Who I Am

An experienced statistical programmer specialized in SAS programming. By training, I am a mathematical sociologist and systems engineer; by occupation, senior statistical programmer / data archivist at the Office of Population Research, Princeton University. I play the piano and racquet ball -- not at the same time, though.

Contact Info

Chang Y. Chung, Ph.D., M.S.E.
#216 Wallace Hall
Office of Population Research
Princeton University
Princeton, NJ 08540
(609) 258-2360
cchung at princeton dot edu

Certifications

SAS Certified Advanced Programmer V9
SAS Certified Professional V8
SAS Certified Professional - Data Management V6
SAS Certified Professional V6
Microsoft Certified Technology Specialist -- SQL Server® 2008 Database Development

Skill Set

With my own assessments -- 10 being the wizard level; 1 capable of doing "Hello, World!"

data step(10); proc sql(9); macro(10); ods and proc template(9); reporting (9); graph and annotate(8); integration with ms office, vba, data providers, and shell(8); xml, xslt, xquery(6); iml(4)

Papers

"What Were We Talking About at Those SAS Conferences, or Let's Make Some Tag Clouds." 2011. Paper 253-2011. Programming: Basics and Beyond Section (invitation only). Proceedings of SAS Global Forum 2011 (SGF2011). Las Vegas, NV. (with John King). . Also as paper PO05. Proceedings of the Northeast SAS Users Group (NESUG2010) 23rd Annual Conference Proceedings. Baltimore, MD. (with John King).

"Is This Macro Parameter Blank?" 2009. Paper 022-2009. Proceedings of SAS Global Forum 2009 (SGF2009). Washington, D.C. (with John King).

%IFN - A Macro Function." 2006. paper 042-31. Proceedings of the SAS Users Group International (SUGI31) 31st Annual Conference. San Francisco, CA. (with Ian Whitlock).

"Calculating Changes and Differences Using PROC SQL -- With Clinical Data Examples." 2005. paper pm02. Proceedings of the Northeast SAS Users Group (NESUG2005) 18th Annual Conference Portland, ME. (with Lei Zhang).

"Retaining, Lagging, Leading, and Interleaving Data." 2005. paper tu09. Proceedings of the Pharmaceutical Industry SAS Users Group (PharmaSUG2005) Annual Conference. Pheonix, AZ. (with Toby Dunn).

"Page X of Y with PROC REPORT" 2005. paper cc31. Proceedings of the Pharmaceutical Industry SAS Users Group (PharmaSUG2005) Annual Conference. Pheonix, AZ. (with Toby Dunn).

"%cyArrow, a New Annotate Macro." 2005. paper 048-30. Proceedings of the SAS Users Group International (SUGI 30) 30th Annual Conference. Philadelphia, PA. (with Huang, Ya).

"Recursive Subroutine Macros." 2004. paper po02. Proceedings of Northeast SAS Users Group(NESUG2004) 17th Annual Conference. Baltimore, MD.

SAS-L Postings

Hundred most recent postings of mine, archived at google.

Awards

SAS-L Rookie of the Year (SAS-LROY) in 2003. Many thanks to those who voted for me!