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RE: st: stset
From
Neophytos Stylianou <[email protected]>
To
"[email protected]" <[email protected]>
Subject
RE: st: stset
Date
Tue, 29 Jan 2013 17:02:40 +0000
Nick,
I think you misunderstood me.
I was just wondering if the stset works on both data formats, wide or long, since i did not know in which format my data was in..
I just wanted to know that i am doing the right thing since i am new to survival data.
Sorry for the misunderstanding.
Neo
________________________________________
From: [email protected] [[email protected]] on behalf of Nick Cox [[email protected]]
Sent: 29 January 2013 16:02
To: [email protected]
Subject: Re: st: stset
Manifestly I don't have any information that you have not given us.
You told us that you had a "wide format" which I understand you to
mean that you have several time variables and several survival
variables. If that's wrong and -stset- works, then good, but I am left
wondering why you posted and why you described your data in the way
you did.
Nick
On Tue, Jan 29, 2013 at 3:56 PM, Neophytos Stylianou
<[email protected]> wrote:
> By saying that it won't work do you mean? that the stset command would give me an error?
> Because I am doing it and it does set the data.
>
> In my dataset I have admission as well as discharge/death date per observation
>
> In Statas manual the stset takes the form of:
> stset failuretime, failure(mortality==1) id(id) enter =(admissiontime)
>
> so why it would not work if my dataset as I showed an example earlier has unique observations that have the admission date as well as the discharge/death date?
>
> thanks
> Neo
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of Nick Cox
> Sent: 29 January 2013 15:45
> To: [email protected]
> Subject: Re: st: stset
>
> No; that won't work. You don't have a single time variable or survival variable. What makes you think that compatible with -stset-?
>
> You need to -reshape- your data.
>
> Nick
>
> On Tue, Jan 29, 2013 at 3:38 PM, Neophytos Stylianou <[email protected]> wrote:
>
>> I am about to perform some survival analysis and I need to set my dataset in survival data format.
>>
>> Will the stset command work when data is not in the correct format i.e wide instead of long?
>>
>> I have a dataset of many variables (550) and observations (60,000) in this format:
>> Mortality timeADM timeDisch ID
>> Survived Jan2003 Jan2003 1
>> Died Feb2004 Mar2004 2
>> Survived Jun2006 Aug2006 3
>>
>> From what is saw in the stset help file as well as Statas manual this will be ok but I am just worried it is not in the long format.
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