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Re: st: Re: Monte Carlo Simulation, help!
Thanks dear Martin
I tried that and got the same error. Then arranged the data in data editor like this
+-----------------------+
| obs mean var |
|-----------------------|
1. | 1 71 .0007049 |
2. | 2 259 .000269 |
3. | 3 121 .00066 |
4. | 4 262 .0003177 |
5. | 5 192 .0005 |
|-----------------------|
6. | 6 120 .0011873 |
+-----------------------+
and then this command with vluaes of the mean obs from the last table:
simulate mean=r(mean) var=r(Var), reps(10000): lnsim, obs(6) mu(713
) sigma(0.000102877)
And got the same error
loc not found
an error occurred when simulate executed lnsim
r(111);
And that as before everything in data editor was gone. there should be something with "lnsim" in command.
Thank you so much for your help.
--- On Sun, 18/1/09, Martin Weiss <[email protected]> wrote:
> From: Martin Weiss <[email protected]>
> Subject: Re: st: Re: Monte Carlo Simulation, help!
> To: [email protected]
> Date: Sunday, 18 January, 2009, 3:55 PM
> "loc not found" sounds weird, the real trouble is
> that you put a "%" sign in
> the "sigma" specification. Just put 0.027
> there...
>
> HTH
> Martin
> _______________________
> ----- Original Message -----
> From: "STATA Dndee"
> <[email protected]>
> To: <[email protected]>
> Sent: Sunday, January 18, 2009 4:50 PM
> Subject: Re: st: Re: Monte Carlo Simulation, help!
>
>
> > 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/
> >
>
> *
> * 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:
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* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/