Is svyset a SPSS's command?

SAS® Model Selection Macros for Complex Survey Data Using PROC SURVEYLOGISTIC/SURVEYREG

ABSTRACT
Regression model selection is widely used in analyzing survey data. In SAS 9.1, Proc Surveylogistic and Proc Surveyreg were developed for analyzing data from complex surveys (stratified and/or clustered surveys). But neither of them has the capacity of automated model selection. “Manual” coding for each specific task would be time-consuming and very labor intensive. This paper details two major macros to perform automated forward, backward and stepwise model selection for complex survey data: %StepSvylog for logistic regression using Proc Surveylogistic, and %StepSvyreg for linear regression using Proc Surveyreg.


http://www.mwsug.org/proceedings/2011/stats/MWSUG-2011-SA02.pdf

Multilevel Modeling of Complex Survey Data
Tihomir Asparouhov1
, Bengt Muthen2
Muthen & Muthen1
University of California, Los Angeles

http://www.statmodel.com/download/SurveyJSM1.pdf

Model Selection for Incomplete and Design-Based Samples: An Application to Cervix Cancer Screening

AbstractThe Akaike Information Criterion, AIC, is one of the most frequently used methods to select one or a few good, optimal regression models from a set of candidate models. In case the sample is incomplete, the naive use of this criterion on the so-called complete cases can lead to the selection of poor or inappropriate models. A similar problem occurs when a sample based on a design with unequal selection probabilities, is treated as a simple random sample. In this paper we consider a modification of AIC, based on reweighing the sample in analogy with the weighted Horvitz-Thompson estimates. It is shown that this weighted AIC-criterion provides better model choices for both incomplete and design-based samples. The use of the weighted AIC-criterion is illustrated on data from the Belgian Health Interview Survey, which motivated this research. Simulations show its performance in a variety of settings.
http://missingdata.lshtm.ac.uk/preprints/hens_et_al_v2.pdf

这个不是stata的么。。。