topic How to find outliers in proc logistic? in Statistical Procedures https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30897#M1257 <HTML><HEAD></HEAD><BODY><P>In ordinary regressions, we can use 2*sd or students' residual to detect and remove outliers, but in logistic regression, how to find outliers?</P><P>thanks</P></BODY></HTML> Tue, 17 Jan 2012 09:35:07 GMT MikeTurner 2012-01-17T09:35:07Z How to find outliers in proc logistic? https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30897#M1257 <HTML><HEAD></HEAD><BODY><P>In ordinary regressions, we can use 2*sd or students' residual to detect and remove outliers, but in logistic regression, how to find outliers?</P><P>thanks</P></BODY></HTML> Tue, 17 Jan 2012 09:35:07 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30897#M1257 MikeTurner 2012-01-17T09:35:07Z How to find outliers in proc logistic? https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30898#M1258 <HTML><HEAD></HEAD><BODY><P> If you are using PROC LOGISTIC, check out the syntax for the OUTPUT statement.&nbsp; It will give you many of the parameters you are looking for--studentized residuals, leverage, dfbetas, etc.</P><P></P><P>Steve Denham</P></BODY></HTML> Tue, 17 Jan 2012 12:09:31 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30898#M1258 SteveDenham 2012-01-17T12:09:31Z How to find outliers in proc logistic? https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30899#M1259 <HTML><HEAD></HEAD><BODY><P>The standardized deviance residuals and the likelihood residuals (available in PROC LOGISTIC in SAS 9.3, or in PROC GENMOD in earlier releases) have distributions reasonably close to standard normal.&nbsp; So, values greater than 2 or less than -2 might be considered suspect.&nbsp; </P></BODY></HTML> Tue, 14 Feb 2012 21:51:43 GMT https://communities.sas.com/t5/Statistical-Procedures/How-to-find-outliers-in-proc-logistic/m-p/30899#M1259 StatDave 2012-02-14T21:51:43Z