Search Results - "De LEON, Alexander R."

Binocular sensitivity and specificity of screening tests in cross‐sectional diagnostic studies of paired organs by Perera, Yamuni, Ren, Mingchen, Punzalan, Joyce Raymond B., Rudnisky, Christopher J., de Leon, Alexander R.

“…We introduce new binocular accuracy measures as alternatives to conventional marginal measures that can be used to evaluate screening tests in diagnostic…”
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Performance of variable selection methods using stability-based selection by Lu, Danny, Weljie, Aalim, de Leon, Alexander R, McConnell, Yarrow, Bathe, Oliver F, Kopciuk, Karen

“…Variable selection is frequently carried out during the analysis of many types of high-dimensional data, including those in metabolomics. This study compared…”
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A two‐level copula joint model for joint analysis of longitudinal and competing risks data by Lu, Xiaoming, Chekouo, Thierry, Shen, Hua, Leon, Alexander R.

“…In this article, we propose a two‐level copula joint model to analyze clinical data with multiple disparate continuous longitudinal outcomes and multiple…”
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General mixed-data model: Extension of general location and grouped continuous models by De LEON, Alexander R., Carriègre, K. C.

“…The authors propose a general model for the joint distribution of nominal, ordinal and continuous variables. Their work is motivated by the treatment of…”
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Gaussian Copula Mixed Models for Clustered Mixed Outcomes, With Application in Developmental Toxicology by Wu, Beilei, de Leon, Alexander R

“…This paper is concerned with the analysis of clustered data from developmental toxicity studies with mixed responses, i.e., where each member of the cluster…”
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Joint estimation of multiple disease-specific sensitivities and specificities via crossed random effects models for correlated reader-based diagnostic data: application of data cloning by Withanage, Niroshan, de Leon, Alexander R., Rudnisky, Christopher J.

“…We present a model for describing correlated binocular data from reader‐based diagnostic studies, where the same group of readers evaluates the presence or…”
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JPEG compression of stereoscopic digital images for the diagnosis of diabetic retinopathy via teleophthalmology by Baker, Chad F., MD, Rudnisky, Christopher J., MD, Tennant, Matthew T.S., MD, FRCSC, Sanghera, Paul, MD, Hinz, Bradley J., MD, FRCSC, De Leon, Alexander R., PhD, Greve, Mark D.J., MD, FRCSC

“…Abstract Background: Canada's vast size and remote rural communities represent a significant hurdle for successful monitoring and evaluation of diabetic…”
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High-resolution stereoscopic digital fundus photography versus contact lens biomicroscopy for the detection of clinically significant macular edema by Rudnisky, Christopher J, Hinz, Brad J, Tennant, Matthew T S, de Leon, Alexander R, Greve, Mark D J

“…The purpose of this study was to compare high-resolution stereoscopic digital photography to contact lens biomicroscopy (CLBM) for the diagnosis of clinically…”
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Joint Estimation of Diagnostic Accuracy Measures for Paired Organs - Application in Ophthalmology by de Leon, Alexander R., Soo, Andrea, Bonzo, Daniel C., Rudnisky, Christopher J.

“…Diagnostic studies in ophthalmology frequently involve binocular data where pairs of eyes are evaluated, through some diagnostic procedure, for the presence of…”
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Benefits of stereopsis when identifying clinically significant macular edema via teleophthalmology by Rudnisky, Christopher J., Tennant, Matthew T.S., de Leon, Alexander R., Hinz, Bradley J., Greve, Mark D.J.

“…Background: The need to incorporate stereopsis into a teleophthalmology system is controversial. Detection of hard exudate in the macula is suggested by some…”
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Gaussian copula mixed models for clustered mixed outcomes, with application in developmental toxicology by Wu, Beilei, de Leon, Alexander R

“…This paper is concerned with the analysis of clustered data from developmental toxicity studies with mixed responses, i.e., where each member of the cluster…”
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Letter to the Editor by Wu, Beilei, de Leon, Alexander R.

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Letter to the Editor by Wu, Beilei, de Leon, Alexander R.

“…Regarding Paper “Sample size determination in clinical trials with multiple co‐primary endpoints including mixed continuous and binary variables” by T. Sozu ,…”
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Letter to the Editor by Wu, Beilei, de Leon, Alexander R

“…Regarding Paper "Sample size determination in clinical trials with multiple co-primary endpoints including mixed continuous and binary variables" by T. Sozu,…”
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Letter to the Editor by Wu, Beilei, de Leon, Alexander R.

“…Regarding Paper “Sample size determination in clinical trials with multiple co‐primary endpoints including mixed continuous and binary variables” by T. Sozu,…”
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Kim, Y., Choi, Y.-K., and Emery, S. (2013), "Logistic Regression With Multiple Random Effects: A Simulation Study of Estimation Methods and Statistical Packages," The American Statistician, 67, 171-182 by Inan, Gul, Ilk-Dag, Ozlem, de Leon, Alexander

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Letter to the editor by Wu, Beilei, de Leon, Alexander R

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Latent Markov Models for Longitudinal Data by De Leon, Alexander R.

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