Liu, Lei; Strawderman, Robert L.; Cowen, Mark E.; Shih, … - In: Journal of Health Economics 29 (2010) 1, pp. 110-123
In this paper, we propose a flexible "two-part" random effects model ([Olsen and Schafer, 2001] and [Tooze et al., 2002]) for correlated medical cost data. Typically, medical cost data are right-skewed, involve a substantial proportion of zero values, and may exhibit heteroscedasticity. In many...