Ye, Fei; Yue, Chen; Yang, Ying - In: Computational Statistics & Data Analysis 58 (2013) C, pp. 257-264
Poisson regression is important in the analysis of longitudinal count data. However, the variance of responses is often much greater than the sample mean in practice, contradicting the Poisson model. To solve this overdispersion problem, negative binomial regression model was introduced by...