Dear all,
Now I am working with a panel data to observe whether teacher-school communication can help improve children's academic performance.
When using xtoaxaca, I was bothered by annoying categorical variable.
This is my command:
quietly eststo est1: xtreg stdchn stdcog chnshadow year $xlist ecolevel talkstudy, cluster(ids)
xtoaxaca stdcog chnshadow year $xlist ecolevel talkstudy, groupvar(talkstudy) groupcat(0 1) normalize(ecolevel) timevar(year) times(2014 2015 2016) timeref(2014) timebandwidth(1) model(est1) change(interventionist) forcesample
where ecolevel is a 5-level variable indicatring a family's economic level.
After running, it shows:
ecolevel is not a categorical factor variable. Only categorical factor variables may be specified in normalize().
So where might be the problem? Are there any differences to add categorical factor among command oaxaca, oaxaca_rif and xtoaxaca?
Thanks for help.
Li
Now I am working with a panel data to observe whether teacher-school communication can help improve children's academic performance.
When using xtoaxaca, I was bothered by annoying categorical variable.
This is my command:
quietly eststo est1: xtreg stdchn stdcog chnshadow year $xlist ecolevel talkstudy, cluster(ids)
xtoaxaca stdcog chnshadow year $xlist ecolevel talkstudy, groupvar(talkstudy) groupcat(0 1) normalize(ecolevel) timevar(year) times(2014 2015 2016) timeref(2014) timebandwidth(1) model(est1) change(interventionist) forcesample
where ecolevel is a 5-level variable indicatring a family's economic level.
After running, it shows:
ecolevel is not a categorical factor variable. Only categorical factor variables may be specified in normalize().
So where might be the problem? Are there any differences to add categorical factor among command oaxaca, oaxaca_rif and xtoaxaca?
Thanks for help.
Li
