Sas dates

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Contributor
Posts: 25

Sas dates

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?

Respected Advisor
Posts: 4,651

Re: Sas dates

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));

PG

PG
Contributor
Posts: 29

Re: Sas dates

data want;

set have;

event=event_date+starting_point;

year = year(event);

run;

hope this code will solve your issue.

Sudeer.

Super User
Super User
Posts: 7,404

Re: Sas dates

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.

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