All functions | 
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Causal Mediation Analysis  | 
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The Sobel mediation test  | 
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Estimation and Sensitivity Analysis for Multiple Causal Mechanisms  | 
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Linear hypotheses for natural effect models  | 
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Expand the dataset and impute nested counterfactual outcomes  | 
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Linear hypotheses for natural effect models  | 
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Fit a natural effect model  | 
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Expand the dataset and calculate ratio-of-mediator probability weights  | 
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Regression-based causal mediation analysis  | 
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Significance Test for Treatment-Mediator Interaction in Causal Mediation Analysis  | 
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