A couple of my students are having difficulty with restructuring data sets in SAS. This is not surprising. Restructuring is very important, but not so easy. I decided to run a few simple examples of PROC TRANSPOSE to help clarify things. Here is the code and output. Continue reading
I heard a story a long time ago, and I don’t remember who told it to me and I’m probably getting all the details wrong, but I wanted to try to recreate the story from memory because it illustrates one of the perils of blind reliance on statistical models to identify “important” variables. Continue reading
I’m teaching a couple of classes, Introduction to R and Introduction to SAS, and I’m finding that students will turn in homework a variety of different ways. I’m fine with this up to a point, but I think that I should encourage a simple uniform approach, because out in the real world, your boss or your clients will not appreciate a haphazard and disorganized approach. Here’s a suggested format for homework assignments that will (hopefully) get you in the practice of turning into things in an organized fashion. Continue reading
I’m working part-time on a research grant and I want to publish some of the work I’ve done on this grant. The title of the paper tentatively is “Validating elastic net generated electronic health record breast cancer phenotypes against hospital tumor registries: a case control study.” My co-authors are Dan Connolly and Russ Waitman. I want to summarize the history of the effort so far and why I am considering the BMC Medical Informatics and Decision Making as the next place to submit the article. Continue reading
I don’t call myself a “big data” analyst, but when a call went out seeking authors for various topics for the Encyclopedia of Big Data, I volunteered to write two articles. Here are the details. Continue reading
I should have titled this page “I’m a Star!” because the School of Medicine’s Marketing and Communications Office is asking me questions to prepare a short biography to highlight the research I’m doing. Actually, that office is talking to over a hundred researchers in the School of Medicine, so I’m not really a star after all. But here are the questions that they started with. I’ll reply by email and they may get more information by email or a face-to-face interview. Makeup! Continue reading
I got a question about how to export a graph in SAS to a program like PowerPoint. There are several ways to do this, and I explained that you can right click on any graph that appears on your screen and copy it to the clipboard and then open up PowerPoint and right click on a slide and paste it in. That’s fairly standard on any Windows system. I presume that SAS supports similar approaches on the Macintosh and Linus, but I have no easy way of testing this.
But there are other ways to export a graph. You can tell SAS to save a particular graph to a file and then you can import that file into PowerPoint. It works, but there is a twist. Continue reading
I’m making a webinar presentation in April for The Analysis Factor. I’ve done this several times in the past. The talk in April will be on tests of equivalence and non-inferiority, a topic which I have covered briefly in my newsletter. I thought I’d share a first draft of the abstract here on my blog. Continue reading
I’ve gotten some helpful feedback that I need to encourage more interactions among students in the on-line classes, Introduction to R, Introduction to SPSS, and Introduction to SAS. No just interactions of the students with the teacher, but interactions between the students.
In many online classes this is done by encouraging online discussion of the material in the class. This is not so easy, however, for these three classes. I can just imagine myself posting the following on Blackboard. “Tell me what you think about the read.csv function in R.”
There are a couple of ways, however, that make sense for technical classes like these. Continue reading