PT  - JOURNAL ARTICLE
AU  - Hynes, Stephen
AU  - Greene, William
TI  - A Panel Travel Cost Model Accounting for Endogenous Stratification and Truncation: A Latent Class Approach
AID  - 10.3368/le.89.1.177
DP  - 2013 Feb 01
TA  - Land Economics
PG  - 177--192
VI  - 89
IP  - 1
4099  - http://le.uwpress.org/content/89/1/177.short
4100  - http://le.uwpress.org/content/89/1/177.full
SO  - Land Econ2013 Feb 01; 89
AB  - In this paper, we develop a panel data negative binomial count model that corrects for endogenous stratification and truncation. We also incorporate a latent class structure into our panel specification, which assumes that the observations are drawn from a finite number of segments, where the distributions differ in the intercept and the coefficients of the explanatory variables. The paper argues that count data panel models corrected for on-site sampling may still be inadequate and potentially misleading if the population of interest is heterogeneous with respect to the impact of the chosen explanatory variables. (JEL Q51, Q57)