clive,
Change the -ml model- statement to:
ml model lf mlbeta_ll (`lhs'=`rhs', `nocons') (`dispersion') `if'
`in', `robust' `svy'
Example:
. sysuse auto, clear
(1978 Automobile Data)
. qui sum mpg
. gen m2 = mpg/(r(max)+1)
. mlbeta m2 trunk gear, nocons
Number of obs
= 74
Wald chi2(2)
= 44.06
Log likelihood = 54.205681 Prob > chi2
= 0.0000
-----------------------------------------------------------------------
-------
m2 | Coef. Std. Err. z P>|z| [95% Conf.
Interval]
-------------+---------------------------------------------------------
-------
eq1 |
trunk | -.0662481 .0104036 -6.37 0.000 -.0866388 -
.0458574
gear_ratio | .3262698 .0493823 6.61
0.000 .2294823 .4230573
-------------+---------------------------------------------------------
-------
eq2 |
_cons | 2.81053 .1598448 17.58 0.000 2.49724
3.12382
-----------------------------------------------------------------------
-------
Mean squared error:.01030075
Scott
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