Exact(3)
Allocation was sealed in opaque, serially numbered envelopes.
Allocation was sealed in opaque and consecutively numbered envelopes held centrally.
Allocation was sealed in opaque, serially numbered envelopes and to eliminate any possibility of bias, randomization was controlled centrally from the university research office and stratified by client status (existing client or new referral).
Similar(57)
Allocations were sealed in opaque and consecutively numbered envelopes kept in a central locked location.
The allocation scheme was sealed in opaque and consecutively numbered envelopes.
Allocation information was sealed in sequentially numbered opaque envelopes prepared by the clinical research organization managing the trial.
The allocation assignment was sealed in sequentially numbered, opaque envelopes by an individual not otherwise involved in the conduct of the trial.
The medication was sealed in sequentially numbered identical packets according to the allocation sequence.
Allocation will be sealed in opaque and consecutively numbered envelopes held in a central location.
The allocation sequence is sealed in numbered and opaque envelopes to ensure that the sequence is concealed.
The allocation codes were sealed in opaque envelopes by a third person not involved in the study to avoid selection bias.
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