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From |
SamL <saml@demog.berkeley.edu> |

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

Subject |
st: Second Repost "Simple Cases of Multi-Level Models" |

Date |
Mon, 10 Jun 2002 06:45:01 -0700 (PDT) |

My question concerns the XT series of models in STATA. My question is whether the XT series allows one to treat second-level variation as something to study, rather than simply as a nuisance to be controlled. Given my interest in the former, I read with interest the presentation/paper titled "Simple Cases of Multi-Level Models" by Richard Goldstein at a STATA Users Group Conference, which seemed to suggest that the XT series may meet my needs. I presume attending would have clarified my question, but given that I was not there I have a question. My question probably flows from the many different meanings that are floating around for the terms that are in use in different disciplines. I am specifically interested in the statement on a slide from the talk, that reads "I know that the following is true for at least some of the XT models and I believe it is true for all of them: they can be used to analyze any two-level random intercept model." My aim is to estimate a model of the following form: Pr(Y_ij=1) = b1_j White1_ij + b2_j Black1_ij + b3 X1_ij + b4 X2_ij + e_ij b1_j = g01 + g11 Z1_j + g21 Z2_j + d1 b2_j = g02 + g12 Z1_j + g22 Z2_j + d2 b3_j = g03 b4_j = g04 In this model the Zs are measured at the higher level; there are a few dozen higher-level entities and lots and lots of lower-level units. The aim is to estimate the "effect" of Zs on the black and white intercepts. That's the set-up. The questions: can this be estimated using the "XT" models in STATA? And, if so, how? Thanks for any references to GLLAMM, but I am familiar with GLLAMM. Any insights on this in terms of the XT series of models are greatly appreciated. Thanks a bunch. Sam * * 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: Second Repost "Simple Cases of Multi-Level Models"***From:*Richard Goldstein <richgold@ix.netcom.com>

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