We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Disaggregate Negative Binomial Regression Procedure for Count Data Analysis.
- Authors
Ramaswamy, Venkatram; Anderson, Eugene W.; DeSarbo, Wayne S.
- Abstract
Various research areas face the methodological problems presented by nonnegative integer count data drawn from heterogeneous populations. We present a disaggregate negative binomial regression procedure for analysis of count data observed for a heterogeneous sample of cross-sections, possibly over some fixed time periods. This procedure simultaneously pools or groups cross-sections while estimating a separate negative binomial regression model for each group. An E-M algorithm is described within a maximum likelihood framework to estimate the group proportions, the group-specific regression coefficients, and the degree of overdispersion in event rates within each derived group. The proposed procedure is illustrated with count data entailing nonnegative integer counts of purchases (events) for a frequently bought consumer good.
- Subjects
REGRESSION analysis; NEGATIVE binomial distribution; DATA analysis; STOCHASTIC processes; ALGORITHMS; MAXIMUM likelihood statistics; MANAGEMENT science; CONSUMER goods; MATHEMATICAL models
- Publication
Management Science, 1994, Vol 40, Issue 3, p405
- ISSN
0025-1909
- Publication type
Article
- DOI
10.1287/mnsc.40.3.405