 | 10.031 | 2.075 | 8.942 | 0.969 |
scale (b) | 0.779 | 0.262 | 0.646 | 0.073 | 1.657 | 3.438 | 1.423 | 0.159 |