th ffirst in ivreg2 - Statalist Hello, I am trying to get the first stage regression results but when I add the ffirst oprion to the ivreg 2 command I get this output Unable to display
Finding the _b [coefficient] from the first-stage of ivreg2 The savefirst option requests that the individual first-stage regressions be saved for later access using the estimates command If saved, they can also be displayed using first or ffirst and the ivreg2 replay syntax The regressions are saved with the prefix "_ivreg2_", unless the user specifies an alternative prefix with the savefprefix (prefix) option The savesfirst and savesfprefix
Instrumental Variable (2SLS) First stage different sample . . . - Statalist This leads to approximately 13000 observations in the first stage and the second stage First stage and second stage coefficients seem reasonable Now, I received a comment that this is not the correct way to approach the Instrumental variable estimation The comment says that I should run the First Stage regression on the country level only because X and Z only vary at this level This would
how to use -ffirst- in -reghdfe- - Statalist Hello, Dear Statalists Anyone know how to use "ffirst" to report first stage estimates of 2SLS in -reghdfe-? where to put in the code I looked it
What exists in e (first) at what position after ivreg2 ? - Statalist Code: sysuse auto ivreghdfe price weight (length turn=gear_ratio displacement), ffirst mat FIRST=e (first) estadd scalar fstat=FIRST [1,1] But how can I know at which point what exists? That is, how can I tell whether to do FIRST [2,1] or FIRST [3,1]? You can view the matrix or refer to its specific elements
ivreg2 first stage results - Statalist It is strange that you are supposed to get the first-stage results by adding the "ffirst" option The example below shows the first-stage outcomes as expected
ivreg2, GMM Distance Test being the difference between two Hansen . . . Here I specify the -endog- option to test whether the included endogenous regressor (avexpr) is actually endogenous The C statistic = 22 342 and the J statistic for this model is 2 015 This should be the difference between J statistic of the model above (2 015) and that of the model where avexpr is treated as exogenous (the restricted model) This means that the J statistic of the restricted