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: Tracking & documenting Change


From   Rituparna Basu <basur@pamfri.org>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Tracking & documenting Change
Date   Thu, 5 Apr 2012 18:30:00 +0000

Thank you Nick! 
Here is the rule:  The dataset is about healthcare service records....so there are duplicates bc one can have more than one doctor's visit in a given year. Also, Insurance is numeric. Do you think the code will be different bc of the duplicates? 
I will let you know if the code worked.

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
Sent: Thursday, April 05, 2012 11:21 AM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: Tracking & documenting Change

There seems here an indication that -Ins- changes Year to Year, but in that case why the duplicates? Note that the duplicates get in the way of counting transitions.

But I have to take your example literally because you really don't explain the precise rules.

Also, I assume -Ins- is string because you don't specify and it makes the code easier. But if not, then use -decode- first and use the result of that, not the numeric variable with labels.

gen Status = ""
sort ID Year
by ID: replace Status = "Stayed" if Year > Year[_n-1] & Ins == Ins[_n-1] by ID: replace Status = "Changed" if Year > Year[_n-1] & Ins != Ins[_n-1] by ID: replace Status = Status + " " +  Ins  + " " +  Ins[_n-1] if
!missing(Status)
by ID: replace Status = Status[_n-1] if missing(Status)

Code not tested.

Nick

On Thu, Apr 5, 2012 at 7:05 PM, Rituparna Basu <basur@pamfri.org> wrote:

> I would like to track the change of insurance status of a person from year to year. After tracking, I would like to document them as  %'stayed-same' , %'changed from A-B', etc.
> Here is the sample data:
> ID    Year  Insurance Status
> 1        04       A
> 1        04       A
> 1        04       A
> 1        04       A
> 1        05      B             Changed A-B
> 1        05       B           Changed A-B
> 1        05       B           Changed A-B
> 1        06      B            Stayed B
> 1        06       B            Stayed B
> 1        06       B            Stayed B
> 2        04       A
> 2        04       A
> 2        04       A
> 2        05       A         Stayed A
> 2        05       A        Stayed A
> 2       05       A         Stayed A
> 2        05       A        Stayed A
>
>

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


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index