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Table 2 Ranking of 12 restricted randomization procedures with respect to balance/randomness tradeoff for a trial with nā€‰=ā€‰50 subjects

From: A roadmap to using randomization in clinical trials

Rank Design Imb(n) FI(n) d(n)
1 BSD(3) 0.226 0.316 0.389
2 GBCD(2) 0.220 0.344 0.409
3 GBCD(1) 0.341 0.240 0.417
4 ABCD(2) 0.170 0.419 0.452
5 GBCD(5) 0.121 0.522 0.536
6 BCD(2/3) 0.233 0.487 0.540
7 BCDWIT(2/3, 3) 0.148 0.560 0.579
8 Rand 0.505 0.318 0.597
9 PBD(4) 0.082 0.813 0.818
10 TBD 0.868 0.225 0.896
11 PBD(2) 0.052 1.000 1.001
12 CRD 1.014 0.000 1.014