topic Sas dates in SAS Programming

Sas dates

Mdormond — Sun, 13 Jul 2014 20:51:49 GMT

I have a study that has a starting point of 1998. I also have the variable "event date" which consists of a number either +/- the starting point. I would like to convert this number into "year of event" to determine in what year after 1998 the event occurred. Is there a way to easily code this?

Re: Sas dates

PGStats — Sun, 13 Jul 2014 21:35:49 GMT

Use SAS date functions, shift the starting point date by event date days and get what year that is :

starting_point = '25OCT1998'd;

year = year(intnx("DAY", starting_point, event_date));

Re: Sas dates

Chrishi — Mon, 14 Jul 2014 07:30:55 GMT

data want;

set have;

event=event_date+starting_point;

year = year(event);

run;

hope this code will solve your issue.

Sudeer.

Re: Sas dates

RW9 — Mon, 14 Jul 2014 08:47:19 GMT

Whist the above two answers are completely correct, I am questioning what the question is. You state you have a starting point of 1998, which is fine. It is this event date variable which I am not sure on. Does this reference a time interval from the year or something else. I.e. does it contain days since 1998, years since then, quarters, or is it something completely adhoc such as category 2 indicates 5 years.