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Jay Bhattacharya
Journal Articles

Social Isolation and Medicare Spending: Among Older Adults, Objective Isolation Increases Expenditures While Loneliness Does Not

Jonathan Shaw, Monica Farid, Claire Noel-Miller, Neesha Joseph, Ari Houser, Steven M. Asch, Jay Bhattacharya, Lynda Flowers
SAGE Journals , 2017

Objective: The purpose of this study was to evaluate the impact of objective isolation and loneliness on Medicare spending and outcomes. Method: We linked Health and Retirement Study data to Medicare claims to analyze objective isolation (scaled composite of

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Working Papers

Technological Progress and Health Convergence: The Case of Penicillin in Post-War Italy

Grant Miller, Marcella Alsan, Vincenzo Atella, Jay Bhattacharya, Valentina Conti
2017
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Journal Articles

Breast density notification legislation and breast cancer stage at diagnosis: early evidence from the SEER registry

Ilana Richman, Steven M. Asch, Eran Bendavid, Jay Bhattacharya, Douglas K. Owens
Journal of General Internal Medicine , 2016

Background

Twenty-eight states have passed breast density notification laws, which require physicians to inform women of a finding of dense breasts on mammography.

Objective

To evaluate changes in breast cancer stage at diagnosis after enactment of breast density notification legislation.

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Journal Articles

Geographic variation in surgical outcomes and cost between the United States and Japan

Michael P. Hurley, Lena Schoemaker, John M. Morton, Sherry M. Wren, William B. Vogt, Sachiko Watanabe, Aki Yoshikawa, Jay Bhattacharya
The American Journal of Managed Care , 2016

Objectives: Unwarranted geographic variation in spending has received intense scrutiny in the United States. However, few studies have compared variation in spending and surgical outcomes between the United States healthcare system and those of other nations.

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Journal Articles

Effect of Transplant Center Volume on Cost and Readmissions in Medicare Lung Transplant Recipients

Joshua J. Mooney, David Weill, Jack H. Boyd, Mark R. Nicolls, Jay Bhattacharya, Gundeep S. Dhillon
Annals of the American Thoracic Society , 2016

Rationale: Although lung transplant recipient survival is better at higher volume centers, the effect of center volume on admission cost and early hospital readmission is unknown.

Objectives: To understand the association between transplant center volume and recipient risk-adjusted transplant admission cost, in-hospital mortality, and early hospital readmission in lung transplant recipients.

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Journal Articles

Physician spending and subsequent risk of malpractice claims: observational study

Anupam B Jena, Lena Schoemaker, Jay Bhattacharya, Seth A Seabury
BMJ , 2015

Abstract

 

Study question Is a higher use of resources by physicians associated with a reduced risk of malpractice claims?

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Journal Articles

Out-of-pocket health expenditures and antimicrobial resistance in low-income and middle-income countries: an economic analysis

Marcella Alsan, Lena Schoemaker, Karen Eggleston, Nagamani Kammili, Prasanthi Kolli, Jay Bhattacharya
Lancet Infectious Diseases , 2015

Introduction

The decreasing effectiveness of antimicrobial agents is a growing global public health concern. Low-income and middle-income countries are vulnerable to the loss of antimicrobial efficacy because of their high burden of infectious disease and the cost of treating resistant organisms. We aimed to assess if copayments in the public sector promoted the development of antibiotic resistance by inducing patients to purchase treatment from less well regulated private providers.

Methods

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Journal Articles

Utilization Trends of Anti-TNF Agents and Health Outcomes in Adults and Children with Inflammatory Bowel Diseases: A Single-center Experience

KT Park, Aaron Sin, May Wu, Dorsey Bass, Jay Bhattacharya
Inflammatory Bowel Diseases , 2014

Utilization trends and health effects of infliximab and adalimumab in inflammatory bowel disease (IBD) are incompletely understood. We aimed to describe utilization trends of these 2 anti-tumor necrosis factor (TNF) agents, determine the correlation between utilization with rates of hospitalization and surgery and describe differences in use between adults and children. Longitudinal data were analyzed for drug utilization, hospitalization, and abdominal surgery. Descriptive statistics were used to show trends, and utilization quotients were compared for standardization.

