topic Re: Deriving EPOCH in SAS Programming

Deriving EPOCH

ysantosh18 — Wed, 08 Mar 2017 13:10:52 GMT

Hi Every-One,

Am working in Clinical Domain!

What are the Considerations to derive EPOCH, with 'study day' or Visitnum ?

Since for a project what we are working for has 3 - visits, 1st-visit(1st day) to 2nd-visit(11 to 17 days) is Treatment 2nd(11to17 days)-3rdVisit(37 to 47 days) is FollowUp-period, Here the problem raised, few subjects has visited only twice to site (1st and 2nd) they are early terminators, but protocol is designed in such a way to capture these subjects 2nd visit as 3rd visit(Visitnum-3) and few of them are out of Visit-2 window (eg: Visit2 should be b/w 11 to 17 days, but subject has come to site on 26th day), for these Subjects, EPOCH should be Treatment or Follow-up ?

and REFERENCE Period is 1st day to 42nd Day(Includes Screening, Treatment & Follow-up)

Let me know your sujjestions especially for Sudy Dropouts......

Thanks in Advance

Santosh

Re: Deriving EPOCH

Kurt_Bremser — Wed, 08 Mar 2017 13:16:42 GMT

Please supply your example data in a data step, so the helpers here have something to work with.

And show which values you want to derive in each input observation.

And make use of linefeeds, paragraphs and proper punctuation in your posts, this spaghetti text is awful to read.

Re: Deriving EPOCH

ysantosh18 — Wed, 08 Mar 2017 13:25:00 GMT

Thanks for your sujjestion, ok let me make it clear

Re: Deriving EPOCH

RW9 — Wed, 08 Mar 2017 13:52:25 GMT

Hi,

Sorry, this is not a SAS related question. Your question is how to handle your clinical data, this should be defined by a) your company standards, b) industry standards e.g. CDISC. I would suggest you start by asking collegues and reading the CDISC implementations guides which detail this type of things. This forum is for SAS language questions, so not the place for this.