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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: Re: Question about Stata |

Date |
Fri, 20 Mar 2009 12:24:00 -0000 |

Neither the original author nor the reviser of -dtobit- now works for StataCorp. That's just factual information; it's not for me to say what it does or does not imply. What's key, however, is that -dtobit- was never part of official Stata. It remains a user-written program whose author and then reviser happened also to work for StataCorp (as it now is). Thus, contrary to some statements, there is no question of suppressing or discontinuing it. It will remain archived and accessible and downloadable in STB/SJ archives indefinitely. Nick n.j.cox@durham.ac.uk Kit Baum Mykhailo, I cannot test the capabilities of -dtobit- because that routine (updated for sg144_1, from SJ 4:3) does not run the example in its help file: . tobit mpg trunk weight, ll(17) Tobit regression Number of obs = 74 LR chi2(2) = 73.86 Prob > chi2 = 0.0000 Log likelihood = -163.74787 Pseudo R2 = 0.1840 ------------------------------------------------------------------------ ------ mpg | Coef. Std. Err. t P>|t| [95% Conf. Interval] ------------- +---------------------------------------------------------------- trunk | -.1487203 .1477163 -1.01 0.317 -. 4431875 .1457468 weight | -.0063328 .0008709 -7.27 0.000 -.008069 -.0045966 _cons | 41.90603 2.094632 20.01 0.000 37.73045 46.0816 ------------- +---------------------------------------------------------------- /sigma | 3.822488 .3637359 3.097394 4.547582 ------------------------------------------------------------------------ ------ Obs. summary: 18 left-censored observations at mpg<=17 56 uncensored observations 0 right-censored observations . dtobit [_se] not found r(111); Apparently some changes made to -tobit- have broken -dtobit-. However I would wonder whether you can what you need with the various options available on -mfx-, see -help tobit postestimation-. The default output provides . mfx Marginal effects after tobit y = Fitted values (predict) = 20.738523 ------------------------------------------------------------------------ ------ variable | dy/dx Std. Err. z P>|z| [ 95% C.I. ] X --------- +-------------------------------------------------------------------- trunk | -.1487203 .14772 -1.01 0.314 -.438239 . 140798 13.7568 weight | -.0063328 .00087 -7.27 0.000 -.00804 -. 004626 3019.46 ------------------------------------------------------------------------ ------ and other options are available. -mfx- saves everything it produces, and those matrices can be added to -estimates- and output with - esttab- or other table-making programs. Presumably someone from StataCorp will have a look at -dtobit-, as it was written and modified by StataCorp employees (but is not part of official Stata). On Mar 20, 2009, at 24:42 , msyrotenko wrote: > I am working with dtobit command to receive the marginal effects. > > . dtobit, brief > ------------------------------------------------------------------------ ------ > | Marginal Effects at Means > > |-------------------------------------------------------------------- > | Latent Unconditional Conditional > on Probability > Name | Variable Expected Value being Uncensored > Uncensored > --------- > +-------------------------------------------------------------------- > l_gdp | 2.1510068 .03051076 . > 22277649 .00370306 > l_dist | -11.960954 -.16965905 -1.2387778 > -.02059134 > dev*| -.95325248 -.01298252 -.09792999 -. > 00158439 > --------- > +-------------------------------------------------------------------- > (*) dF/dx is for discrete change of dummy variable from 0 to 1 > > Now I would like to extract the columns of this table separately > (Latent variable, Unconditional expected value; Conditional expected > Value, Probability Uncensored) Than I would like receive the general > table for different regressions but sepparately for: Latent > variable, Unconditional expected value, Conditional expected Value, > Probability Uncensored. > > using command "estimates store" a few times > and then esttab I receive the table only for Latent variable(first > column). > So "estimates store extract" only first column of the initial table > Is it possible to extract other than first column of the initial > table? > What command can help me for this purpose? > * * 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: Re: Question about Stata***From:*Kit Baum <baum@bc.edu>

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