selviämisfunktiota
A selviämisfunktio, or survival function in English, is a fundamental concept in survival analysis. It describes the probability that a subject will survive beyond a specific time point. Mathematically, the survival function is often denoted by S(t), where 't' represents time. It is defined as the probability of an event (such as death, equipment failure, or disease relapse) not occurring by time 't'.
The survival function has several key properties. It is always between 0 and 1, inclusive. S(0) is
Estimating the survival function from observed data is a primary goal in survival analysis. Common methods