Interim monitoring of efficacy data is important and appropriate.
Sydes
Matthew R
MR
MRC Clinical Trials Unit, Cancer Group, 222 Euston Road, London NWI 2DA, UK. matthew.sydes@ctu.mrc.ac.uk
Parmar
Mahesh K B
MK
D026661:Clinical Trials Data Monitoring Committees; D006801:Humans; D016032:Randomized Controlled Trials as Topic; D016896:Treatment Outcome