Before revision: In light of those considerations, we refer to the former as 'allocation concealment' and reserve the term 'blinding' for measures taken to conceal group identity after allocation” Subversion and fraud Traditionally, each patient's treatment allocation data was stored in a sealed envelopes, which was to be opened to to determine group allocation.
After revision: In light of those considerations, we refer to the former as 'allocation concealment' and reserve the term 'blinding' for measures taken to conceal treatment identity after allocation” Subversion and fraud Traditionally, each patient's treatment allocation data was stored in a sealed envelopes, which was to be opened to to determine group allocation.