Thanks Rafa that is very helpful.
Hema
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of R.E. De Hoyos
Sent: 21 April 2006 19:30
To: [email protected]
Subject: Re: st: Methods for selection bias
If you are interested in selection bias, you cannot avoid reading Heckman:
Heckman, J. (1979) `Sample selection bias as a
specification error', Econometrica, vol. 47, 1.
Heckman, J. (1990) `Varieties of selection bias',
The American Economic Review, vol. 80, 2.
Carneiro, Hansen and Heckman (2003), `Estimating...', International
Economic Review, May, Vol. 44, No.2
Rafa
----- Original Message -----
From: "Anders Alexandersson" <[email protected]>
To: <[email protected]>
Sent: Friday, April 21, 2006 2:45 PM
Subject: Re: st: Methods for selection bias
>I would consider -permute- for permutation tests based on Monte Carlo
> simulations. What assumptions can you make, e.g., do you have
> independent samples (i.e. unmatched data)?
>
> Anders Alexandersson
> [email protected]
>
> Privately, Hema replied:
>> The "non-randomised data" refers to both the sample and the treatment
>> assignment.
>
> On 4/20/06, Anders Alexandersson <[email protected]> wrote:
>> Does "non-randomised data" here refer to the sample and/or to the
>> treatment assignment?
>>
>> On 4/20/06, Hema Mistry <[email protected]> wrote:
>>
>> > I was wondering whether you can provide me with some advice or point me
>> > in the right
>> > direction. I am trying to find methods which can deal with data that
>> > is non-randomised
>> > and suffers from selection bias. After searching various databases etc
>> > I have come up
>> > with the following methods:
>> > 1) Regression analyses
>> > 2) Propensity score - matching, stratification, regression,
>> > classification trees
>> > 3) Instrumental variables
>> > 4) Sample selection models
>> > 5) Two-part models
>> > 6) Inverse probability weighting
>> >
>> > Before I start using these methods in various datasets I was just
>> > wondering whether
>> > users are aware of any other methods which I have not identified?
>> > Can you recommend any good text books or key people that maybe I should
>> > contact?
>
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