Dear all
I�m estimating a biprobit to my child labor problem:
1. Child just study
2. Child study and work
3. Child just work
4. Child neither study or work
So the first probit is regarding to Study: 1 if child study and zero
otherwise. The second probit refers to work probability: 1 if child work and
zero if doesn�t.
My problem occours when I want to get the marginal effects of the two
equation and all the 4 output probabilities (p11, p10, p01, p00). When I
type the command "mfx" after the estimation I get the marginal effects but
just for the default probability (p11). As show the table below.
I already tried "mfx, predict p10", and all kinds of possible combination,
but it didi not work....
Does some one knows how can I get the same marginal effects and estimate
probability for all possible combinations, and not just for p11?
Thanks for the help, natalia
Marginal effects after biprobit
y = Pr(bi_prob1=1,bi_prob2=1) (predict)
= .01582596
variable dy/dx Std. Err. z P>z [ 95% C.I. ] X
id_f .0112753 .00026 43.61 0.000 .010769 .011782
11.9961
f_cor* .0003155 .00076 0.42 0.677 -.001167 .001798
.290431
novo .0034677 .00031 11.22 0.000 .002862 .004074
.904704
velho .0015147 .00051 3.00 0.003 .000525 .002505
.549959
edu_r -.0012177 .00011 -10.91 0.000 -.001437 -.000999
6.91298
edu_c -.0010851 .00012 -9.37 0.000 -.001312 -.000858 6
.73947
migint_r* .0062618 .00259 2.42 0.016 .00119 .011333
.079524
migint_c* -.0033373 .0017 -1.96 0.050 -.00667 -4.5e-06
.08513
nrpc_sm .0030452 .00017 18.18 0.000 .002717 .003374
5.18521
(*) dy/dx is for discrete change of dummy variable from 0 to 1
_________________________________________________________________
MSN Messenger: instale gr�tis e converse com seus amigos.
http://messenger.msn.com.br
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
