SUDAAN logo

SUDAAN

by RTI International · Since 1958
No reviews yet
ActiveAvailable globally
Quick facts
VendorRTI International
Year launched1958
StatusActive
Location3040 Cornwallis, Research Triangle Park, NC 27709, US
Countries servedGlobal
Languages1
IntegrationsN/A
Free tierNO
Free trialNO
Contact salesYES

About SUDAAN

SUDAAN is a statistical software package for analyzing correlated and complex survey data.

SUDAAN is a specialized statistical software package from RTI International, a non-profit research institute. It is engineered specifically for the analysis of complex survey data and other correlated data, such as from clustered or longitudinal studies. The software provides a suite of procedures that correctly account for complex sample designs (e.g., stratification, clustering, unequal weighting) to produce accurate statistical inferences and variance estimates. Key capabilities include descriptive statistics, cross-tabulations, linear and logistic regression, and survival analysis, all adapted for survey data. It also offers advanced tools for weight adjustment and multiple imputation. SUDAAN is aimed at statisticians, epidemiologists, social scientists, and researchers who require rigorous methods for analyzing data from large-scale surveys and studies. Pricing is not publicly available, and support is offered via email and phone. The software is a standalone application for Windows.

Pros & Cons

Pros
  • Specifically designed to handle complex survey data, accounting for clustering, stratification, and weighting.
  • Offers a wide range of statistical procedures, from descriptive statistics to advanced modeling.
  • Developed and supported by experts at RTI International, a major research institute.
  • Provides robust methods for variance estimation, including Taylor series and replication methods.
  • Includes tools for data preparation, such as weight adjustment and multiple imputation.
Cons
  • Pricing information is not publicly available and requires contacting the vendor.
  • Has a steep learning curve, particularly for those not familiar with survey statistics.
  • Lacks a free trial or free tier for evaluation purposes.
  • The user interface may be less modern compared to other mainstream statistical packages.

Features

Key features

Complex Survey Data Analysis

Accounts for stratification, clustering, and unequal weighting in survey data to produce accurate variance estimates.

Descriptive Procedures

Computes frequencies, percentage distributions, odds ratios, relative risks, and chi-square tests for cross-tabulations.

Modeling Procedures

Supports linear regression, logistic regression (binary, multinomial, ordinal), and survival models (proportional hazards).

Weighting and Imputation

Provides tools for nonresponse and poststratification sample weight adjustments, and multiple imputation for item nonresponse.

Variance Estimation

Implements Taylor series linearization and replication methods (BRR, Jackknife) for variance estimation.

Additional features

Ratio Analysis

Computes estimates, standard errors, and confidence limits for generalized ratios.

Contrast Testing

Allows for testing single-degree-of-freedom contrasts among levels of a categorical variable.

Cochran-Mantel-Haenszel Tests

Performs chi-square tests associated with stratified two-way tables.

Survival Analysis

Includes procedures for analyzing survival data, such as proportional hazards models.

User-Defined Parameter Estimation

Computes point estimates and variances for user-defined parameters expressed as functions of means, totals, or ratios.

Breslow-Day Test

Provides a test for homogeneity of odds ratios or relative risks.

Kappa Measure of Agreement

Calculates Kappa statistics for inter-rater reliability.

Standardized Estimates

Computes standardized estimates for ratio and descriptive procedures.

Pricing

Free trial
Free version
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Countries & Languages

Global
Countries served
1
Interface languages
—
Billing currencies

Interface languages

English

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