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- W2022137905 abstract "ObjectiveClinical trials are unlikely to ever be launched for many comparative effectiveness research (CER) questions. Inferences from hypothetical randomized trials may however be emulated with marginal structural modeling (MSM) using observational data, but success in adjusting for time-dependent confounding and selection bias typically relies on parametric modeling assumptions. If these assumptions are violated, inferences from MSM may be inaccurate. In this article, we motivate the application of a data-adaptive estimation approach called super learning (SL) to avoid reliance on arbitrary parametric assumptions in CER.Study Design and SettingUsing the electronic health records data from adults with new-onset type 2 diabetes, we implemented MSM with inverse probability weighting (IPW) estimation to evaluate the effect of three oral antidiabetic therapies on the worsening of glomerular filtration rate.ResultsInferences from IPW estimation were noticeably sensitive to the parametric assumptions about the associations between both the exposure and censoring processes and the main suspected source of confounding, that is, time-dependent measurements of hemoglobin A1c. SL was successfully implemented to harness flexible confounding and selection bias adjustment from existing machine learning algorithms.ConclusionErroneous IPW inference about clinical effectiveness because of arbitrary and incorrect modeling decisions may be avoided with SL." @default.
- W2022137905 created "2016-06-24" @default.
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- W2022137905 date "2013-08-01" @default.
- W2022137905 modified "2023-09-23" @default.
- W2022137905 title "Super learning to hedge against incorrect inference from arbitrary parametric assumptions in marginal structural modeling" @default.
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- W2022137905 doi "https://doi.org/10.1016/j.jclinepi.2013.01.016" @default.
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