IPW involves three main steps: 1. Modeling the Probability: A logistic regression model is typically used to estimate the probability of treatment assignment based on observed covariates. 2. Calculating Weights: Each individual is assigned a weight that is the inverse of their probability of receiving the treatment they actually received. 3. Weighted Analysis: The reweighted sample is analyzed to estimate the treatment effect, which should be less biased than the unweighted estimate.
