Health and Medicine

FSI’s researchers assess health and medicine through the lenses of economics, nutrition and politics. They’re studying and influencing public health policies of local and national governments and the roles that corporations and nongovernmental organizations play in providing health care around the world. Scholars look at how governance affects citizens’ health, how children’s health care access affects the aging process and how to improve children’s health in Guatemala and rural China. They want to know what it will take for people to cook more safely and breathe more easily in developing countries.

FSI professors investigate how lifestyles affect health. What good does gardening do for older Americans? What are the benefits of eating organic food or growing genetically modified rice in China? They study cost-effectiveness by examining programs like those aimed at preventing the spread of tuberculosis in Russian prisons. Policies that impact obesity and undernutrition are examined; as are the public health implications of limiting salt in processed foods and the role of smoking among men who work in Chinese factories. FSI health research looks at sweeping domestic policies like the Affordable Care Act and the role of foreign aid in affecting the price of HIV drugs in Africa.

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Background: Research on the relationship between substance use disorders (SUDs) and older adults' health care costs is equivocal. A large-scale study comparing health care costs among older adults with and without SUDs has never been conducted.

Objective: To determine the relation of SUDs to health care costs in a large sample of adults following entry into a Veterans Affairs (VA) nursing home.

Methods: We performed a retrospective analysis of 29,997 adults aged 45+ who entered a VA nursing home in 2000. Total costs were tallied over fiscal years 1997 to 2000 by setting (outpatient, nursing home, other inpatient, and total) and included all care paid by VA.

Results: Relative to non-SUD patients, those with SUDs aged 75 to 84 years had significantly higher total costs of care (+$10,020), as did those aged 85 and above (+$16,052). Yet, SUD diagnosis was not a significant predictor of total cost or nursing home cost among persons 65 and above after controlling for demographic, clinical, and financial factors.

Conclusions: SUDs do not directly increase health care costs among older adults entering nursing homes, although they may affect cost of care indirectly through factors such as income and marital dissolution. The generational increase in SUD rates occurring in the United States may not lead to substantially greater health care expenses if appropriate assistance can be provided before nursing home entry.

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Medical Care
Authors
Mark W. Smith
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Background. The effect of antiretroviral therapy (ART) interruption or intensification on health-related quality of life (HRQoL) in advanced HIV patients is unknown.

Objective. To assess the impact of temporary treatment interruption and intensification of ART on HRQoL.

Design. A 2 x 2 factorial open label randomized controlled trial.

Setting. Hospitals in the United States, Canada, and the United Kingdom.

Patients. Multidrug resistant (MDR) HIV patients.

Intervention. Patients were randomized to receive a 12-wk interruption or not, and ART intensification or standard ART.

Measurements. The Health Utilities Index (HUI3), EQ-5D, standard gamble (SG), time tradeoff (TTO), visual analog scale (VAS), and the Medical Outcomes Study HIV Health Survey (MOS-HIV).

Results. There were no significant differences in HRQoL among the four groups during follow-up; however, there was a temporary significant decline in HRQoL on some measures within the interruption group during interruption (HUI3 −0.05, P = 0.03; VAS −5.9, P = 0.002; physical health summary −2.9, P = 0.001; mental health summary −1.9, P = 0.02). Scores declined slightly overall during follow-up. Multivariate analysis showed significantly lower HRQoL associated with some clinical events.

Limitations. The results may not apply to HIV patients who have not experienced multiple treatment failures or who have not developed MDR HIV.

Conclusions. Temporary ART interruption and ART intensification provided neither superior nor inferior HRQoL compared with no interruption and standard ART. Among surviving patients, HRQoL scores declined only slightly over years of follow-up in this advanced HIV cohort; however, approximately one-third of patients died during the trial follow up. Lower HRQoL was associated with adverse clinical events.

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Medical Decision Making
Authors
Mark Holodniy
Douglas K. Owens
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Paul Wise is a clinical professor of pediatrics and a CHP/PCOR core faculty member. His work focuses on children's health policy; health disparities by race, ethnicity and socioeconomic status; and the interaction of genetics and the environment as these factors influence child and maternal health.

Before coming to Stanford in July 2004, he was a professor of pediatrics at Boston University and vice-chief of Social Medicine and Health Inequalities at Brigham and Women's Hospital. He previously served as director of emergency and primary care services at the Children's Hospital of Boston, and as director of the Harvard Institute for Reproductive and Child Health at Harvard Medical School. He has also served as a special expert at the National Institutes of Health and as special assistant to the U.S. Surgeon General.

