Econometrics or Stats - Stata question (free software for R: https://www.r-project.org/)

The productivity of a scholar is often judged by the number of articles he or she publishes in scholarly journals. This productivity may be affected by factors, such as sex, marital status, number of young children, prestige of the graduate program and the number of articles published by the scholar's mentor.

Since the 'number of articles published' is a finite number, with many scholars producing a small number of articles and a few publishing a relatively large number of articles, we could specify the 'number of articles published' using the following Poisson regression model: