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RE: st: add up the total stay
STATA Dndee <email@example.com>
RE: st: add up the total stay
Fri, 12 Oct 2007 18:57:13 +0100 (BST)
Thanks for replies.
I am new to STATA and this discussion board and
apparently I couldnít describe my question. It is not
about destring the variables to date format. I can
manage it with this command for example for DateA:
gen NewVar = date( DateA, "dm20y")
format NewVar %td
My problem is to calculate 2 variables :
datecamedatewent and totalstayeachvisit in STATA. For
the example itís been done manually.
So there 2 questions
1) In STATA how can I manage to get
totalstayeeachvisit regarding that it depends on id
and any continues stay refer to columns DateCame
DateWent. What is the command to manage getting 2
outputs for SD101 and not 3?
2) How can I tell STATA replace 0 with 0.5 if
difference between Came and Went is 0?
I donít know where that 0.1 came from, the data are
Your help is very much appreciated.
id DateCame DateWent datecamedatewent
SD101 05nov2005 05nov2005 .5 _
SD101 05nov2005 11nov2005 6 6.5
SD101 28apr2005 28apr2005 .5 0.5
SD105 03jul2006 03jul2006 .5 0.5
SD105 29mar2006 29mar2006 .5 0.5
SD105 13jan2006 14jan2006 1 -
SD105 10jan2006 13jan2006 3 4
SD105 24may2004 25may2004 1 1
SD217 22sep2005 22sep2005 .5 0.5
--- Nick Cox <firstname.lastname@example.org> wrote:
> I think Arun later answered the question about
> two-digit years in dates himself (or herself).
> Just one tip: If I see sample data like
> SD101 05-Nov-05 05-Nov-05
> SD101 05-Nov-05 11-Nov-05
> SD101 28-Apr-05 28-Apr-05
> SD105 03-Jul-06 03-Jul-06
> SD105 29-Mar-06 29-Mar-06
> SD105 13-Jan-06 14-Jan-06
> SD105 10-Jan-06 13-Jan-06
> SD105 24-May-04 25-May-04
> SD217 22-Sep-05 22-Sep-05
> in a Statalist posting, I wouldn't go the -infix-
> route. I copy and paste that into an empty
> Stata data editor window. Often the results
> end up as a single string variable, but that
> is often fixable with a single
> split var1, destring
> followed by a little cleaning up. In this case
> the dates remain together within single variables.
> Arun Rajamohan
> > I am not sure what you mean by database. Hopefully
> it is convertible
> > to excel or raw or csv file. I draged the sample
> data from
> > your email
> > and saved it as a raw file. Then I loaded it into
> stata using infix. T
> > Your sample dataset is,
> > SD101 05-Nov-05 05-Nov-05
> > SD101 05-Nov-05 11-Nov-05
> > SD101 28-Apr-05 28-Apr-05
> > SD105 03-Jul-06 03-Jul-06
> > SD105 29-Mar-06 29-Mar-06
> > SD105 13-Jan-06 14-Jan-06
> > SD105 10-Jan-06 13-Jan-06
> > SD105 24-May-04 25-May-04
> > SD217 22-Sep-05 22-Sep-05
> > I sucked it up into stata using infix ...
> > infix str id 1-5 str d1 7-8 str m1 10-12 y1 14-15
> str d2
> > 17-18 str m2
> > 20-22 y2 24-25 using ~/desktop/stay.raw, clear
> > Now you will have your data in stata looking like
> > id d1 m1 y1 d2 m2 y2
> > SD101 05 Nov 05 05 Nov 05
> > ...
> > Then you may have to add 2000 to the year values.
> > [I would appreciate if someone can update me on an
> alternate method.
> > Some of my own datasets have years in the format
> 96, 97, 01, 04 etc.
> > instead of 1996, 1997, 2001, 2004... Stata date
> system does not like
> > years in 2 digit format. Am I right? I've always
> had to use a
> > do file
> > to sort through the years and convert them.]
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