Cox Regression

Options

Stratify Cox Fit?: Enter Description
Create Interaction Columns?: Enter Description
Column for Interaction Variable: Column to create interaction variable off of.
Select Column To Stratify On (If not stratifying just select a non-base column): Select the variable to consider.
Select Survival Status Column: Enter Description
Select Time Column: Select the column that represents the survival time.
Penalizer (if convergence issues): Convergence halted due to matrix inversion problems: This means that there is high collinearity in your dataset. That is, a column is equal to the linear combination of 1 or more other columns. A common cause of this error is dummying categorical variables but not dropping a column, or some hierarchical structure in your dataset. Try to find the relationship by:%%00010adding a penalizer to the model, ex: CoxPHFitter(penalizer=0.1).fit(…) until the model converges. In the print_summary(), the coefficients that have high collinearity will have large (absolute) magnitude in the coefs column.%%00010using the variance inflation factor (VIF) to find redundant variables.%%00010looking at the correlation matrix of your dataset, or