g Gopal
on

 

Hi Team,

 

Can we have a space in-between in STUDYID / USUBJID values? We don't have any specific restriction for providing with respect to spacing for STUDYID, USUBJID variables in IG.

Example: STUDYID = ABCSTDY-A 101  ;   USUBJID = ABCSTDY-A 101-001-101

 

Forums: SDTM

Sergiy
on May 19, 2023

Hi Gopal, 

I am not aware of any specific formal requirements about the usage of space characters in ID.

However, you would rather not follow such a practice to avoid potential problems in your data processing.

For example, is a trailing space character in your STUDYID variable above represent a part of the real value or not? ( "ABCSTDY-A 101 " vs. "ABCSTDY-A 101"). 

Also, invisible characters are quite tricky for manual diagnostics. 

Kind Regards,
Sergiy

 

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