Survival, Cox Regression, Kaplan Meier, Weibull Distribution, Accelerated Failure Time.
an indicator for a time-varying covariate. Culling can happen once, but calving can happen multiple times. Hence, the ‘event’ is either culling or next calving (event). Two types of events now, which are at opposite sides. The old way of modeling — using event and parity but not taking into account