Links to Additional Sites and Software
University of Michigan (ICPSR) Data Archive https://www.icpsr.umich.edu
SAS software https://www.sas.com
Stata software https://www.stata.com
Sudaan software https://www.rti.org/impact/sudaanr-statistical-software-analyzing-correlated-data
SPSS software https://www.ibm.com/products/spss-statistics
Mplus software https://statmodel.com
R software https://www.r-project.org/
WesVar software is Retired as of 2025 Link to Westat
IVEware https://smponline.isr.umich.edu/
SDA from ICPSR https://www.icpsr.umich.edu (online analysis system with survey correction capabilities)
svy Python https://svylab.com/docs/svy/
Software Updates
Stata V18 is current as of February 2025
SPSS V30 is current as of February 2025
SAS v9.4 is current as of February 2025
Base R 4.4.3 is current and R Survey package 4.4-2 is current as of 2024.
MPLus v8.11 is current as of February 2025
IVEware 0.3 is current as of February 2025
See software websites for additional updates and version information.