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Re: st: slopes as outcomes?


From   Jeph Herrin <junk@spandrel.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: slopes as outcomes?
Date   Wed, 15 Nov 2006 21:44:04 -0500

Sam,

Your second model is handled by -xtmixed- in a straightforward way:

 xtmixed x1 x2 z1 || j:

-xtmixed- will figure out that z1 is a second level variable.

However, your first model I think is beyond -xtmixed-, because
it includes a term of the form u*x1.

hth,
Jeph


SamL wrote:
I've attempted to figure out how to specify a slopes-as-outcomes
multilevel model using _xtmixed- and at this point I am swirling in
confusion.  I have checked statalist and the manual, and cannot find an
example that I am confident matches my aim.  So, if my data has persons
(i) nested within univerities (j), and Model 1, a 2-equation model I seek
to estimate, is:

Y_ij = b0 + b1_j*X1_ij + b2*X2_ij + e_ij
b0 = g00
b1_j = g10 + g11*Z1_j + u1_j
b2 = g20

what would be the appropriate syntax?  And, if Model 2 has a slightly
different specification:

Y_ij = b0_j + b1*X1_ij + b2*X2_ij + e_ij
b0 = g00 + g01*Z1_j + u0_j
b1 = g10
b2 = g20

what would be the appropriate syntax?

I appreciate any assistance you can provide.

Thanks a bunch.
Sam
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