topic Re: How to calculate age from birthdate using SAS VA in SAS Visual Analytics

How to calculate age from birthdate using SAS VA

ksulistyo — Sat, 31 Oct 2015 21:50:00 GMT

Hi,

I'm a total noob in SAS VA. Currently using SAS VA 7.2.

Kindly advise how to calculate age from birthdate using SAS VA.

This should be simple, just substraction between today and birthdate.

I looked at the Operators in New Calculated Item, but nothing worked.

I have searched/googled this topic but what the solutions were using SAS programming or EG, but not applicable in SAS VA.

Thank you.

Re: How to calculate age from birthdate using SAS VA

kannand — Sun, 01 Nov 2015 02:18:21 GMT

I'm not sure of SAS VA is different from SAS Base, but ran across this.... might help you...

age = INT(YRDIF(birth-date, ending-date,'ACTUAL'));

https://support.sas.com/publishing/authors/extras/61860_update.pdf

Re: How to calculate age from birthdate using SAS VA

PGStats — Sun, 01 Nov 2015 03:07:22 GMT

The syntax is

age = YRDIF(birthDate, refDate, "AGE");

where refDate can be Today() if that is what you want.

Re: How to calculate age from birthdate using SAS VA

MichelleHomes — Sun, 01 Nov 2015 03:19:14 GMT

Welcome to the SAS Visual Analytics community.

As you may have discovered dates in SAS Visual Analytics are not treated the same way as Base SAS. Also the very useful Base SAS date functions such as intck and yrdif are not available.

A date in SAS Visual Analytics is treated as a category data item and not as the traditional SAS date type in the interface. The underlying storage is a SAS date number so you can use the Year function and DatePart function (in case your date is datetime) and you use the TreatAs function to treat the data item as a number if you want to calculate the days. Have a read through the post https://communities.sas.com/t5/SAS-Visual-Analytics/Finding-No-of-Days-between-two-dates-in-SAS-VA/m-p/153702/highlight/true#M617

In future, please search first the community before posting a question as you may find your question has been answered already. 🙂

Kind Regards,

Michelle

Re: How to calculate age from birthdate using SAS VA

ksulistyo — Sun, 01 Nov 2015 06:49:28 GMT

Thank you for all your responses.

Unfortunately SAS VA doesn't support YRDIF.

I followed the link from Michelle with some modification and it worked 🙂

Here is what I do:

( TreatAs(_Number_, Now()) - TreatAs(_Number_, 'Birthdate'n) ) / ( 365 * 24 * 60 * 60 )

Regards,

Karina

Re: How to calculate age from birthdate using SAS VA

Expengu — Mon, 30 May 2016 05:34:52 GMT

Here is a more precise calculation for age as at today:

IF ( (

IF ( ( ( Year(DatePart(Now())) Mod 4 ) = 0 ) AND ( DayOfYear(DatePart(Now())) > 59 ) )

RETURN ( DayOfYear(DatePart(Now())) - 1 )

ELSE DayOfYear(DatePart(Now())) ) < (

IF ( ( ( Year('Birth Date'n) Mod 4 ) = 0 ) AND ( DayOfYear('Birth Date'n) > 59 ) )

RETURN ( DayOfYear('Birth Date'n) - 1 )

ELSE DayOfYear('Birth Date'n) ) )

RETURN ( ( Year(DatePart(Now())) - Year('Birth Date'n) ) - 1 )

ELSE ( Year(DatePart(Now())) - Year('Birth Date'n) )

This considers the leap years, where 29^th February is the 60^th day of the leap year. Also replace DatePart(Now()) with a date variable will give you the difference in year between two dates.