A discrete random effects probit model with application to the demand for preventive care

I have developed a random effects probit model in which the distribution of the random intercept is approximated by a discrete density. Monte Carlo re sults show that only three to four points of support are required for the d iscrete density to closely mimic normal and chi-squared densities and provi de unbiased estimates of the structural parameters and the variance of the random intercept. The empirical application shows that both observed family characteristics and unobserved family-level heterogeneity are important de terminants of the demand for preventive care. Copyright (C) 2001 John Wiley & Sons, Ltd.