RDSU - News

Jan 4, 2006. Numerous software examples are available for modeling longitudinal data, using Mplus, MLwiN, HLM, SAS, Stata, SPlus, and SPSS. Click HERE to access..

Jan 24, 2006. I have some SPSS code that will adjust probablities for multiple testing effects. The algorithm provides for the following adjustments:

• One-Step Bonferroni
• One-Step Sidak
• Step-Down Holm
• Step-Down Sidak
• Step-Down Finner
• Step-Up Hommel
• Step-Up Hochberg
• Step-Up Simes

The algorithm may be obtain by downloading HERE.

Feb 2, 2006. Out of necessity, I wrote a small reliability calculator that will estimate composite construct reliability and average variance extracted for a single scale. One needs unstandardized factor loadings, item errors, and scale variance estimate to run this routine, typical LISREL output. Click HERE to access the ZIP file..

Feb 6, 2006. I have a very nice 2 x 2 diagnostic routine, that estimates sensitivity, specificity, positive and negative predictive values, accuracy, etc. This is a DOS based routine. Click HERE to access the ZIP file.

Feb 20, 2006. I have linked EDGAR - an experimental design generator and randomizer routine. This interactive routine will assist in the development of experimental designs. Click HERE to access EDGAR.

July 28, 2006. Information is now available on the proposed Spring 07 course entitle: Managing, Describing and Visualizing Secondary Health Datasets. Click HERE to access the information.

April 10, 2007. Check out the geo-graphical and geo-statistical routines maintained in the RDSU. See movies demonstrating these routine in the RDSU Library.

August 22, 2007. The RDSU to participate in the UW Institute for Clinical and Translational Research (ICTR) grant review.

Feb 4, 2008. I have a SAS program that implements the test for missing completely at random (MCAR) missing data as outlined in Little's (1998) JASA article. Note that this macro requires SAS version 8.2 (or higher), because PROC MI is used to obtain ML estimates of the covariance matrix and mean vector. Click HERE to access the SAS file.

Feb. 25, 2008 The RDSU is providing online demostrations of various statistical and data analysis issues. Check out the demonstrations on our library site.