SUDAAN is a single program comprising a family of analytic and preanalytic
procedures. SUDAAN procedures are used to analyze and process
data from various studies and provide appropriate analysis for complex
sample surveys and other observational and experimental studies involving
repeated measures and cluster-correlated data. A complex sample is a sample
that may be multi-stage, stratified, unequally weighted, and/or clustered.
SUDAAN is able to accommodate a variety of study designs and computes
standard errors for ratio estimates, means, totals, regression coefficients, and
other statistics. In addition, beginning with Release 10, SUDAAN has
procedures that address some pre-analysis needs, including computing
sample weight adjustments (nonresponse and post-stratification) and
performing imputation using the weighted sequential hot deck approach.
Whether you are a statistician or a research scientist not necessarily schooled
in the analysis of complex samples, you will find SUDAAN to be invaluable
for performing statistical analyses on such data.

难道大家对这个软件都很陌生？

额，这个是SURVEY专用的软件把，是针对COMPLEX DATA DESIGN的。。
我最近打算学，不懂楼主知道哪里可以下载的吗。

怎么和sas联用，有没有教程？

哪里有好用的SAS软件下载 啊？