Statalist


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

Re: st: Re: Monte Carlo Simulation, help!


From   STATA Dndee <[email protected]>
To   [email protected]
Subject   Re: st: Re: Monte Carlo Simulation, help!
Date   Sun, 18 Jan 2009 15:50:48 +0000 (GMT)

Hi

I have tried the following commande:

simulate mean=r(mean) var=r(Var), reps(10000): lnsim, obs(100)

from STATA help and for Inst. F

my command was: 
simulate mean=r(mean) var=r(Var), reps(10000): lnsim, obs(273) mu(71) sigma(2.7%)

and I got the following error:

loc not found
an error occurred	when simulate	executed	lnsim
r(111);
When it resolved I should run the analysis for all INSs and the mean? 

the SE in the floowing table was SD.


I have copied the  table again.

Many thanks for any comment
Bests


     +-------------------------------------------------------+
     | inst   cases   total   outcome     lci     uci     sd |
     |-------------------------------------------------------|
  1. |    f      71     273    26.01%   20.8%   31.2%   2.7% |
  2. |    e     259     809    32.01%   28.8%   35.2%   1.6% |
  3. |    c     121     345    35.07%   30.0%   40.1%   2.6% |
  4. |    d     262     726    36.09%   32.6%   39.6%   1.8% |
  5. |    b     192     480    40.00%   35.6%   44.4%   2.2% |
     |-------------------------------------------------------|
  6. |    a     120     204    58.82%   52.1%   65.6%   3.4% |
  7. | mean     713    2153    33.12%   31.1%   35.1%   1.0% |





--- On Sun, 18/1/09, STATA Dndee <[email protected]> wrote:

> From: STATA Dndee <[email protected]>
> Subject: Re: st: Re: Monte Carlo Simulation, help!
> To: [email protected]
> Date: Sunday, 18 January, 2009, 1:20 PM
> Thanks for your kind and quick reply Martin
> 
> I tried it before but couldn't understand the commands
> in Help file. I arranged the data with the CIs.				
> 
>     
> +-------------------------------------------------------+
>      | inst   cases   total   outcome     lci     uci    
> se |
>     
> |-------------------------------------------------------|
>   1. |    f      71     273    26.01%   20.8%   31.2%  
> 2.7% |
>   2. |    e     259     809    32.01%   28.8%   35.2%  
> 1.6% |
>   3. |    c     121     345    35.07%   30.0%   40.1%  
> 2.6% |
>   4. |    d     262     726    36.09%   32.6%   39.6%  
> 1.8% |
>   5. |    b     192     480    40.00%   35.6%   44.4%  
> 2.2% |
>      |
>   6. |    a     120     204    58.82%   52.1%   65.6%  
> 3.4% |
>   7. | mean     713    2153    33.12%   31.1%   35.1%  
> 1.0% |
>     
> +-------------------------------------------------------+
>        
> Regards 
> 
> 
> 
> --- On Sun, 18/1/09, Martin Weiss
> <[email protected]> wrote:
> 
> > From: Martin Weiss <[email protected]>
> > Subject: st: Re: Monte Carlo Simulation, help!
> > To: [email protected]
> > Date: Sunday, 18 January, 2009, 11:49 AM
> > A very warm welcome to you in the Stata community,
> good to
> > see you :-) Try -help simulate- for a start!
> > 
> > HTH
> > Martin
> > _______________________
> > ----- Original Message ----- From: "STATA
> Dndee"
> > <[email protected]>
> > To: <[email protected]>
> > Sent: Sunday, January 18, 2009 12:46 PM
> > Subject: st: Monte Carlo Simulation, help!
> > 
> > 
> > > Hi
> > > I want to rank institutions for and outcome given
> in
> > outcome% based on Monte Carlo simulation and produce a
> table
> > like table 2 in
> > http://plus.maths.org/issue46/risk/index.html.  The
> method
> > is also described by Spiegelhalter in BMJ, 1998,
> > 316(1701-1705).
> > > I am a beginner in STATA. Could anyone help me in
> > performing the analysis in STATA? I need the commands
> and
> > number of iterations.  Number of institutions is more
> than
> > in the sample.
> > > 
> > > Any help will be really appreciated.
> > > Kind regards
> > > 
> > > Inst. cases total outcome%
> > > f 71 273 26.01%
> > > e 259 809 32.01%
> > > c 121 345 35.07%
> > > d 262 726 36.09%
> > > mean 713 2153 33.12%
> > > b 192 480 40.00%
> > > a 120 204 58.82%
> > > 
> > > 
> > > 
> > > 
> > > *
> > > *   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/



© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index