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Re: st: survival analysis
From
martine etienne <[email protected]>
To
[email protected]
Subject
Re: st: survival analysis
Date
Fri, 15 Oct 2010 11:01:01 -0700 (PDT)
No problem Steve,
Thanks for trying to help.
----- Original Message ----
From: Steve Samuels <[email protected]>
To: [email protected]
Sent: Fri, October 15, 2010 1:52:45 PM
Subject: Re: st: survival analysis
Martine-
First of all I apologize for misspelling your name in my first post.
I've seen survival analysis applied to suppression data, but it's not
simple. I'm afraid that I don't have sufficient knowledge in this
area to advise you. If you are at a medical center, perhaps the
statisticians can help or point you in the right direction.
Best of luck,
Steve
Steven J. Samuels
[email protected]
18 Cantine's Island
Saugerties NY 12477
USA
Voice: 845-246-0774
Fax: 206-202-4783
On Fri, Oct 15, 2010 at 1:25 PM, martine etienne <[email protected]> wrote:
> thank you Steve,
> 1. the event of interest is viral suppression=1, the event could only happen
>one
> time, but because there are a few patients with repeated measure of viral
> suppression it may have happened more than once
> 2. yes, to question number 2
> 3. yes for question number 3
> 4. No, I have time 2 for all patients
>
> thanks for you help
>
>
>
>
>
> ----- Original Message ----
> From: Steve Samuels <[email protected]>
> To: [email protected]
> Sent: Fri, October 15, 2010 11:59:23 AM
> Subject: Re: st: survival analysis
>
> Martine Ettiene:
>
> This sounds like a "cohort" of patients who were defined at time 1 and
> about whom information was gathered at time 2
>
> Some questions to clarify your problem:
>
> 1. What was the event of interest? Could the event have happened
> more than once to a patient?
>
> 2. When you say, "retrospective", do you mean that, if the event took
> place between time 1 and time 2 you have the date?
>
> 3. Are there any patients for which the only information is that the
> event took place between time 1 and time 2, but the dates are
> uncertain (e.g. you have only month) or missing?
>
> 4. Are there patients for whom you have _no_ information at time 2?
>
> For your information: Our program is spelled "Stata", not "STATA"
> (see section 8.2 of the FAQ).
>
> Steve
>
> Steven J. Samuels
> [email protected]
> 18 Cantine's Island
> Saugerties NY 12477
> USA
> Voice: 845-246-0774
> Fax: 206-202-4783
>
>
> On Fri, Oct 15, 2010 at 11:23 AM, martine etienne <[email protected]>
>wrote:
>> Dear Statalist,
>>
>> I have a question about using survival analysis in STATA. I have a
>> cross-sectional dataset (of patients on a particular regimen from time 1 to
>>time
>> 2). The thing I'm unsure about is my time 2 which is really the date of the
>> cross-sectional data collection. I have previous dates going back
>> retrospectively from cross-sectional data analysis to date 1.
>>
>> Can I use survival analysis with this cross-sectional data?
>> thanks,
>> Martine
>>
>>
>>
>>
>> *
>> * 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/
>
>
>
>
> *
> * 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/
*
* 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/