Table 1:

Treatment allocated and treatment received

Randomized Treatment
HydrogelBare Platinum
No. of patients randomized249250
Received coil as allocated23694.824698.4
Crossed over*73.220.8
Procedure started but no coil inserted20.810.4
Procedure not started31.210.4
Consent revoked10.40
  • * “Crossed over” in HydroCoil arm means that the patient was allocated HydroCoil but only bare platinum coils were deployed. In the control arm, it means that the patient was allocated bare platinum but some HydroCoil was deployed.