Wise has worked to improve healthcare practices and policies in developing countries. He is involved in child health projects in India, South Africa and Latin America, targeting diseases such as tuberculosis and AIDS. He currently chairs the steering committee of the NIH's Global Network for Maternal and Child Health Research, and he has served on many other boards and committees including the Physicians' Task Force on Hunger and the American Academy of Pediatrics' Consortium on Health Disparities. He has received honors from organizations including the American Public Health Association, the March of Dimes, and the New York Academy of Medicine.

He received a BA in Latin American studies from Cornell University, an MD from Cornell University and an MPH from the Harvard School of Public Health. He completed a residency in pediatrics at Children's Hospital Medical Center in Boston.

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Richard E. Behrman Professor of Child Health and Society
Senior Fellow, Freeman Spogli Institute for International Studies
rsd15_081_0253a.jpg MD, MPH

Dr. Paul Wise is dedicated to bridging the fields of child health equity, public policy, and international security studies. He is the Richard E. Behrman Professor of Child Health and Society and Professor of Pediatrics, Division of Neonatology and Developmental Medicine, and Health Policy at Stanford University. He is also co-Director, Stanford Center for Prematurity Research and a Senior Fellow in the Center on Democracy, Development, and the Rule of Law, and the Center for International Security and Cooperation, Freeman Spogli Institute for International Studies, Stanford University. Wise is a fellow of the American Academy of Arts and Sciences and has been working as the Juvenile Care Monitor for the U.S. Federal Court overseeing the treatment of migrant children in U.S. border detention facilities.

Wise received his A.B. degree summa cum laude in Latin American Studies and his M.D. degree from Cornell University, a Master of Public Health degree from the Harvard School of Public Health and did his pediatric training at the Children’s Hospital in Boston. His former positions include Director of Emergency and Primary Care Services at Boston Children’s Hospital, Director of the Harvard Institute for Reproductive and Child Health, Vice-Chief of the Division of Social Medicine and Health Inequalities at the Brigham and Women’s Hospital and Harvard Medical School and was the founding Director or the Center for Policy, Outcomes and Prevention, Stanford University School of Medicine. He has served in a variety of professional and consultative roles, including Special Assistant to the U.S. Surgeon General, Chair of the Steering Committee of the NIH Global Network for Women’s and Children’s Health Research, Chair of the Strategic Planning Task Force of the Secretary’s Committee on Genetics, Health and Society, a member of the Advisory Council of the National Institute of Child Health and Human Development, NIH, and the Health and Human Secretary’s Advisory Committee on Infant and Maternal Mortality.

Wise’s most recent U.S.-focused work has addressed disparities in birth outcomes, regionalized specialty care for children, and Medicaid. His international work has focused on women’s and child health in violent and politically complex environments, including Ukraine, Gaza, Central America, Venezuela, and children in detention on the U.S.-Mexico border.  

Core Faculty, Center on Democracy, Development and the Rule of Law
Affiliated faculty at the Center for International Security and Cooperation
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Paul H. Wise Richard E. Behrman Professor of Child Health and Society and CHP/PCOR Core Faculty Member Speaker CDDRL, CISAC Affiliated Faculty
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Background Injection drug use (IDU) and heterosexual virus transmission both contribute to the growing mixed HIV epidemics in Eastern Europe and Central Asia. In Ukraine—chosen in this study as a representative country—IDU-related risk behaviors cause half of new infections, but few injection drug users (IDUs) receive methadone substitution therapy. Only 10% of eligible individuals receive antiretroviral therapy (ART). The appropriate resource allocation between these programs has not been studied. We estimated the effectiveness and cost-effectiveness of strategies for expanding methadone substitution therapy programs and ART in mixed HIV epidemics, using Ukraine as a case study.

Methods and Findings We developed a dynamic compartmental model of the HIV epidemic in a population of non-IDUs, IDUs using opiates, and IDUs on methadone substitution therapy, stratified by HIV status, and populated it with data from the Ukraine. We considered interventions expanding methadone substitution therapy, increasing access to ART, or both. We measured health care costs, quality-adjusted life years (QALYs), HIV prevalence, infections averted, and incremental cost-effectiveness. Without incremental interventions, HIV prevalence reached 67.2% (IDUs) and 0.88% (non-IDUs) after 20 years. Offering methadone substitution therapy to 25% of IDUs reduced prevalence most effectively (to 53.1% IDUs, 0.80% non-IDUs), and was most cost-effective, averting 4,700 infections and adding 76,000 QALYs compared with no intervention at US$530/QALY gained. Expanding both ART (80% coverage of those eligible for ART according to WHO criteria) and methadone substitution therapy (25% coverage) was the next most cost-effective strategy, adding 105,000 QALYs at US$1,120/QALY gained versus the methadone substitution therapy-only strategy and averting 8,300 infections versus no intervention. Expanding only ART (80% coverage) added 38,000 QALYs at US$2,240/QALY gained versus the methadone substitution therapy-only strategy, and averted 4,080 infections versus no intervention. Offering ART to 80% of non-IDUs eligible for treatment by WHO criteria, but only 10% of IDUs, averted only 1,800 infections versus no intervention and was not cost effective.