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Working Papers

Will Divestment from Employment-Based Health Insurance Save Employers Money? The Case of State and Local Governments

Jeremy Goldhaber-Fiebert, David Studdert, Monica Farid, Jay Bhattacharya
National Bureau of Economic Research (NBER) , 2014
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Journal Articles

The Gorbachev Anti-Alcohol Campaign and Russia's Mortality Crisis

Jay Bhattacharya, Christina Gathmann, Grant Miller
American Economic Journal: Applied Economics , 2013

Political and economic transition is often blamed for Russia’s 40% surge in deaths between 1990 and 1994 (the “Russian Mortality Crisis”). Highlighting that increases in mortality occurred primarily among alcohol- related causes and among working-age men (the heaviest drinkers), this paper investigates a different explanation: the demise of the 1985-1988 Gorbachev Anti-Alcohol Campaign. We use archival sources to build a new oblast-year data set spanning 1970-2000 and find that:

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Journal Articles

HIV Development Assistance and Adult Mortality in Africa

Eran Bendavid, CB Holmes, Jay Bhattacharya, Grant Miller
Journal of the American Medical Association , 2012

Context  The effect of global health initiatives on population health is uncertain. Between 2003 and 2008, the US President's Emergency Plan for AIDS Relief (PEPFAR), the largest initiative ever devoted to a single disease, operated intensively in 12 African focus countries. The initiative's effect on all-cause adult mortality is unknown.

Objective  To determine whether PEPFAR was associated with relative changes in adult mortality in the countries and districts where it operated most intensively.

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Journal Articles

HIV Development Assistance and Adult Mortality in Africa

Eran Bendavid, Charles Holmes, Jay Bhattacharya, Grant Miller
Journal of the American Medical Association , 2012

Context  The effect of global health initiatives on population health is uncertain. Between 2003 and 2008, the US President's Emergency Plan for AIDS Relief (PEPFAR), the largest initiative ever devoted to a single disease, operated intensively in 12 African focus countries. The initiative's effect on all-cause adult mortality is unknown.

Objective  To determine whether PEPFAR was associated with relative changes in adult mortality in the countries and districts where it operated most intensively.

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Journal Articles

Diabetes, Its Treatment, and Catastrophic Medical Spending in 35 Developing Countries

Crystal Smith-Spangler, Jay Bhattacharya, Jeremy Goldhaber-Fiebert
Diabetes Care , 2012

OBJECTIVE To assess the individual financial impact of having diabetes in developing countries, whether diabetic individuals possess appropriate medications, and the extent to which health insurance may protect diabetic individuals by increasing medication possession or decreasing the risk of catastrophic spending.

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Journal Articles

The Utility of Childhood and Adolescent Obesity Assessment in Relation to Adult Health

Jeremy Goldhaber-Fiebert, Rachel Rubinfeld, Jay Bhattacharya, Thomas N. Robinson, Paul H. Wise
Medical Decision Making , 2012

Background: High childhood obesity prevalence has raised concerns about future adult health, generating calls for obesity screening of young children. 

Objective: To estimate how well childhood obesity predicts adult obesity and to forecast obesity-related health of future US adults. 

Design: Longitudinal statistical analyses; microsimulations combining multiple data sets. 

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Journal Articles

Pharmaceutical industry, drug quality and regulation. Evidence from US and Italy

Vincenzo Atella, Jay Bhattacharya, Carbonari, L.
Health Service Research , 2012
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Working Papers

The Gorbachev anti-alcohol campaign and Russia's mortality crisis

Jay Bhattacharya, Christina Gathmann, Grant Miller
NBER , 2011

Political and economic transition is often blamed for Russia’s 40% surge in deaths between 1990 and 1994. Highlighting that increases in mortality occurred primarily among alcohol-related causes and among working-age men (the heaviest drinkers), this paper investigates an alternative explanation: the demise of the 1985-1988 Gorbachev Anti-Alcohol Campaign.

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Journal Articles

HIV-1 clade C envelopes obtained from late stage symptomatic Indian patients varied in their ability towards relative CD4 usages and sensitivity to CCR5 antagonist TAK-779

Gharu L, Ringe R, Jay Bhattacharya
Virus Research , 2011

The mechanism by which strictly CCR5 using HIV-1 clade C variants exacerbate disease progression in absence of coreceptor switch is not clearly known.

