JOURNAL ARTICLE

Bivariate Zero-Inflated Negative Binomial Regression Model with Heterogeneous Dispersions

Dong‐Seok KimSeul-Gi JeongDong‐Hee Lee

Year: 2011 Journal:   Communications for Statistical Applications and Methods Vol: 18 (5)Pages: 571-579   Publisher: Korean Statistical Society

Abstract

본 연구에서는 두 반응 변수에 서로 다른 산포를 허용하는 새로운 이변량 영과잉 음이항 회귀모형을 제안하고, Deb과 Trivedi (1997)에 나타난 헬스케어 자료를 이용하여 두 반응변수가 갖는 서로 다른 산포도를 무시한 Wang (2003)이 제안한 이변량 영과잉 음이항 회귀모형과의 효율성을 로그우도와 AIC의 관점에서 비교 하였다. 모형적합결과, 본 연구에서 제안한 모형이 모형선택기준 관점에서 기존모형에 비하여 월등히 우수한 결과를 보여주었다. We propose a new bivariate zero-inflated negative binomial regression model to allow heterogeneous dispersions. To show the performance of our proposed model, Health Care data in Deb and Trivedi (1997) are used to compare it with the other bivariate zero-inflated negative binomial model proposed by Wang (2003) that has a common dispersion between the two response variables. This empirical study shows better results from the views of log-likelihood and AIC.

Keywords:
Bivariate analysis Negative binomial distribution Mathematics Statistics Count data Econometrics Regression analysis Overdispersion Dispersion (optics) Zero (linguistics) Binomial regression Poisson distribution

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Topics

Statistical Distribution Estimation and Applications
Physical Sciences →  Mathematics →  Statistics and Probability
Survey Sampling and Estimation Techniques
Physical Sciences →  Mathematics →  Statistics and Probability
Statistical Methods and Bayesian Inference
Physical Sciences →  Mathematics →  Statistics and Probability

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