BookmarkSubscribeRSS Feed
Calcite | Level 5



I am doing a research project examining the association between Vitamin A intake and CVD in Hispanic women.


I am using 5 datasets: demographics, smoking, medical conditions, total dietary intake, and body measures. I want to merge these data sets. However, the total dietary intake dataset would need to transform the detailed file into a person-level file (with one record for each person) before merging it with NHANES demographic and other data files by using  seqn as the unique identifier.


How can I do this in SAS? I have attached the total dietary intake dataset for reference. Thanks!

Super User

I didn't read every single one of 10,000 plus lines but I did not see any duplicates of SEQN until the bottom of the file where apparently something other than data appears in the last 5 or 6 lines. So you need to describe what is keeping you from merging the file.


I'm not going to read the entire documentation on the NHANES website to determine what any of that data represents or the problems involved. I would recommend searching the site carefully as I doubt that you are the first person to attempt such and there is likely to be example code there. Just may take some digging.


Don't miss out on SAS Innovate - Register now for the FREE Livestream!

Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.


Register now!

How to Concatenate Values

Learn how use the CAT functions in SAS to join values from multiple variables into a single value.

Find more tutorials on the SAS Users YouTube channel.

Click image to register for webinarClick image to register for webinar

Classroom Training Available!

Select SAS Training centers are offering in-person courses. View upcoming courses for:

View all other training opportunities.

Discussion stats
  • 1 reply
  • 2 in conversation