Topic: Testing and Design

Simulation-Based Sample-Size Planning

Reporting Gray-Test Design and Results

Power for Delayed or Time-Varying Differences

Multiplicity Across Causes and Groups

Loss to Follow-Up in Sample-Size Planning

Interpreting a Gray-Test Result

Gray’s Test Versus Log-Rank Testing

Gray’s Test With Multiple Groups

Diagnosing Group Differences in Follow-Up

Deriving Gray’s Score Statistic