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Table 2 Ranking of 12 restricted randomization procedures with respect to balance/randomness tradeoff for a trial with n = 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