Conclusions Methadone substitution therapy is a highly cost-effective option for the growing mixed HIV epidemic in Ukraine. A strategy that expands both methadone substitution therapy and ART to high levels is the most effective intervention, and is very cost effective by WHO criteria. When expanding ART, access to methadone substitution therapy provides additional benefit in infections averted. Our findings are potentially relevant to other settings with mixed HIV epidemics.

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PLoS Med
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Douglas K. Owens
Margaret L. Brandeau
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Background Guidance is needed on best medical management for advanced HIV disease with multidrug resistance (MDR) and limited retreatment options. We assessed two novel antiretroviral (ARV) treatment approaches in this setting.

Methods and Findings We conducted a 2×2 factorial randomized open label controlled trial in patients with a CD4 count ≤300 cells/µl who had ARV treatment (ART) failure requiring retreatment, to two options (a) re-treatment with either standard (≤4 ARVs) or intensive (≥5 ARVs) ART and b) either treatment starting immediately or after a 12-week monitored ART interruption. Primary outcome was time to developing a first AIDS-defining event (ADE) or death from any cause. Analysis was by intention to treat. From 2001 to 2006, 368 patients were randomized. At baseline, mean age was 48 years, 2% were women, median CD4 count was 106/µl, mean viral load was 4.74 log10 copies/ml, and 59% had a prior AIDS diagnosis. Median follow-up was 4.0 years in 1249 person-years of observation. There were no statistically significant differences in the primary composite outcome of ADE or death between re-treatment options of standard versus intensive ART (hazard ratio 1.17; CI 0.86–1.59), or between immediate retreatment initiation versus interruption before re-treatment (hazard ratio 0.93; CI 0.68–1.30), or in the rate of non-HIV associated serious adverse events between re-treatment options.

Conclusions We did not observe clinical benefit or harm assessed by the primary outcome in this largest and longest trial exploring both ART interruption and intensification in advanced MDR HIV infection with poor retreatment options.

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PLoS ONE
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Mark Holodniy
Douglas K. Owens
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Obesity – and its related illnesses – endangers the lives of millions across the world. While healthier, more physically active lifestyles can mitigate this, the question remains of how policymakers can get people to switch from being couch potatoes to keen runner beans. This column presents new evidence suggesting that for many even a nudge may suffice.

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VoxEU
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Jeremy Goldhaber-Fiebert
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Diagnostic imaging is indicated for patients with low back pain only if they have severe progressive neurologic deficits or signs or symptoms that suggest a serious or specific underlying condition. In other patients, evidence indicates that routine imaging is not associated with clinically meaningful benefits but can lead to harms. Addressing inefficiencies in diagnostic testing could minimize potential harms to patients and have a large effect on use of resources by reducing both direct and downstream costs. In this area, more testing does not equate to better care. Implementing a selective approach to low back imaging, as suggested by the American College of Physicians and American Pain Society guideline on low back pain, would provide better care to patients, improve outcomes, and reduce costs.

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Annals of Internal Medicine
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Douglas K. Owens
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Health care costs in the United States are increasing unsustainably, and further efforts to control costs are inevitable and essential. Efforts to control expenditures should focus on the value, in addition to the costs, of health care interventions. Whether an intervention provides high value depends on assessing whether its health benefits justify its costs. High-cost interventions may provide good value because they are highly beneficial; conversely, low-cost interventions may have little or no value if they provide little benefit.

Thus, the challenge becomes determining how to slow the rate of increase in costs while preserving high-value, high-quality care. A first step is to decrease or eliminate care that provides no benefit and may even be harmful. A second step is to provide medical interventions that provide good value: medical benefits that are commensurate with their costs.

This article discusses 3 key concepts for understanding how to assess the value of health care interventions. First, assessing the benefits, harms, and costs of an intervention is essential to understand whether it provides good value. Second, assessing the cost of an intervention should include not only the cost of the intervention itself but also any downstream costs that occur because the intervention was performed. Third, the incremental cost-effectiveness ratio estimates the additional cost required to obtain additional health benefits and provides a key measure of the value of a health care intervention.

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Annals of Internal Medicine
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Douglas K. Owens
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