SANDS Virtual Meeting - November 18, 2021

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We will have three presentations at this virtual meeting.

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4:00-4:30pm -- Pies and Donuts: A New SAS® ODS Graphics Procedure Dessert!

ABSTRACT: Pie charts are a very common graphical display, particularly when showing part-to-whole comparisons. Previously, you needed to use the Graph Template Language (GTL) to create this display in the SAS® ODS Graphics system. But now, with the SGPIE procedure, pie and donut charts are a "piece of cake" to create! This paper focuses not only on the features of this new procedure, but also on the effective use of pie charts in general.

Bio for Dan Heath: Dan Heath is a principal systems developer at SAS Institute. A SAS user for more than 27 years, Dan specializes in SAS/GRAPH software, ODS Graphics, and related graphing technologies. Dan has been a speaker at a number of regional and local users' group meetings, including SAS Global Forum, PharmaSUG, and WUSS. He received a BS degree in computer science from North Carolina State University.

4:30-5:00pm -- ANCOVA, Change from Baseline Analyses, and the Lord’s Paradox

ABSTRACT: When a clinical trial is conducted to test potential treatment effects, the baseline value of the outcome variable is recommended to be collected. There is a long debate on how to adjust the baseline value in estimating the treatment effects. Analysis of covariance (ANCOVA) is a well-known method that treats the baseline as a covariate. On the other hand, another approach is to take the difference between the post-baseline value and the baseline value first (change from baseline) and then estimate the treatment effects. In some occasions, these two methods may lead to different conclusions. In this short talk, we will discuss the scenarios and provide suggestions on when to choose one method over another method.

Bio for Joey Lin: Dr. Joey Lin is the Associate Chair of Statistics in the Department of Mathematics & Statistics and also the Co-Director of the Statistical Consulting Center at SDSU. He has been using SAS for more than 25 years. He teaches SAS programming and data management course at SDSU regularly and he is the faculty advisor for the SAS Club at SDSU. He also uses SAS as his primary computational tool for his research.

5:00 – 5:30pm -- A Quick Look at Fuzzy Matching Programming Techniques Using SAS® Software

ABSTRACT: Data comes in all forms, shapes, sizes and complexities. Stored in files and datasets, SAS® users across industries recognize that data can be, and often is, problematic and plagued with a variety of issues. Data files can be joined without problem when each file contains identifiers, or “keys”, with unique values. However, many files do not have unique identifiers and need to be joined by character values, like names or E-mail addresses. These identifiers might be spelled differently, or use different abbreviation or capitalization protocols. This paper illustrates datasets containing a sampling of data issues, popular data cleaning and user-defined validation techniques, data transformation techniques, traditional merge and join techniques, the introduction to the application of different SAS character-handling functions for phonetic matching, including SOUNDEX, SPEDIS, COMPLEV, and COMPGED, and an assortment of SAS programming techniques to resolve key identifier issues and to successfully merge, join and match less than perfect, or “messy” data.

Bio for Kirk Paul Lafler: Kirk Paul Lafler is a lecturer and adjunct professor at San Diego State University; an advisor and adjunct professor at the University of California San Diego Extension; and teaches SAS, SQL, Python, R and Excel courses, seminars, workshops, and webinars to students, professionals and users around the world. Kirk has been a SAS user since 1979 and is the author of several books including, PROC SQL: Beyond the Basics Using SAS, Third Edition (SAS Press. 2019) along with papers and articles on a variety of SAS topics. Kirk has also been selected as an Invited speaker, educator, keynote and section leader at SAS conferences; and is the recipient of 25 “Best” contributed paper, hands-on workshop (HOW), and poster awards.

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Organizer of SANDS Virtual Meeting - November 18, 2021

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