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Journal Articles

A single amino acid substitution in the C4 region in gp120 confers enhanced neutralization of HIV-1 by modulating CD4 binding sites and V3 loop

Ringe R, Sharma D, Zolla-Pazner S, Phogat S, Risbud A, Thakar M, Paranjape R, Jay Bhattacharya
Virology , 2011

Identification of vulnerability in the HIV-1 envelope (Env) will aid in Env-based vaccine design. We recently found an HIV-1 clade C Env clone (4-2.J45) amplified from a recently infected Indian patient showing exceptional neutralization sensitivity to autologous plasma in contrast to other autologous Envs obtained at the same time point.

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Journal Articles

Characterization of circulating HIV-1 env genes in plasma of two antiretroviral naïve slow progressing patients with broad neutralizing antibody response with evidence of recombination

Mukhopadhyay S, Ringe R, Patil AA, Paranjape RS, Jay Bhattacharya
AIDS Research and Human Retroviruses , 2011

In the present study, we investigated genetic divergence between complete autologous HIV-1 env genes amplified directly from plasma of two anti-retroviral naïve, slow progressing Indian patients with broad neutralizing antibody response. All the envelopes (Env) clones obtained from one patient (LT1) belonged to subtype C; the second patient (LT5) harbored quasispecies comprising of pure B, C and B/C recombinants with distinct breakpoints indicative of dual infection with genetically distinct strains.

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Journal Articles

Genetic Conservation in gp36 Transmembrane Sequences of Indian HIV Type 2 Isolates

Jadhav S, Tripathy S, Kulkarni S, Chaturbhuj D, Ghare R, Jay Bhattacharya, Paranjape R
AIDS Research and Human Retroviruses , 2011

Abstract HIV-2 group A is predominant in different parts of the world, especially Africa, Portugal, Spain, France, the United Kingdom, the United States, Korea, and India. Among the Asian countries, India accounts for about 95% of all HIV-2 infections. The prevalence of HIV-2 has been reported from various states of India such as Maharashtra, Goa, Tamil Nadu, West Bengal, and Uttar Pradesh.

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Working Papers

Public Avoidance and the Epidemiology of Novel H1N1 Influenza A

Byung Kwang Yoo, Kasajima M, Jay Bhattacharya
National Bureau of Economic Research Working Paper , 2010

In June 2009, the World Health Organization declared that novel influenza A (nH1N1) had reached pandemic status worldwide. The response to the spread of this virus by the public and by the public health community was immediate and widespread. Among the responses included voluntary avoidance of public spaces, closure of schools, the ubiquitous placement of hand sanitizer, and the use of face masks in public places.

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Journal Articles

Evaluating permanent disability ratings using empirical data on earnings losses

Jay Bhattacharya, Neuhauser, F., Reville, R. T., Seabury, S. A.
Journal of Risk and Insurance , 2010

Abstract:      

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Journal Articles

The Relation of Price of Antiretroviral Drugs and Foreign Assistance with Coverage of HIV Treatment in Africa: Retrospective Study

Eran Bendavid, Jay Bhattacharya, Nicole Smith, Eric Leroux, Grant Miller
BMJ , 2010

Objective To determine the association of reductions in price of antiretroviral drugs and foreign assistance for HIV with coverage of antiretroviral treatment.

Design Retrospective study.

Setting Africa.

Participants 13 African countries, 2003-8.

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Journal Articles

Effects of Mass Media Coverage on Timing and Annual Receipt of Influenza Vaccination among Medicare Elderly

Byung Kwang Yoo, Holland ML, Jay Bhattacharya, Phelps CE, Szilagyi PG
Health Services Research , 2010
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Journal Articles

AIDS and Declining Support for Dependent Elderly People in Africa: Retrospective Analysis Using Demographic and Health Surveys

T Kautz, Eran Bendavid, Jay Bhattacharya, Grant Miller
BMJ , 2010

Objectives To determine the relation between the HIV/AIDS epidemic and support for dependent elderly people in Africa.
Design Retrospective analysis using data from Demographic and Health Surveys.

Setting 22 African countries between 1991 and 2006.

Participants 123 176 individuals over the age of 60.

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