Data Monitoring Plan
The D2d DSMB will regularly review accumulating
safety and efficacy data. A single
formal interim analysis of the accumulating
primary end point data will take place when
70% of the expected events have accrued.
The stopping boundary for the interim analysis
will be based on the Haybittle-Peto
approach (32,33). With this stopping
boundary, the nominal P value representing
statistical significance at the interim
analysis will be 0.001, corresponding to a
Z score of 3.89