Just a thought --
I might normally think that the semicolon appearing after your command
line was the problem
For example, this works --
webuse auto
glm mpg weight, noconstant link(log) fam(gauss) cluster(make)
Iteration 0: log pseudolikelihood = -350.48236
Iteration 1: log pseudolikelihood = -325.12147
Iteration 2: log pseudolikelihood = -307.31936
Iteration 3: log pseudolikelihood = -307.29842
Iteration 4: log pseudolikelihood = -307.29839
Generalized linear models No. of obs =
74
Optimization : ML Residual df =
73
Scale parameter =
240.1084
Deviance = 17527.9143 (1/df) Deviance =
240.1084
Pearson = 17527.9143 (1/df) Pearson =
240.1084
Variance function: V(u) = 1 [Gaussian]
Link function : g(u) = ln(u) [Log]
AIC =
8.332389
Log pseudolikelihood = -307.2983927 BIC =
17213.72
(Std. Err. adjusted for 74 clusters in
make)
------------------------------------------------------------------------------
| Robust
mpg | Coef. Std. Err. z P>|z| [95% Conf.
Interval]
-------------+----------------------------------------------------------------
weight | .0007566 .0000298 25.43 0.000 .0006983
.0008149
------------------------------------------------------------------------------
But this doesn't :
. glm mpg weight, noconstant link(log) fam(gauss) cluster(make);
option ; not allowed
r(198);
But I note that the Stata output here does precisely identify the
problem as the semicolon and this doesn't seem to be the case with your
output. You might want to try taking out the semicolon and -- as Nick
suggests -- send the surrounding code.
david
David J. Miller, Chief
Chemistry & Exposure Branch
Health Effects Division
Office of Pesticide Programs
703-305-5352 (voice)
703 605-1289 (fax)
visit: http://www.epa.gov/pesticides/
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