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help for ^xtrchh^                                                  (STB-33: sg62)
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Hildreth-Houck Random coefficients regression for panel data
------------------------------------------------------------

	^xtrchh^  depvar [varlist] [^if^ exp] [^in^ range] [^, l^evel^(^#^)^ ^i(^varname^)^ 
		^t(^varname^)^ ]

^xtrchh^ shares the features of all estimation commands; see help @est@.

^xtrchh^, typed without arguments, redisplays previous estimates.

To reset problem-size limits, see help @matsize@.


Description
-----------

If you have not read help for @xt@, please do so now.

^xtrchh^ estimates random coefficients regression models for panel data.

		y[i,t] = a + B*x[i,t] + u[i] + e[i,t]

                i = 1, 2, ..., n   is the groups (or items)
                t = 1, 2, ..., T_i is the time for group i 

Included in the output is the results of a test of parameter constancy.

Options
-------

^level(^#^)^ specifies the significance level, in percent, for confidence intervals
    of the coefficients; see help @level@.

^i(^varname^)^ specifies the variable name corresponding to i; see help @xt@.

^t(^varname^)^ specifies the variable name corresponding to t; see help @xt@.

^nocons^ requests that a model be fit without a constant term.


Examples
--------

        . ^xtrchh i f c, i(group) t(year)^

        . ^xtrchh i f c, i(group) t(year) nocons^

Also see
--------

    STB: STB-33, sg62
On-line: help for @xt@, @xtdata@, @xtdes@, @xtsum@, @xttab@; @est@; @correlate@, @test@
          @xtreg@

Author
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    James W. Hardin
    Stata Corporation
    jwh@@stata.com