Hazard Curves

Figure 1. Hazard curve for "average" customer

The basic hazard curve is a visual display of the cumulative model-predicted potential to churn for the "average" customer. The horizontal axis shows the time to event. The vertical axis shows the cumulative hazard, equal to the negative log of the survival probability. Past 55 months, the hazard curve, like the survival curve, becomes less smooth, for the same reason.

Figure 2. Hazard curves by customer category

The plot of the hazard curves for each covariate pattern gives a visual representation of the effect of Customer category. Total service and Basic service customers have higher hazard curves because, as you have learned from their regression coefficients, they have a greater potential to churn.