In simulations with linear continuous outcomes, MAIC matching only the first covariate moment remained unbiased under moderate positivity violations, while full-IPD propensity score weighting did not.
Park, Jeroen P
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Assessing the Impact of Covariate Distribution and Positivity Violation on Weighting-Based Indirect Comparisons: a Simulation Study
In simulations with linear continuous outcomes, MAIC matching only the first covariate moment remained unbiased under moderate positivity violations, while full-IPD propensity score weighting did not.