Solved

computing the difference between Nov 1, 2013 and Nov 30, 2013 in SAS to equal 1 month

Posted on 2013-06-20
2
470 Views
Last Modified: 2013-06-21
I have the following macro in SAS to compute the difference betwen two dates.  The problem I am having is I am getting 0 for the difference between Nov 1, 2013 and Nov 30, 2013.

I would like to get 1 for 1 month.

I am using the following macro.  Can someone tell me how to modify the macro to give me 1 .

%macro age_months(date,birth);
round ((intck('month',&birth,&date)
- (day(&date) < day(&birth))))
%mend age_months;
0
Comment
Question by:morinia
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 14

Accepted Solution

by:
Aloysius Low earned 250 total points
ID: 39264846
I'm thinking of just doing
intck('month',&birth,&date+1)
inside the macro only.. mentally out works but nothing beats testing which I'm not able to do now..

 I'm wondering - what if the date of birth of 1 Dec and date is 30 Dec - are u expecting value of 1 also? Intck with month as the interval works by giving the number of months between 2 dates thus if both dates have the same month and year the value will be 0.. you might need to consider checking if the dates have the same month and year then use the days interval instead of month interval.. and if the number of days is more than 28 for example then set the value to 1..
0
 

Author Closing Comment

by:morinia
ID: 39265704
It worked fine.  Even though I have birthdate in the example, i am just using that macro to calculate a time period of enrollment which will always begin the first of the month and end on the last day of the month.  In this case I wanted to be able to calculate one month for a person enrolled for just month.
0

Featured Post

Moving data to the cloud? Find out if you’re ready

Before moving to the cloud, it is important to carefully define your db needs, plan for the migration & understand prod. environment. This wp explains how to define what you need from a cloud provider, plan for the migration & what putting a cloud solution into practice entails.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This post looks at MongoDB and MySQL, and covers high-level MongoDB strengths, weaknesses, features, and uses from the perspective of an SQL user.
This article shows how to get a list of available printers for display in a drop-down list, and then to use the selected printer to print an Access report or a Word document filled with Access data, using different syntax as needed for working with …
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
This is a high-level webinar that covers the history of enterprise open source database use. It addresses both the advantages companies see in using open source database technologies, as well as the fears and reservations they might have. In this…

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question