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Re: st: propensity score problem
From
[email protected] (Brendan Halpin)
To
[email protected]
Subject
Re: st: propensity score problem
Date
Fri, 16 Mar 2012 13:12:30 +0000
On Fri, Mar 16 2012, Nick Cox wrote:
> From: CARLOS MAGNO SANTOS CLEMENTE [mailto:[email protected]]
> Estimation of the propensity score
>
> outcome does not vary, remember:
> 0 = negative outcome,
> All Other nonmissing values = positive outcome
> r (2000);
The unnamed propensity score program is probably failing to fit a probit
or logit on the propensity to be treated, where the dependent variable
is the treatment. This variable must be 0/non-zero; the error is the
usual one seen when logit or probit is fed a dependent which doesn't
have zero values.
Generate a treatement variable that is 1 if treated and zero otherwise.
Brendan
--
Brendan Halpin, Department of Sociology, University of Limerick, Ireland
Tel: w +353-61-213147 f +353-61-202569 h +353-61-338562; Room F1-009 x 3147
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