References/Notes/Attributions:
Source
German Socio-Economic Panel (SOEP), 1995 pre-reform; 1998 post reform. Created by Rabe-Hesketh and Skrondal (2005).
References
Hilbe, Joseph M (2007, 2011), Negative Binomial Regression, Cambridge University Press Hilbe, Joseph M (2009), Logistic Regression Models, Chapman & Hall/CRC Rabe-Hesketh, S. and A. Skrondal (2005). Multilevel and Longitudinal Modeling Using Stata, College Station: Stata Press.