Working with Dates and Times in SAS (Tutorial)

Kunko — Fri, 07 Jun 2019 01:22:02 GMT

Dear SAS Community experts,

I am SPSS user and currently using SAS to analyze data for my PhD study. As a new user of SAS I am unable to calculate the length of time duration in days between drug supply for patients receiving certain drugs every few weeks or few months.

newStudyCode Date of supply Drug

1 25AUG2014:00:00:00 A

1 22SEP2014:00:00:00 A

1 27OCT2014:00:00:00 A

1 28NOV2014:00:00:00 A

1 23DEC2014:00:00:00 A

2 30JUN2016:00:00:00 B

2 10AUG2016:00:00:00 B

2 08SEP2016:00:00:00 B

2 11OCT2016:00:00:00 B

2 01NOV2016:00:00:00 C

2 19DEC2016:00:00:00 C

2 11JAN2017:00:00:00 C

2 13FEB2017:00:00:00 C

I do have about 189 drugs taken by patients for five years with recurrent dates of supply for each patient. For instance, a patient could take a single drug or combination of drugs over a time. I have modified my post below and also edited on your website support page. I want to know the time intervals between each supply and the average of the intervals for each drug.

Re: Working with Dates and Times in SAS (Tutorial)

ChrisNZ — Thu, 06 Jun 2019 21:37:31 GMT

What output do you expect from the data shown?

topic Working with Dates and Times in SAS (Tutorial) in SAS Programming

Working with Dates and Times in SAS (Tutorial)

Re: Working with Dates and Times in SAS (Tutorial)