Patterns of Medication Initiation in Newly Diagnosed Diabetes Mellitus: Quality and Cost Implications Nihar R. Desai, MD, MPH, William H. Shrank, MD, MSHS, Michael A. Fischer, MD, MS, Jerry Avorn, MD, Joshua N. Liberman, PhD, Sebastian Schneeweiss, MD, ScD, Juliana Pakes, MEd, Troyen A. Brennan, MD, JD, MPH, Niteesh K. Choudhry, MD, PhD Divisions of Pharmacoepidemiology and Pharmacoeconomics an...

This article uses a discrete choice, random coefficients logit model for analyzing consumer behavior and retail price competition in the Boston fluid milk market. The problems of product dimensionality and consumer heterogeneity implied by imperfect substitution in markets with differentiated products were solved by applying the model of Berry, Levinhson and Pakes (1995). Empirical results show...

Wolbachia is an endosymbiont of diverse arthropod lineages that can induce various alterations of host reproduction for its own benefice. Cytoplasmic incompatibility (CI) is the most common phenomenon, which results in embryonic lethality when males that bear Wolbachia are mated with females that do not. In the cherry fruit fly, Rhagoletis cerasi, Wolbachia seems to be responsible for previousl...

We apply Berry, Levinsohn and Pakes (1995) to jointly estimate demand and cost parameters for all 178 brands (products) in Retail Carbonated Soft Drinks over 28 bi-monthly periods. Our innovation is to randomize over store coverage (weighted by store size) to create a distribution of consumers’ taste for location convenience to each brand. Such distributions and their interaction with price ent...

Two concepts of symmetry for the distributions of positive random variables Y are log-symmetry (symmetry of the distribution of log Y ) and Rsymmetry (Mudholkar & Wang, 2007). In this paper, we characterise the distributions that have both properties, which we call doubly symmetric. It turns out that doubly symmetric distributions constitute a subset of those distributions that are moment-equiv...

∗Data for this research was generously provided by Millennium Research Group (www.mrg.net). Many thanks to Adam Brandenburger, Ali Yurukoglu, Allan Collard-Wexler, Ariel Pakes, Catherine de Fontenay, Gus Stuart, Hong Luo, John Asker, Lúıs Cabral, Melissa Schilling, Michael Katz, and seminar audiences at NYU Stern’s Management Student Brownbag, NYU Stern NASS, and NYU GSAS Microeconomics Student...

Abstract: Two concepts of symmetry for the distributions of positive random variables Y are log-symmetry (symmetry of the distribution of log Y ) and R-symmetry ([7]). In this paper, we characterise the distributions that have both properties, which we call doubly symmetric. It turns out that doubly symmetric distributions constitute a subset of those distributions that are moment-equivalent to...

in the past three decades afghanistan has faced many crises such as lack of central government authority, foreign invasion to the country and internal conflict between governments which have led to bas mental health and health conditions. even some psychiatric centers and activities in the area of psychiatry and mental health that were established and started activity with the help of who were ...

The CPI component indices are obtained from comparing price quotes at a given store in different periods. If we omit comparisons from goods in the store in the initial, but not in the comparison, period we generate a selection bias: goods that exit are disproportionately obsolete goods that have falling prices. Building on Pakes (2003), we explain why standard hedonic predictions for second-per...

Roscoe recently showed how HISPs, a class of protocol to allow humans to contribute to the creation of secure authentic channels between them, can be made auditable in the sense that a failed attack on them cannot be disguised as communication failure. In this paper we study the same issue for PAKEs: password authenticated key exchanges. We find that because this second style of protocol relies...