Fig. 1From: Propensity score to detect baseline imbalance in cluster randomized trials: the role of the c-statisticPercentage of imbalance detection π as a function of the number of baseline covariates r, the sample size per arm n, the standardized difference (SD) for unbalanced covariates and the percentage of unbalanced covariates 100×s/r. Results were pooled over the number of clusters per arm k. Five thousand simulations were performed per scenarioBack to article page