This article discusses how to use SAS to filter variables in a dataset based on the percentage of missing values or duplicate values. The missing value statistics can be implemented by either DATA step programming on your own or reusing the existing powerful PROC FREQ.
PROC FREQ is one of the most popular procedures in the SAS language. It is mostly used to describe frequency distribution of a variable or combination of variables in contingency tables. However, PROC FREQ has much more functionality than that. For an overview of all that it can do, see
A ghoulish Halloween Boo to all my readers! Hope my costume freaks you out, but even if it doesn't, I’m positive PROC FREQ will in a few amazing ways! Today’s Programming 2: Data Manipulation Techniques class asked about the power of PROC FREQ. Since I stopped to explain some of it's benefits to
PROC FREQ is often the first choice when you want to generate basic frequency counts, but it is the last choice when it is compared to other statistical reporting procedures. People sometimes consider PROC FREQ last because they think they have little or no control over the appearance of the
Recently a reader chimed in with a question on the Do Loop article by Rick Wicklin on how to create a bar chart with percent statistics. Rick used SAS 9.3 and the reader wanted to do the same with SAS 9.2. For the basic (non-grouped) bar chart, the process is the
This week's SAS author's tip comes from Jack Shostak - manager of statistical programming at the Duke Clinical Research Institute. Despite his youthful appearance, Jack's been using SAS since 1985 and is the author of SAS Programming in the Pharmaceutical Industry and coauthor of Common Statistical Methods for Clinical Research with SAS Examples,
Rick Wicklin and I are engaged in an arms race of birthday-related blog posts. To recap: Rick analyzed national data about births in the USA and what time of year they are most likely to occur. I responded by analyzing the birthdays of my Facebook friends. Rick responded by analyzing
