[XT] xtlogit postestimation -- Postestimation tools for xtlogit
Description
The following postestimation commands are available after xtlogit:
Command Description
---------------------------------------------------------------------------------------------------------------------
contrast contrasts and ANOVA-style joint tests of estimates
(1) estat AIC, BIC, VCE, and estimation sample summary
estimates cataloging estimation results
hausman Hausman's specification test
lincom point estimates, standard errors, testing, and inference for linear combinations of coefficients
lrtest likelihood-ratio test
(2) margins marginal means, predictive margins, marginal effects, and average marginal effects
marginsplot graph the results from margins (profile plots, interaction plots, etc.)
nlcom point estimates, standard errors, testing, and inference for nonlinear combinations of coefficients
predict predictions, residuals, influence statistics, and other diagnostic measures
predictnl point estimates, standard errors, testing, and inference for generalized predictions
pwcompare pairwise comparisons of estimates
test Wald tests of simple and composite linear hypotheses
testnl Wald tests of nonlinear hypotheses
---------------------------------------------------------------------------------------------------------------------
(1) estat ic is not appropriate after xtlogit, pa.
(2) The default prediction statistic for xtlogit, fe, pu1, cannot be correctly handled by margins; however, margins
can be used after xtlogit, fe with the predict(pu0) option or the predict(xb) option.
RE_statistic Description
---------------------------------------------------------------------------------------------------------------------
Main
xb linear prediction; the default
pu0 probability of a positive outcome assuming the random effect is zero
stdp standard error of the linear prediction
---------------------------------------------------------------------------------------------------------------------
FE_statistic Description
---------------------------------------------------------------------------------------------------------------------
Main
pc1 probability of a positive outcome conditional on one positive outcome within group; the default
pu0 probability of a positive outcome assuming the fixed effect is zero
xb linear prediction
stdp standard error of the linear prediction
---------------------------------------------------------------------------------------------------------------------
PA_statistic Description
---------------------------------------------------------------------------------------------------------------------
Main
mu probability of depvar; considers the offset()
rate probability of depvar
xb linear prediction
stdp standard error of the linear prediction
score first derivative of the log likelihood with respect to xb
---------------------------------------------------------------------------------------------------------------------
These statistics are available both in and out of sample; type predict ... if e(sample) ... if wanted only for the
estimation sample.
The predicted probability for the fixed-effects model is conditional on there being only one outcome per group. See
[R] clogit for details.