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From |
Sangamitra Ramachander <sangamitra@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Cramer Ridder test for multinomial logit model - syntax error |

Date |
Sun, 21 Nov 2010 12:26:00 +0000 |

Tirthankar, Re-opening Stata solved this. The test now works. Thank you very much for your time and help, I really appreciate it! Best, Sangamitra On Sun, Nov 21, 2010 at 12:17 PM, Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com> wrote: > Sangamitra, > > Here is my output from running the above example: > > ************************************ > . crtest > > **** Cramer-Ridder test for combining outcome categories > > Ho: Candidates for pooling have the same regressor coefficients > apart from the intercept > > ln L ln Lr LR P>chi2 > Indemnit:Prepaid -534.362 -549.988 31.252 0.000 > Indemnit:Uninsure -534.362 -539.756 10.790 0.056 > Prepaid:Uninsure -534.362 -542.431 16.139 0.006 > > degrees of freedom for chi-square distribution: 5 > ************************************ > > Please ensure that your edited and saved version of -crtest- is being > called by Stata. You can check by typing: > . viewsource crtest.ado > and looking for the changes you made. Make sure all instances of > "e(k_cat)" have been replaced. > > You should also try closing and restarting Stata and then check if it > works. If all else fails, I will send you my edited version of the > "crtest.ado" file off-list which should work. > > T > > 2010/11/21 Sangamitra Ramachander <sangamitra@gmail.com>: >> Tirthankar, >> >> Thanks very much. I got the ado file from the same source that you >> mention below: >> >> *! version 1.2 (25 November 2003) Joao Pedro Wagner de Azevedo >> >> I tried what you have suggested: changed all instances of "e(k_cat)" >> to "e(k_out)" on the ado file, but I get the same invalid syntax >> error. I'm not sure if this should be implemented in a specific way >> other than manually, which is what I tried. Thanks again. >> >> Best, >> Sangamitra >> >> >> On Sun, Nov 21, 2010 at 10:22 AM, Tirthankar Chakravarty >> <tirthankar.chakravarty@gmail.com> wrote: >>> Sangamitra, >>> >>> You need to tell the list where you get user-written ado-files from. In my case: >>> . ssc install crtest >>> . which crtest >>> <output omitted> >>> *! version 1.2 (25 November 2003) Joao Pedro Wagner de Azevedo >>> >>> This routine will not work with a fully updated Stata 10.1 because the >>> scalars returned by -mlogit- have been renamed since Stata 8 (my >>> guess), viz., the number of categories used to be returned in >>> "e(k_cat)", but is now returned in "e(k_out)". So you need to change >>> all instances of the occurrence of "e(k_cat)" in the file "crtest.ado" >>> to "e(k_out)" (on line #s 28, 43, 44 and 81). Then, as in the >>> following example, -crtest- should work fine: >>> >>> ********************************************* >>> webuse sysdsn3, clear >>> mlogit insure age male nonwhite site2 site3 >>> crtest >>> ********************************************* >>> >>> T >>> >>> On Sun, Nov 21, 2010 at 1:42 AM, Sangamitra Ramachander >>> <sangamitra@gmail.com> wrote: >>>> >>>> Dear All, >>>> >>>> I'm trying to use the Cramer Ridder test to see whether I can combine >>>> two of the categories used in a multinomial logit model. >>>> >>>> I have used this test in the past with an old version of stata (Stata >>>> 8). I am now using Stata 10 and have looked at the help and it says >>>> the command is, after the mlogit, 'crtest' - this should tell you >>>> pairwise whether categories are different. >>>> >>>> However, when I do this, I get an invalid syntax error. I am not sure >>>> if this test ceases to work in subsequent versions of stata or if I >>>> should be doing something different. I've updated my version of Stata >>>> 10 and downloaded the ado file for this test. >>>> >>>> I've scanned the archives of this list but wasn't able to find a >>>> similar discussion. Any help would be very much appreciated! Thank you >>>> very much. >>>> >>>> Best, >>>> Sangamitra >>>> * >>>> * 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/ >>> >>> >>> >>> -- >>> To every ω-consistent recursive class κ of formulae there correspond >>> recursive class signs r, such that neither v Gen r nor Neg(v Gen r) >>> belongs to Flg(κ) (where v is the free variable of r). >>> >>> * >>> * 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/ >> > > > > -- > To every ω-consistent recursive class κ of formulae there correspond > recursive class signs r, such that neither v Gen r nor Neg(v Gen r) > belongs to Flg(κ) (where v is the free variable of r). > > * > * 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/

**References**:**st: Cramer Ridder test for multinomial logit model - syntax error***From:*Sangamitra Ramachander <sangamitra@gmail.com>

**Re: st: Cramer Ridder test for multinomial logit model - syntax error***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

**Re: st: Cramer Ridder test for multinomial logit model - syntax error***From:*Sangamitra Ramachander <sangamitra@gmail.com>

**Re: st: Cramer Ridder test for multinomial logit model - syntax error***From:*Tirthankar Chakravarty <tirthankar.chakravarty@gmail.com>

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