Table 2.

Summary of trial blinding

Group/individual blinded	Information withheld	Method of blinding
Person assigning participants to groups	Not applicable	Not applicable
Participants	Allocated treatment	Placebo control
Care providers	Allocated treatment	Not told of group assignment
Data collectors and managers	Allocated treatment	Not told of group assignment
Outcome assessors	Allocated treatment	Not told of group assignment
Statisticians	Allocated treatment	Not told of group assignment
Data and Safety Monitoring Board	Not applicable	Not applicable