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	Ponderazione dell'Inverso della Probabilità per Dati Panel	Modello Strutturale Marginale (MSM)
Campo	Inferenza causale	Inferenza causale
Famiglia	Regression model	Regression model
Anno di origine	2000	2000
Ideatore	Robins, Hernan & Brumback	James M. Robins, Miguel A. Hernan, Babette Brumback
Tipo	Reweighting / causal inference	Causal model / semiparametric weighting
Fonte seminale	Robins, J. M., Hernan, M. A., & Brumback, B. (2000). Marginal structural models and causal inference in epidemiology. Epidemiology, 11(5), 550-560.	Robins, J. M., Hernan, M. A., & Brumback, B. (2000). Marginal structural models and causal inference in epidemiology. Epidemiology, 11(5), 550-560.
Alias	panel IPW, longitudinal IPW, time-varying IPW, panel IPTW	MSM, MSM-IPTW, marginal structural Cox model, weighted structural model
Correlati	5	5
Sintesi	Panel Data Inverse Probability Weighting (panel IPW) estimates the causal effect of a time-varying treatment by reweighting observed units to create a pseudo-population in which treatment is independent of measured confounders at each time point. It extends the cross-sectional IPW framework to longitudinal settings where treatment status and confounders both evolve across multiple periods.	A marginal structural model is a causal modeling framework designed to estimate the effect of a time-varying treatment in the presence of time-varying confounders that are themselves affected by prior treatment. By reweighting observations with inverse probability of treatment weights, MSMs create a pseudo-population in which confounding is eliminated, enabling unbiased estimation of causal treatment contrasts even when standard regression adjustments would fail.