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 treatment allocation.
After revision: In light of those considerations, we refer 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 treatment allocation.