advanced analytics

K. Gwet, Ph.D.
Advanced Analytics, LLC


K. Gwet, Ph.D., Statistical Consultant, Mathematical Statistician
PO Box 2696, Gaithersburg, MD 20886-2696
Ph. 301-326-9001, Fax: 301-560-3473. E-mail: Click here


Areas of Interests: design of statistical surveys, healthcare analytics, inter-rater reliability assessment, outlier detection & analysis, SAS & R programming, Excel VBA programming.


Selected Publications:

K.L. Gwet, Ph.D (2014). Handbook if Inter-Rater Reliability: The Definitive Guide to Measuring the Extent of Agreement Among Multple Raters, 4th Edition, Advanced Analytics, LLC.

Quantification of Myocardial Blood Flow in Absolute Terms Using 82Rb PET Imaging, by Sergey V. Nesterov, MD, PHD, PMP, Emmanuel Deshayes, MD, MSC, Roberto Sciagrà, MD, Leonardo Settimo, MD, Jerome M. Declerck, PHD, Xiao-Bo Pan, PHD, Keiichiro Yoshinaga, MD, PHD, Chietsugu Katoh, MD, PHD, Piotr J. Slomka, PHD, Guido Germano, PHD, Chunlei Han, MD, PHD,
Ville Aalto, MSC, Adam M. Alessio, PHD, Edward P. Ficaro, PHD, Benjamin C. Lee, PHD, Stephan G. Nekolla, PHD, Kilem L. Gwet, PHD, Robert A. deKemp, PHD, PENG, PPHYS, Ran Klein, PHD, John Dickson, PHD, James A. Case, MD, PHD, Timothy Bateman, MD, PHD, John O. Prior, MD, PHD, Juhani M. Knuuti, MD, PHD

A comparison of Cohen's Kappa and Gwet's AC1 when calculating inter-rater reliability coefficients: a study conducted with personality disorder samples, by Nahathai Wongpakaran, Tinakon Wongpakaran, Danny Wedding and Kilem L Gwet. April 2013.

Computing inter-rater reliability and its variance in the presence of high agreement, by KL Gwet, Ph.D. British Journal of Mathematical and Statistical Psychology (2008), 61, 29–48.

Variance Estimation of Nominal-Scale Inter-Rater Reliability with Random Selection of Raters, by Kilem Li Gwet, Ph.D., Psychometrika - Vol. 73, No. 3, 407–430. September 2008.

INTRARATER RELIABILITY, by Kilem L. Gwet, Wiley Encyclopedia of Clinical Trials, Copyright 2008 John Wiley & Sons, Inc.

Kappa Statistic is not Satisfactory for Assessing the Extent of Agreement Between Raters, by Kilem L. Gwet,Statistical Methods For Inter-Rater Reliability Assessment, No. 1, April 2002

Computing Inter-Rater Reliability With the SAS System, by Kilem L. Gwet, Statistical Methods For Inter-Rater Reliability Assessment, No. 3, October 2002

inter-rater reliability inter-rater reliability with sas intraclass correlation with excel Practical Guide to Statistics with Excel, R, Calc


E-documents on Nonparametric Statistical Techniques
  The Friedman Test with Excel in 3 Simple Steps
  The Kruskal-Wallis Test with Excel2007 in 3 Simple Steps
  The Kruskal-Wallis Test with Excel2010 in 3 Simple Steps
  The Wilcoxon Nonparametric Tests with Excel in 3 Simple Steps