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Re: st: date format


From   n j cox <n.j.cox@durham.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: date format
Date   Tue, 20 Sep 2005 16:42:09 +0100

The format of the variable, here %dN/D/Y, is essentially a
cosmetic matter. What you should be worried about is whether
some of the values are about a century out, because
of some previous error on reading the data into Stata.

Suppose the variable concerned is called -date-.

count if year(date) < 1910

will reveal how many are a century out. If there are some they need
fixing by

replace date = mdy(month(date), day(date), year(date) + 100) if year(date) < 1910

and you need to revise analyses done with these data.

Nick
n.j.cox@durham.ac.uk

Terra Curtis wrote

I have a variable of type %dN/D/Y. Some of the dates are in years
2000-2005. When I sort by this variable, Stata seems to recognize some of the 2000-2005 dates as 1900-1905, hence putting them as the earliest date rather than the most recent. Any ideas as to how to get Stata to recognize 01/01/05 as a 2005 date rather than 1905?

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