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RE: st: xttobit with multiple upper limits
I would imagine that you cannot have many ul variables. But you could have one variable with different values for each group.
e.g.
Treat_group UL
-----------------------------
1 ul1
1 ul1
2 ul2
2 ul2
2 ul2
3 ul3
3 ul3
3 ul3
4 ul4
4 ul4
Cheers
Manos
________________________________
From: [email protected] on behalf of Andrea Kutinova
Sent: Fri 2/1/2008 4:06 AM
To: [email protected]
Subject: RE: st: xttobit with multiple upper limits
Thank you Scott! Can I use a list of variables such as ul(tr1 tr2
tr3...), where tr1 is a binary variable indicating membership in
treatment group 1, tr2 a binary variable indicating membership in
treatment group 2, etc.? What I want to achieve is: if tr1 = 1 then use
ul(0), if tr2 = 1 then use ul(10) etc.
Your help is much appreciated,
Andrea
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Scott
Merryman
Sent: Friday, 1 February 2008 4:28 p.m.
To: [email protected]
Subject: Re: st: xttobit with multiple upper limits
In -xttobit- the censoring limit can be a variable.
Scott
On Jan 31, 2008 9:13 PM, Andrea Kutinova
<[email protected]> wrote:
> Dear Stata users,
>
> I'm estimating an xttobit model with multiple treatment groups and the
> dependent variable has a different upper bound for each treatment
group.
> Is there a way to allow for different ul() by treatment group
> membership?
>
> I'd appreciate your suggestions very much!
> Andrea
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