There is a common perception that healthy food costs more than less healthy food. In this study we use a demand model for diet quality, rather than the quantity of food. Since in our data, total daily cost and diet quality are both calculated from the foods chosen, we account for the fact that...

Conventional growth theories in the literature explain the poor economic performance of African economies by stressing the inadequacy of savings, human capital, and poor institutional quality. However, the key question is how to enhance savings for the accumulation of both physical and human...

This paper proposes a new estimator for cross section semiparametric regressions containing an unobserved binary random effect and applies it to alcohol consumption. The unobserved random effect (health-consciousness) explains a significant proportion of the otherwise unexplained variation in...

A general formulation of Mixed Proportional Hazard models with K random effects is provided. It enables to account for a population stratified at K different levels. We then show how to approximate the partial maximum likelihood estimator using an EM algorithm. In a Monte Carlo study, the...

We present an approach for analyzing market shares and products price elasticities based on large datasets containing aggregate sales data for many products, several markets and for relatively long time periods. We consider the recently proposed Bayesian approach of Jiang et al [Jiang, Renna,...