Wang B (2026). sandwichrand: Allocation Sequences by Sandwich Mixed Randomization. R package version 1.0.0, https://github.com/wangbshun/sandwichrand.

Wang B, Wang X, Ni C, Xie J, Wu S, Wu Y, Shen Y, Dong Z, Lv W, He Y (2026). “Reducing selection bias risk to enhance RCT validity: sandwich mixed randomization outperforms permuted block design.” BMC Medical Research Methodology, 26(1), 152. doi:10.1186/s12874-026-02877-2.

Corresponding BibTeX entries:

  @Manual{,
    title = {sandwichrand: Allocation Sequences by Sandwich Mixed
      Randomization},
    author = {Bingshun Wang},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://github.com/wangbshun/sandwichrand},
  }

  @Article{,
    title = {Reducing selection bias risk to enhance RCT validity:
      sandwich mixed randomization outperforms permuted block design},
    author = {Bingshun Wang and Xiaojin Wang and Changyu Ni and
      Jinliang Xie and Siqi Wu and Yejun Wu and Yingmin Shen and
      Zhongxun Dong and Wenwen Lv and Yunting He},
    journal = {BMC Medical Research Methodology},
    year = {2026},
    volume = {26},
    number = {1},
    pages = {152},
    doi = {10.1186/s12874-026-02877-2},
  }