Charlie Chunhua Liu
I have been working as an SAS programmer and project statistician for more than a decade in several research institutions and pharmaceutical companies, including the US Environmental Protection Agency, the National Institute of Statistical Sciences (NISS), the Washing University Medical School at St. Louis, Eli Lilly and Company, and Allergan Inc. I am now an Associate Director of Biostatistics, Data Management and Programming at Kythera Biopharmaceuticals Inc., Westlake Village, CA.
Subjects: Statistics
Areas of Research / Professional Expertise
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Clinical data presentation using beautiful and meaningful figures/graphs
Longitudinal data analyses
Missing Data Handling Techniques using LOCF, MI and MMRM.
Personal Interests
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I like to play golf and go hiking.
Books
Articles
Introducing and Producing Thunderstorm or Rain-drop Scatter Plots
Published: Jun 25, 2015 by SAS Global Forum 2013 Proceedings
Authors: C. Liu
Subjects:
Statistics
This paper introduces a new type of scatter plot, the Thunderstorm or rain-drop scatter plot with its application and production illustrated in examples.
RANDOM and REPEATED Statements - Model the Covariance Structure in Proc Mixed
Published: Jun 25, 2015 by MWSUG 2007 Conference Proceedings.
Authors: C Liu and D Cao
Subjects:
Statistics
This paper studies proper use of the RANDOM and REPEATED statements in Proc Mixed to model three commonly used covariance structures - unstructured (UN), compound symmetry (CS), and auto-regressive (AR(1)).
News
Producing High-quality Figures in SAS to Meet Publication Requirement
By: Charlie Chunhua Liu
Subjects: Statistics
The half day short course will cover publication requirements on high-quality figures, discus principles to produce high-quality figures in SAS, demonstrate using both SAS/GRAPH and ODS Graphics Procedures to produce some commonly used types of figures (line plots, scatter plots, bee swarm plots, box plots, and box plots overlaid with bee swarm plots etc.).
The instructor will also demonstrate to produce the above mentioned high-quality figures in listing (EMF, EPS, etc.) and document formats (RTF, PDF etc.).