firstknife 发表于 2009-11-17 11:22 
不知道9.1和9.2在logistic回归上有啥区别,哪位大侠能简单介绍一下么?
That is the only new stuffs in logistic in SAS 9.2
LOGISTIC ProcedureThe LOGISTIC procedure performs Firth's penalizedmaximum likelihood. The MULTIPASS option forces theprocedure to reread the input data set as needed ratherthan requiring its storage in memory or in a temporary fileon disk. Estimated culmulative probabilities have beenadded to the SCORE statement output. The CONTRAST statementnow includes the inverse link. The ROCCONTRAST statementcompares different ROC models. Odds ratios in the presenceof interactions are now computed, and odds ratio plots areprovided. Note that the GRAPHICS statement has beenreplaced with the PLOTS= option in the PROC statement. TheEFFECT plot can now handle multiple CLASS and continuousvariables. Standard errors are now produced for the exactparameter estimates.
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http://support.sas.com/documentation/cdl_main/index.html