Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


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

Re: st: Linking a patient file with an event file


From   Lisa Cook <hlthsrvcsphd@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Linking a patient file with an event file
Date   Sun, 3 Mar 2013 16:16:40 -0500

That did the trick! Thank you again.

On Sun, Mar 3, 2013 at 4:03 PM, Carl Severson <carlseverson@gmail.com> wrote:
> I had a typo in my code. Try this:
>
>       by id2013: gen edcount = _N
>       by id2013: gen visit = _n
>       reshape wide visitVariable visitDate etc, i(id2013) j(visit)
>
> ... it is possible that I am misunderstanding how you want your data
> formated. If the above code doesn't work, maybe let me know a bit more
> specifics about the data you have, the format it is in, and the format
> you want it in. An example of your data (or fake data in the same
> structure as your actual data) might be useful.
>
> Cheers
> Carl
>
> On Sun, Mar 3, 2013 at 1:36 PM, Lisa Cook <hlthsrvcsphd@gmail.com> wrote:
>> Hi Carl,
>>
>> I'm not at the University of Calgary, but thanks for the offer! I
>> really appreciate the help.
>>
>> Using the code you suggest, I get a variable that takes the values
>> edcount = 1 for the first visit, edcount = 2 for the second, edcount =
>> 3 for the third, and so on. Thus, when I reshape, I get an error if I
>> try to leave the edcount variable off my list of variables, because
>> it's not a constant value. Is there a way to just keep the highest
>> value of edcount for each person?
>>
>> Lisa
>>
>> On Sun, Mar 3, 2013 at 3:01 PM, Carl Severson <carlseverson@gmail.com> wrote:
>>> Hey Lisa, glad it helped.
>>>
>>> I think there is an easier solution than a foreach loop. Will this
>>> accomplish what you want?
>>>
>>>      by id2013: gen edcount = _n
>>>      by id2013: gen visit = _n
>>>      reshape wide visitVariable, i(id2013) j(visit)
>>>
>>> This should give you a single line per person, with a variable that
>>> has the number of visits per person.
>>>
>>> Out of curiosity, what kind of models are you running?
>>>
>>> Hope that helps.
>>>
>>> p.s. In the rare, rare chance that you are located at the University
>>> of Calgary, I'd be happy to sit down with you in person and help with
>>> you data management issues.
>>>
>>> Carl
>>>
>>> On Sun, Mar 3, 2013 at 12:30 PM, Lisa Cook <hlthsrvcsphd@gmail.com> wrote:
>>>> Thank you, Carl.
>>>>
>>>> The code you suggested worked, but once the reshaping is done, I no
>>>> longer have an edcount variable (it turns into edcount1, edcount2,
>>>> edcount3, etc.). I thought maybe I could use a macro to replace all
>>>> the values of edcount with 1 if nonmissing and 0 if missing, then sum
>>>> them to get a new count variable. I thought I would try doing it one
>>>> step at a time, since I'm inexperienced with macros.
>>>>
>>>> foreach var of varlist `edcount?' {
>>>>   replace `var' = 1 if `var' !=.
>>>> }
>>>>
>>>> This results in the error "varlist required". Any ideas?
>>>>
>>>> Thanks!
>>>> Lisa
>>>> *
>>>> *   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/
*
*   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 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index