= Accelerated failure time model
{title2=$\log T_z=\mu(z)+\sigma X,\quad\sigma>0$}
{wiki}
An accelerated failure time model changes the time scale of a common event-time distribution. In a log-location-scale representation, $T_z=e^{\mu(z)}e^{\sigma X}$ with common $X$ and positive scale $\sigma$. An additive change in $\mu(z)$ multiplies all time <quantiles> by the same factor. A larger time multiplier indicates longer survival, whereas a larger <hazard multiplier> in a <proportional hazards model> indicates faster failure.
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