SIMULATION METHODS
A simulation study was conducted to investigate the impact of stratification errors on the analysis of trials that use stratified randomisation. Continuous outcomes for the For each scenario, 10 000 simulated datasets were generated and analysed using Stata 16.1 (StataCorp, College Station, Texas, USA). Simulation results were summarised using the simsum commandSummary of simulation parameters included in each simulation setting.When the covariate prevalence was 0.75, the error rate was three times higher in the more common stratum.