https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301912#M63959 <P>Thank you very much. I will check that.</P> Sun, 02 Oct 2016 14:01:33 GMT scottmaya 2016-10-02T14:01:33Z https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301889#M63948 <P>I have a set of Direct Mail Program data, which includes the mail campaign start and end dates, the offers provided to customer and the number of customer responses.</P><P>I want to do multiple regression analysis to how these variables can impact the response rate of customers. I am new to SAS so can you give me any idea on how to convert the dates and offer types into useful numeric variables for analysis.</P><P>Your help would be greatly appreciated.</P> Sat, 01 Oct 2016 15:30:21 GMT https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301889#M63948 scottmaya 2016-10-01T15:30:21Z https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301890#M63949 <P>Depending on the PROC you use you may not need to change your character variables. The CLASS statement will handle the parameterization.&nbsp;</P> <P>&nbsp;</P> <P>Otjerwise, for dates, make sure they're numeric with a dare format. Use INPUT() to convert them if required. If you need to calculate date variables such as lag lead or moving averages look at PROC EXPAND.&nbsp;</P> Sat, 01 Oct 2016 16:30:46 GMT https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301890#M63949 Reeza 2016-10-01T16:30:46Z https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301912#M63959 <P>Thank you very much. I will check that.</P> Sun, 02 Oct 2016 14:01:33 GMT https://communities.sas.com/t5/SAS-Programming/Changing-date-and-string-variable-for-regression-analysis/m-p/301912#M63959 scottmaya 2016-10-02T14:01:33Z