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Ryan D. Kilpatrick

Researcher at AbbVie

Publications -  52
Citations -  4949

Ryan D. Kilpatrick is an academic researcher from AbbVie. The author has contributed to research in topics: Population & Hazard ratio. The author has an hindex of 23, co-authored 47 publications receiving 4578 citations. Previous affiliations of Ryan D. Kilpatrick include University of California, Los Angeles & Los Angeles Biomedical Research Institute.

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Journal ArticleDOI

Relationship between Epoetin Alfa Dose and Mortality: Findings from a Marginal Structural Model

Ouhong Wang, +9 more
- 01 Feb 2010 - 
TL;DR: There is appreciable CBI at higher EPO doses, and EPO dose was not associated with increased mortality in marginal structural model analyses that more completely addressed this confounding.
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Anemia and Associated Clinical Outcomes in Patients with Heart Failure Due to Reduced Left Ventricular Systolic Function

Peter A. McCullough, +13 more
- 01 Oct 2013 - 
TL;DR: Anemia is associated with decreased functional capacity, reduced quality of life, and worsened outcomes among patients with heart failure due to reduced left ventricular ejection fraction (HFREF) among those with HFREF.
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Evolving Statistical Methods to Facilitate Evaluation of the Causal Association Between Erythropoiesis-Stimulating Agent Dose and Mortality in Nonexperimental Research: Strengths and Limitations

Brian D. Bradbury, +10 more
- 01 Sep 2009 - 
TL;DR: Sources of bias in nonexperimental studies of ESA therapy in hemodialysis patients are described and analytical methods that may help minimize bias in such studies are critically appraised.
Journal Article

LDL cholesterol response and statin adherence among high-risk patients initiating treatment.

Suma Vupputuri, +8 more
- 01 Mar 2016 - 
TL;DR: Data support the ACC/AHA recommendation to monitor LDL-C response among patients initiating statins and women and African Americans were less likely to have high adherence, whereas having cardiologist visits was associated with high adherence.
Journal ArticleDOI

Exploring large weight deletion and the ability to balance confounders when using inverse probability of treatment weighting in the presence of rare treatment decisions.

Ryan D. Kilpatrick, +6 more
- 01 Feb 2013 - 
TL;DR: This work sought to explore assumptions of no unmeasured confounders, and that all patients have a positive probability of receiving all levels of treatment, empirically in the context of epoetin‐alfa dosing and mortality in patients with EPO.