This page is moving to a new website.
This is a nice overview of how to use R to adjust survival curves in an observational study. It covers weighting and modeling with covariates and criticizes several approaches. Continue reading
This page is moving to a new website.
This is a nice overview of how to use R to adjust survival curves in an observational study. It covers weighting and modeling with covariates and criticizes several approaches. Continue reading
This page is moving to a new website.
An email discussion about the appropriate percentage effort on research grants has produced a lot of interesting discussions. One person raised an interesting question. The typical data analysis, he claimed, might involve a few hours reviewing the input data set, a few hours conducting the analysis and a few hours preparing a statistical summary, but even after a generous estimate of the work at each of the time points, he could only come up with 22 hours of effort, which corresponds roughly with a 1% FTE. I wrote back describing some of the things that might occur before the data analysis that might add time to this effort. Continue reading
This page is moving to a new website.
This outlines a way to produce “beautiful Beamer presentations” using Stata. This is a step towards the goal of reproducible research. Continue reading
This page is moving to a new website.
This package was mentioned at the most recent meeting of the Kansas City R Users Group and was too cute not to mention. Continue reading
This page is moving to a new website.
I attended a conference on quality and patient safety, and some of the speakers mentioned some interesting resources. I googled them and saved the links here. Continue reading
This page is moving to a new website.
I am drafting up a policy on statistical support for research at my part-time job at UMKC. It is loosely based on standards at the University of California, Davis and Kansas University Medical Center. An early draft appears below. I’ve gotten some suggestions that setting a minimum percentage effort is a bad idea. What do you think?
This page is moving to a new website.
I had three students who successfully completed the Introduction to SAS class that I am teaching at UMKC. Here is the advice that I offered about how to continue to learn more about SAS. Continue reading
This page is moving to a new website.
This article talks about how bad the maternal mortality rates are in the United States and how bad our effort to try to quantify the rate is. Continue reading
This page is moving to a new website.
This is a classic data set for testing out image analysis. You have a data set of 25,000 images which are labelled dogs or cats. This is easy for a human to do, but can you develop an algorithm that can tell the difference? Continue reading
This page is moving to a new website.
If you are interested in text mining, this is a good data set to start with. It is a bunch of text messages, each one line long, that have been classified by a human as either spam or ham (ham is a legitimate message). Continue reading