Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: RE: RE: Change string to year and month date


From   "DeMichele, Matthew" <mdemichele@rti.org>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE: Change string to year and month date
Date   Fri, 18 Oct 2013 11:27:59 -0400

I didn't really think about the underlying framework of dates stored in Stata. And, it might be that my needs can be met by simply extracting the year only (which I have done). I have a date of birth variable in which the day was removed for confidentiality reasons. I wanted to calculate age of admissions and exposure types of variables, but it seems best to just compute these as years of age. 

Thank you, Matthew 

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Joe Canner
Sent: Friday, October 18, 2013 11:24 AM
To: statalist@hsphsun2.harvard.edu
Subject: st: RE: Change string to year and month date

Matthew,

A Stata date variable without a day doesn't make much sense, since a date variable is the number of days since 1/1/1960.  Please clarify what it is you intend to do with this variable so that we can give the best advice on how to proceed.

Regards,
Joe Canner

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of DeMichele, Matthew
Sent: Friday, October 18, 2013 11:16 AM
To: statalist@hsphsun2.harvard.edu
Subject: st: Change string to year and month date

I'm trying to create a date variable using only the year and the month from a string variable formatted as YYYYMM. For example, 200405 = May, 2004. I ran the syntax below, but this results in DAY appearing in the first two columns as "01" such that the example above would be 01May2004. 

gen DATE_OF_BIRTH3= date(DATE_OF_BIRTH2, "YM") format DATE_OF_BIRTH3 %td

thank you. Matthew 


*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index