When calculating the Gini-index of health resource allocation by area, Gini-index were >0.5 from 1998 to 2012, which indicate allocation by area is inequitable for a longtime, and allocation of nurse is especially serious.
The form inside each envelope indicated allocation to group A, B, C, or D. The researchers were unaware of group allocation.
The algorithm gave probabilities from 0.5 (in the case of indifferent allocation to one or another group) to 0.8 (if both minimisation factors indicated allocation to the same group).
A random number sequence for each strata is generated using a random function in SAS version 9.2 and generated a random sequence of A and B's to indicate allocation to intervention or control groups.
Following the recruitment of each woman, an opaque envelope will be selected in sequential order by the attending clinician and the contents will indicate allocation to the intervention group or the control group.
Prior to initiation of the trial, a staff at Harvard School of Public Health (HSPH) not associated with implementation of the trial generated serial numbers from 1 through 400, and randomly assigned these to A and B to indicate allocation to the intervention or placebo groups using SAS version 9.0.
Logistic regression analysis determining dropout (yes/no) including the variables age, sex, educational level, and group-allocation indicated that allocation to the intervention group was significantly associated with higher dropout rates during the study (odds ratio (OR) = 2.2, p = 0.013).
Patients were randomised to hydrotherapy or land exercises using sealed opaque envelopes indicating treatment allocation.
Cards indicating group allocation were placed in opaque sequentially numbered envelopes, randomized in blocks of 10 via a computerized randomization sequence generated in New York by Gynuity Health Projects staff.
Eligible patients were allocated to either haloperidol or dexmedetomidine using numbered envelopes into which a card indicating patient allocation had been placed according to a computer-generated random-number sequence.
