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From |
KONSTANTARAS KONSTANTINOS <dinokon@otenet.gr> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
RE: st: problem with perturb |

Date |
Sat, 27 Dec 2008 19:43:45 +0200 (EET) |

Sorry, but copy paste did not work previously. Please find below the output of perturb before it stops: The last few lines of output are: The reclassification probabilities will be adjusted to let the expected frequencies of the reclassified variable be equal to those of _Iy

ear_2002

The expected table will be quasi-independent ln(q)=: 2.944 Adjusted expected table: ---------------------------------------- original | variable |

----------+----------------------------- 1 | 1021.559 19.441 1041.000 2 | 19.441 133.559 153.000

---------------------------------------- Final reclassification probabilities: ------------------------------- original | variable | _Iyear_20 |reclassifed variable 02 | 1 2 Total ----------+-------------------- 1 | 0.981 0.019 1.000 2 | 0.127 0.873 1.000 ------------------------------- invalid syntax r(198);

Dear Statalisters, Seasons Greetings! I run into a problem in my attempting to run perturb for a multinomial logit application; apparently the problem must have something to do with the way I have defined the covariate to be perturbed, as from what I have found setting trace on the application produces an Invalid Syntax Error as it tries to read the number of pfactors defined as perturbation variables, namely n_par in the ado file; the traced problem is as follows: ....output ommitted.. - forval k=1/`niter' { = forval k=1/100 { - forval k=1/`niter' { - forval i=1/`n_pvar' { = forval i=1/ { invalid syntax local pv: word `i' of `pvars' local pr: word `i' of `prange' `how' replace `pv`i'' = `pv'+`perturb'*`pr' } i.e. it does not recognize the number of factors I have input (1), although it has previously produced the initial classification probabilities, adjusted expected table and final reclassification probabilities having recognized that I am using it as factor –see output below. The command I am issuing is as follows: perturb2: mlogit depn defone ldef3 sizmc remc recumz _Iyear_1998 _Iyear_1999 _Iyear_2000 _Iyear_2001 _Iyear_2002 _Iyear_2003 if year>1997? Any help would be greatly appreciated.Dino Konstantaras* * 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: problem with perturb***From:*KONSTANTARAS KONSTANTINOS <dinokon@otenet.gr>

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