Re: st: hireg help

[Richard Williams <Richard.A.Williams.5@ND.edu>]

At 10:15 AM 5/18/2007, Austin Nichols wrote:

> After a quick look, -hireg- seems to have some minor mistakes in the
> code--e.g. it reports obs not used when option -nomiss- is specified
> without reference to [if] and [in] restrictions--but I cannot easily
> see the source of your reported error.
After fiddling around I think I see the problem.  I created some fake 
data and Megan's command worked fine in Stata 9.2 but I replicated 
her problem in Stata 8.2.  It turns out that in Stata 9.2., string 
expressions can be 244 characters long, but in some versions of 8.2 
they can only be 80 characters long.  Megan's independent variable 
list was therefore getting truncated just before she got to the last 
3 vars.  The fact that "ortho" was included twice in her var list 
didn't help any either.

One solution would be to use Austin's hireg2, and another would be to 
shorten the variable names.  If you want to patch a copy of the 
original hireg (rename it hireg2 or something like that like Austin 
did), I think all you need to do is look for the lines

local v = "`v' `1'"
local vn = "`1'"
local vv = "`vv',`vn'"
local vl = " `vl' `1'"

and delete the equals signs, i.e. change the lines to

local v "`v' `1'"
local vn "`1'"
local vv "`vv',`vn'"
local vl " `vl' `1'"

Incidentally, I would always use the nomiss option with 
hireg.  Otherwise you could be comparing models estimated with different cases.

I don't know if Paul Bern is on Statalist.  I'll try to email him about this.


-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
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EMAIL:  Richard.A.Williams.5@ND.Edu
WWW:    http://www.nd.edu/~rwilliam

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