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Simulated power for detecting a between- group difference using conditional logistic regression with stratification based on propensity scores (sample size per group = 1000, significance level: 0.05, distributions of the propensity score (PS): beta(4,2) in group 1 and beta(7,1) in group 2, binomial proportions for success: 0.1 + shift + PS/2 in group 1 and 0.1 + PS/2 in group 2)
