Mathematics
3 years ago

New method ensures stable estimation of treatment effects in longitudinal studies.

Scandinavian Journal of Statistics
Stable inverse probability weighting estimation for longitudinal studies
Vahe Avagyan, Stijn Vansteelandt

Paper Summary

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The article discusses a method called inverse probability weighting (IPW) to estimate the effect of changing exposure on outcomes in long-term studies. The researchers developed a new approach to make the IPW estimates more stable by adjusting the weights used in the analysis. By fitting separate models for each time point, they were able to prevent the weights from fluctuating too much. Their method performed well in simulations compared to other commonly used techniques.