Input - Aster Analytics

The CoxSurvFit function has three required input tables

• The first two tables are output by the CoxPH function and are described in the Output section of the function: CoxPH:
  • CoxPH Linear Predictor Table Schema
  • CoxPH Coefficient Table Schema
• Predict table, whose schema is described by the following table:

  CoxSurvFit Predict Table Schema

  Column Name	Data Type	Description
  prediction_variable	Any	Contains the values of the prediction variables. The table must have one column for each prediction variable.
  accumulate_column	Any	Optional column that can contain anything. The table can have more than one such column. If the Accumulate argument specifies this column, the function copies it to the output table; otherwise, the function ignores it.

The following is an example of a predict table.

For the row in the preceding table, the function computes this survival probability:

S(t) = S0(t)(β x1*a + β x2*b + β x3*c + β x4*d)