Σύγκριση μεθόδων

	Παλινδρόμηση Poisson και Αρνητική Διωνυμική	Μοντέλο Σταθερών Επιπτώσεων Δεδομένων Πάνελ
Πεδίο	Οικονομετρία	Οικονομετρία
Οικογένεια	Regression model	Regression model
Έτος προέλευσης	1998	2014
Δημιουργός	Cameron & Trivedi (textbook treatment); Hilbe (negative binomial)	Hsiao (textbook treatment); within transformation of panel data
Τύπος	Generalized linear model for count data	Panel data regression
Θεμελιώδης πηγή	Cameron, A. C. & Trivedi, P. K. (1998). Regression Analysis of Count Data. Cambridge University Press.	Hsiao, C. (2014). Analysis of Panel Data (3rd ed.). Cambridge University Press.
Εναλλακτικές ονομασίες	count regression, log-linear count model, negative binomial regression, Poisson / Negatif Binom Regresyon	fixed effects model, within estimator, panel fixed-effects regression, Panel Veri — Sabit Etkiler Modeli
Συναφείς	4	5
Σύνοψη	Poisson regression is a generalized linear model for count outcomes — events tallied as non-negative integers such as hospital admissions, accidents, or article counts. It models the log of the expected count as a linear function of the predictors, and is developed in the standard count-data treatment of Cameron and Trivedi (1998); when the counts are over-dispersed, the closely related negative binomial model (Hilbe, 2011) is preferred.	The Panel Data Fixed Effects model estimates relationships from panel data (the same units observed over several time periods) while controlling for unit- and/or time-specific effects, supporting causal inference. It is developed as the within estimator in standard treatments such as Hsiao's Analysis of Panel Data (2014).