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From |
"Peter Siminski" <p.siminski@student.unsw.edu.au> |

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

Subject |
RE: st: missing t statistics |

Date |
Fri, 19 Oct 2007 20:00:48 +1000 |

This previous post seems relevant here, the upshot is to use the bootstrap: http://www.stata.com/statalist/archive/2003-02/msg00869.html -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Ronan Conroy Sent: Friday, 19 October 2007 7:11 PM To: statalist@hsphsun2.harvard.edu Subject: Re: st: missing t statistics This looks like very strange data indeed - those standard errors are minute. dividing the coefficient by its standard error is going to result in a number of the sort studied by the late Professor Hubert Mungus - a humungus quantity. Have a look at your data - maybe the explanation lies there. On 19 Oct 2007, at 02:20, Yun Liu wrote: > Hi, Stata users, > > I am running median regressions. Sometimes stata reports estimated > coefficients, standard errors and confidence intervals, but the t > statistics turn out to be missing. Could someone please tell me what > this means? Thank you! Below is an example: > > qreg chgcomp swf swm swmcdftenure swfcdf* i.ind > > Median regression Number of obs > = 528 > Raw sum of deviations 2.22e+07 (about 6806.4399) > Min sum of deviations 1.74e+07 Pseudo R2 > = 0.2164 > > ---------------------------------------------------------------------- > -------- > chgcomp | Coef. Std. Err. t P>|t| [95% > Conf. Interval] > ------------- > +---------------------------------------------------------------- > swf | 44.91122 .0000596 . 0.000 > 44.91111 44.91134 > swm | -1.589599 4.38e-06 . 0.000 > -1.589608 -1.589591 P Before printing, think about the environment ================================= Ronan Conroy rconroy@rcsi.ie Royal College of Surgeons in Ireland Epidemiology Department, 120 St Stephen's Green, Dublin 2, Ireland +353 (0)1 402 2431 +353 (0)87 799 97 95 http://www.flickr.com/photos/ronanconroy/sets/72157601895416740/ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: missing t statistics***From:*"Yun Liu" <liuyun3@gmail.com>

**Re: st: missing t statistics***From:*Ronan Conroy <rconroy@rcsi.ie>

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