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From |
rgutierrez@stata.com (Roberto G. Gutierrez, StataCorp) |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Problem with xtmixed |

Date |
Wed, 04 Jun 2008 12:05:15 -0500 |

SamL <saml@demog.berkeley.edu> writes: > I have wondered about the way in which xtmixed seems not to match the syntax > of other multi-equation commands with which I am familiar. I am thinking of > heckman, sureg, and other such commands as examples. > I have wondered whether xtmixed matches the syntax of other multi-equation > commands with which I am not familiar. If not, I have wondered whether there > is any way xtmixed could be written so that the syntax matched some of the > other multi-equation commands in stata. > So, asking explicitly: Could xtmixed be written so that the syntax matched > some of the other multi-equation commands in stata? -xtmixed- does support "standard" multi-equation syntax. For example, . xtmixed (weight week) (id: week) is equivalent to . xtmixed weight week || id: week See the technical note on page 303 of [XT] xtmixed (Stata 10). There it states that, although both syntaxes are supported, the latter is predominant to emphasize the multiLEVEL aspect of the model rather than the multiEQUATION aspect. But you still need to colon after the level identifier. --Bobby rgutierrez@stata.com * * 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/

**Follow-Ups**:**Re: st: Problem with xtmixed***From:*SamL <saml@demog.berkeley.edu>

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