Dear Statalist,
I have a model with one self-assessment question and two vignettes. Following Rabe-Hesketh and Scrondal (2002), I use the following command:
This is working perfectly. I now want to get the DIF-corrected self-assessment from the model and I am not sure if I am doing it correctly with:
Would somebody know if this is correct?
And a less important question, but maybe of interest to others as well: would the new irt model in Stata14 also be an option here?
Thank you,
Mathilde van Dijk
Reference:
Rabe-Hesketh, S., & Skrondal, A. (2002). Estimating CHOPIT models in GLLAMM: political efficacy example from King et al.(2002). London: Institute of Psychiatry, King's College.
I have a model with one self-assessment question and two vignettes. Following Rabe-Hesketh and Scrondal (2002), I use the following command:
Code:
gen vign = 1-self order id item i1 i2 self vign xsay_a eq het: vign self eq thresh: $demo cons def 1 [lns1]self=0 gllamm xsay_a i1 i2 $s_demo, /* */ i(id) link(soprobit) s(het) ethresh(thresh) constr(1) /* */ init
Code:
gllapred lp1, linpred
And a less important question, but maybe of interest to others as well: would the new irt model in Stata14 also be an option here?
Thank you,
Mathilde van Dijk
Reference:
Rabe-Hesketh, S., & Skrondal, A. (2002). Estimating CHOPIT models in GLLAMM: political efficacy example from King et al.(2002). London: Institute of Psychiatry, King's College.
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