An evaluation of constrained randomization for the design and analysis of group‐randomized trials
An evaluation of constrained randomization for the design and analysis of group‐randomized trials
In group-randomized trials, a frequent practical limitation to adopting rigorous research designs is that only a small number of groups may be available, and therefore, simple randomization cannot be relied upon to balance key group-level prognostic factors across the comparison arms. Constrained randomization is an allocation technique proposed for ensuring …