Freedom251 › Statistical Analysis Software
SUDAAN
by SUDAAN
What SUDAAN is
SUDAAN is paid desktop statistical software for complex study data, including surveys, epidemiological studies, clinical trials, experiments, observational research, and longitudinal studies. Its procedures account for multistage and cluster designs, weighting, stratification, repeated measures, general cluster correlation, and multiply imputed analysis variables. The package contains ten analytic and three pre-analytic procedures, including weight adjustment and imputation. Variance estimation methods include Taylor series linearization, jackknife, and balanced repeated replication. SUDAAN supports statistical tests, regression models, and scripting. It reads SAS, SPSS, and plain ASCII text and can be installed as a SAS add-on. The site describes standalone Windows, SAS-callable, and command-line operation on Windows or Linux. R-callable SUDAAN supports interactive or batch use on Windows with R 4.4.1 or later, while Python-callable versions support interactive or batch workflows. Availability of Windows and Red Hat Enterprise Linux releases varies by configuration.
Who it suits
SUDAAN suits analysts handling complex survey, clinical, epidemiological, experimental, observational, or longitudinal data. It is also relevant to users working through SAS, R, Python, Windows, or Linux environments.
What it does well
- Handles clustering, weighting, and stratification
- Supports repeated and multiply imputed data
- Offers several variance estimation methods
- Reads SAS, SPSS, and ASCII files
- Provides SAS, R, Python, and command-line options
What to know first
- Paid software
- Platform availability varies by release
- R-callable version targets Windows
- Ordering requires selecting client type and operating system
Verdict
SUDAAN focuses on statistical analysis where study design affects estimates and variance. Its multiple interfaces and data formats support varied workflows, while RTI also lists training, email support, and phone assistance.
Facts from SUDAAN's own pages
- Accessibility
- RTI states that SUDAAN is fully compliant with Section 508 guidelines and links to a VPAT. · sudaanorder.rti.org, 12 Oct 2026
- Data formats
- SUDAAN can read SAS and SPSS files and may be installed as an add-on to SAS. · sudaanorder.rti.org, 12 Oct 2026
- Data formats and SAS
- SUDAAN reads SAS and SPSS files and may be installed as an add-on to SAS. · sudaanorder.rti.org, 12 Oct 2026
- Data import formats
- SAS, SPSS, plain ASCII text · sudaanorder.rti.org, 20 Sept 2026
- Deployment
- desktop · sudaanorder.rti.org, 20 Sept 2026
- Design features
- Supported study features include multistage and cluster designs, repeated measures, general cluster correlation, and multiply imputed analysis variables. · sudaanorder.rti.org, 12 Oct 2026
- Headquarters
- Research Triangle Park, North Carolina, USA · sudaanorder.rti.org, 28 Sept 2026
- Interfaces
- The site describes SAS-callable and standalone Windows versions, plus command-line execution on Windows or Linux. · sudaanorder.rti.org, 12 Oct 2026
- License offer
- People with active SAS-callable licenses may use R-callable SUDAAN at no extra charge for up to one year by contacting the SUDAAN Business Office for a promo code. · sudaanorder.rti.org, 12 Oct 2026
- License promotion
- The site says active SAS-callable license holders can use R-callable SUDAAN at no extra charge for up to one year by requesting a promo code. · sudaanorder.rti.org, 12 Oct 2026
- Maker
- SUDAAN is designed and developed at RTI International. · sudaanorder.rti.org, 12 Oct 2026
- Ordering
- The Products page begins an ordering flow asking the visitor to select client type and operating system before continuing. · sudaanorder.rti.org, 12 Oct 2026
- Platforms
- The listed SUDAAN 11.0.3/11.0.4 environments include Windows and Windows Server, with certain releases also available for Red Hat Enterprise Linux 6 or 7.9. · sudaanorder.rti.org, 12 Oct 2026
- Procedures
- SUDAAN comprises ten analytic and three pre-analytic procedures, including procedures for weight adjustment and imputation. · sudaanorder.rti.org, 12 Oct 2026
- Purpose
- SUDAAN analyzes complex study data, including survey, epidemiological, clinical trial, experimental, observational, and longitudinal data. · sudaanorder.rti.org, 12 Oct 2026
- Python integration
- Python-callable SUDAAN supports interactive use in a Python IDE or batch submission; the site describes single-user Windows and multi-user Windows Server versions. · sudaanorder.rti.org, 12 Oct 2026
- Regression models
- Yes · sudaanorder.rti.org, 20 Sept 2026
- R integration
- R-callable SUDAAN lets users run procedures interactively in an R integrated development environment or through R batch submission on Windows with R 4.4.1 or above. · sudaanorder.rti.org, 12 Oct 2026
- Scripting support
- Yes · sudaanorder.rti.org, 20 Sept 2026
- Security configuration
- The maker states SUDAAN was tested for USGCB compliance, runs in the standard user context, and does not alter approved USGCB configuration settings. · sudaanorder.rti.org, 12 Oct 2026
- Statistical tests
- Yes · sudaanorder.rti.org, 20 Sept 2026
- Study design
- Its procedures account for features such as clustering, weighting, stratification, repeated measures, and multiply imputed analysis variables. · sudaanorder.rti.org, 12 Oct 2026
- Study types
- It supports analysis of complex sample surveys, epidemiological studies, clinical trials, experiments, observational studies, and longitudinal data. · sudaanorder.rti.org, 12 Oct 2026
- Support
- The SUDAAN Statistical Software Center lists email support at [email protected] and a product coordinator phone number of +1 919 541 6602. · sudaanorder.rti.org, 12 Oct 2026
Where SUDAAN stands on Freedom251
- Statistical Analysis Software#104 of 106