PML model or analysis

[ALKEBSEE RADWAN]

please i need help
how to perform PLM model in stata?

[William Lisowski]

I am not sure what you mean by "PLM model".

There is a PLM package in R with the title "Linear Models for Panel Data" described at https://cran.r-project.org/web/packages/plm/plm.pdf.

If the that is what you seek - linear regression models on panel data - then you want to review the Stata Longitudinal-Data/Panel-Data Reference Manual PDF included in your Stata installation and accessible from Stata's Help menu. The Stata command xtreg described there does a significant amount of what I think the PLM package does.

[ALKEBSEE RADWAN]

yes yes PLM package. i thought it is a model.
do you mean the command xtreg represents this package ?
is not it for firm-fixed effects ?

[William Lisowski]

The xt commands are for much more than just firm fixed effects. Let me quote from page 4 of the documentation I recommended.

Consider having data on n units—individuals, firms, countries, or whatever—over T periods. The data might be income and other characteristics of n persons surveyed each of T years, the output and costs of n firms collected over T months, or the health and behavioral characteristics of n patients collected over T years. In panel datasets, we write x_it for the value of x for unit i at time t. The xt commands assume that such datasets are stored as a sequence of observations on (i, t, x).

[ALKEBSEE RADWAN]

thank you so much