It’s not often that you read a paragraph and it sticks in your mind for months. That this particular paragraph came not from some great literary work but rather from the proceedings of the annual meeting of the Association of Small Computer Users in Education is even more expected, but there it is. Douglas Kranch…
Continuing to learn Advanced SAS from the Propensity Score Matching with Calipers macro from Feng, Yu & Xu , we take our data set we created by doing a principal components analysis on the cases (experimental) group, using the coefficients from that analysis to score every record in our control group, concatenating the cases and controls,…
This is part 3 (hence the name) of my posts on how to learn advanced SAS from other people’s code. Yes, taking a class is a good idea – I have taken several – a couple from SAS Institute here and there, several before or after conferences like WUSS and SAS Global Forum. For me,…
Okay, where we left off on the propensity score macro from Feng, Wu and Xu and the nifty things you can learn from reading someone else’s code, in this case, their propensity score macro with calipers …. We previously dealt with the situation where you had no matches and exactly one match. If you find…
We had a cat named Beijing. “Had” is the key word in that sentence. This weekend I dropped Bejing off to live with my daughter, Jenn, who actually likes cats in general and this cat in particular. The main reason (besides that Jenn wanted her) is that the cat always wanted to sit on my…
I was using a macro this week written by Feng, Yu & Xu and there were so many less-used and advanced techniques in it I thought it would be a great example to use for teaching SAS. ** ** Nifty thing one computing the caliper width ***** ; Like with other propensity score macros, it…
Recently, I had the need to write the exact same programs twice, once using SAS and once using SPSS syntax. Even though these aren’t the same language, having done it once made it much easier to do it the second time. Let’s start with quintile matching. I’ve been rambling on about propensity scores lately and…
I wrote Part 1 a couple of years ago, so I guess I’m due for a part 2. In this case, I started with a data set in SAS but because it was going to be used by a group who had some SAS users and some SPSS users, they wanted to have the code…
Upfront confession – I completely copied the first part of this from a macro Paul Dickman wrote in 1999 because it did ALMOST exactly what I wanted. I tested it several times with different data and on different computers to see that it worked the way I expected. I actually found it on some random…
Although I tell my students all of the time that statistics is everywhere, even I did not really see where mixed martial arts, free rice and PROC SURVEYSELECT could possibly have anything in common. Here is what happened …. Mixed martial arts Darling daughter #3 after the Olympics decides not to go to college as…