https://communities.sas.com/t5/SAS-Procedures/PROC-LIFEREG-help/m-p/52450#M14430 solved! Mon, 20 Dec 2010 14:45:23 GMT deleted_user 2010-12-20T14:45:23Z https://communities.sas.com/t5/SAS-Procedures/PROC-LIFEREG-help/m-p/52449#M14429 Dear SAS users,<BR /> <BR /> I am trying to fit a weibull distribution using proc lifereg and I wanted to test the hypothesis that the shape parameter is 1. I am not sure which option to use for this. <BR /> Any help will be appreciated. Thanks in advance.<BR /> <BR /> proc lifereg data=tp;<BR /> model tumour*censor(1)=/d=weibull ;<BR /> run; Message was edited by: Ulviya Mon, 20 Dec 2010 04:40:34 GMT https://communities.sas.com/t5/SAS-Procedures/PROC-LIFEREG-help/m-p/52449#M14429 deleted_user 2010-12-20T04:40:34Z https://communities.sas.com/t5/SAS-Procedures/PROC-LIFEREG-help/m-p/52450#M14430 solved! Mon, 20 Dec 2010 14:45:23 GMT https://communities.sas.com/t5/SAS-Procedures/PROC-LIFEREG-help/m-p/52450#M14430 deleted_user 2010-12-20T14:45:23Z