st: Pscores: Interpretation of results

[Duru <duru80@gmail.com>]

Hi all,

Sorry for the previous mail.

I have estimated propensity scores for being reached on a mobile phone
in a telephone survey for five countries (using pscore in Stata).
There was good overlap in each country. Yet, pscores for some
countries ranged between .1-.4 while some other countries it was
.1-.8, for both control (landline respondents) and the treatment
(mobile respondents) groups. I used the same number of covariates in
each country, and the sample size of the treatment group was smaller
in those countries with lower propensity scores. Any ideas, how we
explain lower/higher propensity scores across countries? Sample size
and number of covariates?

Thanks,

Duru
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