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   Articles with "confounder" as a keyword



Bias testing, bias correction, and confounder selection using an instrumental variable model.

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recommendations! Published in 2020 at "Statistics in medicine"

DOI: 10.1002/sim.8730

Abstract: Instrumental variable (IV) analysis can be used to address bias due to unobserved confounding when estimating the causal effect of a treatment on an outcome of interest. However, if a proposed IV is correlated with… read more here.

Keywords: instrumental variable; ols estimator; bias correction; bias ... See more keywords

Adjusting Adjustments: Using External Data to Estimate the Impact of Different Confounder Sets on Published Associations

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recommendations! Published in 2024 at "Epidemiology"

DOI: 10.1097/ede.0000000000001821

Abstract: Background: A 2013 meta-analysis observed a protective association between overweight body mass index (BMI) (vs. normal BMI) and all-cause mortality that was particularly strong in people aged ≥65. Estimates informing this meta-analysis were highly heterogeneous,… read more here.

Keywords: meta analysis; analysis; confounder; association ... See more keywords

When is a confounder not a confounder?

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recommendations! Published in 2019 at "Respirology"

DOI: 10.1111/resp.13460

Abstract: As much as we would like to be guided by robust evidence from randomized controlled trials, the fact is that most of what we know about the causes of respiratory disease comes from observational studies… read more here.

Keywords: exposure outcome; confounding factors; causal; confounder confounder ... See more keywords

Assessing the impact of unmeasured confounding in external control arms via tipping point analyses.

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recommendations! Published in 2024 at "Journal of Clinical Oncology"

DOI: 10.1200/jco.2024.42.16_suppl.e23065

Abstract: e23065 Background: Estimates of the comparative efficacy of new therapies from single-arm settings can be obtained in advance of RCTs through use of external control arms (ECAs).[1] ECAs are collections of patients with the index… read more here.

Keywords: single arm; trial; confounder; arm trial ... See more keywords