Re: st: Landmark analysis

[Sripal Kumar <sripalkumar@gmail.com>]

Thanks Steve and thank you for clarifying the correct spelling. I
would have used STATA going along with the rest of the programs
assuming that it is an acronym.  I wonder what stata means.

On Thu, Feb 3, 2011 at 10:54 AM, Steven Samuels <sjsamuels@gmail.com> wrote:
> You must -stset- your data. Then -sts graph , hazard- will estimate the
> hazard function over the entire range of the data; you can add a line for
> the time of your landmark event and annotate it. See  -help- for
> "added_line_options" and  "added_text_options".
>
> -stcox- and the contributed program -stpm2- ("findit") handle allow
> time-dependent covariates. With them you can test equality of hazard
> functions before and after any event. If the times of your landmark event
> are not constant, you can  get graphs in -stcox- and -stpm2- by creating
> time-dependent strata: one pre-event, one post-event. To create these you
> could, for example, -stsplit- the data at the time of the event.
>
>
> Note that "STATA" is not a correct spelling of "Stata" (Statalist FAQ 8.4).
>  Names all in upper case are acronyms, names whose letters are letters
> (usually the first) of words in the original, sometimes abandoned, name.  So
> in statistics: "SAS" = "Statistical Analysis System"; "SPSS" = "Statistical
> Package for the Social Sciences";  "SUDAAN"= "SUrvey DAta ANalysis".
>  "Stata" is not such a word; its letters never stood for anything else.
>
> Steve
> sjsamuels@gmail.com
>
> On Feb 1, 2011, at 7:58 PM, Sripal Kumar wrote:
>
> Dear all,
>
> I am interested in doing a landmark surival analysis- an analysis
> where you compare treatment effect before and after a certain
> landmark.  For example, I am interested in constructing a hazard plot
> for two treaments from start of treament to 30 days and then from 30
> days to end of follow-up in the same plot.  Is there a way to do this
> in STATA.
> thanks,
> Sripal.
> *
> *   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/