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Block Randomization

Block randomization is robust to long runs. Block randomization suffers from one problem: it can become possible to determine the next group assignment if the block length is short.

Note: In order to keep balance, the block length should be divisible by the number of groups.

List Generation Parameters

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References

  • M. Lachin, John, P. Matts, John & Wei, L.J. (1989), "Randomization in clinical trials: Conclusions and recommendations," Controlled clinical trials, 9, 365-74.
  • Suresh K. (2011), "An overview of randomization techniques: An unbiased assessment of outcome in clinical research," Journal of Human Reproductive Sciences, 4(1), 8-11.
  • Vickers AJ. (2006), "How to randomize," Journal of the Society for Integrative Oncology, 4(4), 194-198.