Sammenlign metoder

	Panel Data Propensity Score Weighting	Propensity Score Matching
Fagfelt	Kausal inferens	Forskningsstatistikk
Familie	Regression model	Process / pipeline
Opprinnelsesår	2000-2003	1983
Opphavsperson	Hirano, Imbens & Ridder; Robins, Hernan & Brumback	Paul Rosenbaum and Donald Rubin
Type	Causal inference / panel weighting	Method
Opprinnelig kilde	Hirano, K., Imbens, G. W., & Ridder, G. (2003). Efficient Estimation of Average Treatment Effects Using the Estimated Propensity Score. Econometrica, 71(4), 1161-1189.	Rosenbaum, P. R., & Rubin, D. B. (1983). The central role of the propensity score in observational studies for causal effects. Biometrika, 70(1), 41–55.
Alias	panel PSW, panel IPW, longitudinal propensity score weighting, panel inverse probability weighting	PSM, propensity score weighting, covariate balance
Relaterte	5	3
Sammendrag	Panel Data Propensity Score Weighting (panel PSW) extends inverse probability weighting to longitudinal settings where the same units are observed across multiple time periods. It reweights observations by the inverse of each unit's time-varying probability of receiving treatment, creating a pseudo-population in which treatment is balanced on observed covariates at each period, and then estimates causal effects from repeated-measures data.	Propensity score matching (PSM) is a method for reducing confounding bias in observational studies by balancing baseline characteristics between treatment groups, simulating randomization. Developed by Rosenbaum and Rubin (1983), it estimates the probability of receiving treatment given observed covariates, then matches or weights treated and control individuals with similar treatment probabilities. Widely used in medicine, epidemiology, and policy evaluation when randomized trials are infeasible or unethical, enabling estimation of treatment effects while controlling for selection bias.