Continuous Marker Prognostic Power

This program uses simulation to approximate the power of a test of a marker association with survival data assuming an exponential regression model.

User Input
Program Output

Input values in yellow boxes and click button to calculate power:

Number of Simulations
Total Sample Size
Alpha Level
Accrual Period
Follow-up Period
Hazard Rate (marker value = 0)
Effect Size (Hazard Ratio per Unit)


Marker Distribution

Log-Normal Distribution Parameter

Estimated Effect and Simulated 1-Alpha CI
Expected Number of Events in Entire Study