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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Prior studies suggest patient self-testing (PST) of prothrombin time (PT) can improve the quality of anticoagulation (AC) and reduce complications (e.g., bleeding and thromboembolic events). "The Home INR Study" (THINRS) compared AC management with frequent PST using a home monitoring device to high-quality AC management (HQACM) with clinic-based monitoring on major health outcomes. A key clinical and policy question is whether and which patients can successfully use such devices. We report the results of Part 1 of THINRS in which patients and caregivers were evaluated for their ability to perform PST. Study-eligible patients (n = 3643) were trained to use the home monitoring device and evaluated after 2-4 weeks for PST competency. Information about demographics, medical history, warfarin use, medications, plus measures of numeracy, literacy, cognition, dexterity, and satisfaction with AC were collected. Approximately 80% (2931 of 3643) of patients trained on PST demonstrated competency; of these, 8% (238) required caregiver assistance. Testers who were not competent to perform PST had higher numbers of practice attempts, higher cuvette wastage, and were less able to perform a fingerstick or obtain blood for the cuvette in a timely fashion. Factors associated with failure to pass PST training included increased age, previous stroke history, poor cognition, and poor manual dexterity. A majority of patients were able to perform PST. Successful home monitoring of PT with a PST device required adequate levels of cognition and manual dexterity. Training a caregiver modestly increased the proportion of patients who can perform PST.

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Journal Articles
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Journal of Thrombosis and Thrombolysis
Authors
Ciaran S. Phibbs
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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.

Main outcome measures We investigated how three measures of the living arrangements of older people have been affected by the HIV/AIDS epidemic: the number of older individuals living alone (that is, the number of unattended elderly people); the number of older individuals living with only dependent children under the age of 10 (that is, in missing generation households); and the number of adults age 18-59 (that is, prime age adults) per household where an older person lives.

Results An increase in annual AIDS mortality of one death per 1000 people was associated with a 1.5% increase in the proportion of older individuals living alone (95% CI 1.2% to 1.9%) and a 0.4% increase in the number of older individuals living in missing generation households (95% CI 0.3% to 0.6%). Increases in AIDS mortality were also associated with fewer prime age adults in households with at least one older person and at least one prime age adult (P<0.001). These findings suggest that in our study countries, which encompass 70% of the sub-Saharan population, the HIV/AIDS epidemic could be responsible for 582 200-917 000 older individuals living alone without prime age adults and 141 000-323 100 older individuals being the sole caregivers for young children.

Conclusions Africa's HIV/AIDS epidemic might be responsible for a large number of older people losing their support and having to care for young children. This population has previously been under-recognised. Efforts to reduce HIV/AIDS deaths could have large "spillover" benefits for elderly people in Africa.

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Journal Articles
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BMJ
Authors
Eran Bendavid
Grant Miller
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OBJECTIVE Despite the documented utility of regionalized systems of pediatric specialty care, little is known about the actual use of such systems in total populations of chronically ill children. The objective of this study was to evaluate variations and trends in regional patterns of specialty care hospitalization for children with chronic illness in California.

METHODS Using California's Office of Statewide Health Planning and Development unmasked discharge data set between 1999 and 2007, we performed a retrospective, total-population analysis of variations in specialty care hospitalization for children with chronic illness in California. The main outcome measure was the use of pediatric specialty care centers for hospitalization of children with a chronic condition in California.

RESULTS Analysis of 2 170 102 pediatric discharges revealed that 41% had a chronic condition, and 44% of these were discharged from specialty care centers. Specialty care hospitalization varied by county and type of condition. Multivariate analyses associated increased specialty care center use with public insurance and high pediatric specialty care bed supply. Decreased use of regionalized care was seen for adolescent patients, black, non-Hispanic children, and children who resided in zip codes of low income or were located farther from a regional center of care.

CONCLUSIONS Significant variation exists in specialty care hospitalization among chronically ill children in California. These findings suggest a need for greater scrutiny of clinical practices and child health policies that shape patterns of hospitalization of children with serious chronic disease.

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Journal Articles
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Pediatrics
Authors
Lisa Chamberlain
Lynne C. Huffman
Paul H. Wise
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Objectives: Emergency departments (EDs) are increasingly proposed as high-yield venues for providing preventive health education to a population at risk for unhealthy behaviors and unmet primary care needs. This study sought to determine the preferred health education topics and teaching modality among ED patients and visitors.

Methods: For two 24-hour periods, patients aged 18 years and older presenting to four Boston EDs were consecutively enrolled, and waiting room visitors were surveyed every 3 hours. The survey assessed interest in 28 health conditions and topics, which were further classified into nine composite health education categories. Also assessed was the participants' preferred teaching modality.

Results: Among 1,321 eligible subjects, 1,010 (76%) completed the survey, of whom 56% were patients and 44% were visitors. Among the health conditions, respondents were most interested in learning about stress and depression (32%). Among the health topics, respondents were most interested in exercise and nutrition (43%). With regard to learning modality, 34% of subjects chose brochures/book, 25% video, 24% speaking with an expert, 14% using a computer, and 3% another mode of learning (e.g., a class). Speaking with an expert was the overall preferred modality for those with less than high school education and Hispanics, as well as those interested in HIV screening, youth violence, and stroke. Video was the preferred modality for those interested in learning more about depression, alcohol, drugs, firearm safety, and smoke detectors.

Conclusions: Emergency department patients and visitors were most interested in health education on stress, depression, exercise, and nutrition, compared to topics more commonly targeted to the ED population such as substance abuse, sexual health (including HIV testing), and injury prevention. Despite many recent innovations in health education, most ED patients and visitors in our study preferred the traditional form of books and brochures. Future ED health education efforts may be optimized by taking into account the learning preferences of the target ED population.

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Policy Briefs
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Academic Emergency Medicine
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We examined military-related sexual trauma among deployed Operation Enduring Freedom and Operation Iraqi Freedom veterans. Of 125 729 veterans who received Veterans Health Administration primary care or mental health services, 15.1% of the women and 0.7% of the men reported military sexual trauma when screened. Military sexual trauma was associated with increased odds of a mental disorder diagnosis, including posttraumatic stress disorder, other anxiety disorders, depression, and substance use disorders. Sexual trauma is an important postdeployment mental health issue in this population.

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Journal Articles
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Journal Publisher
American Journal of Public Health
Authors
Mark W. Smith
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OBJECTIVE. The purpose of this study was to evaluate the prevalence of incidental extracardiac findings on coronary CT, to determine the associated downstream resource utilization, and to estimate additional costs per patient related to the associated diagnostic workup.

MATERIALS AND METHODS. This retrospective study examined incidental extracardiac findings in 151 consecutive adults (69.5% men and 30.5% women; mean age, 54 years) undergoing coronary CT during a 7-year period. Incidental findings were recorded, and medical records were reviewed for downstream diagnostic examinations for a follow-up period of 1 year (minimum) to 7 years (maximum). Costs of further workup were estimated using 2009 Medicare average reimbursement figures.

RESULTS. There were 102 incidental extracardiac findings in 43% (65/151) of patients. Fifty-two percent (53/102) of findings were potentially clinically significant, and 81% (43/53) of these findings were newly discovered. The radiology reports made specific follow-up recommendations for 36% (19/53) of new significant findings. Only 4% (6/151) of patients actually underwent follow-up imaging or intervention for incidental findings. One patient was found to have a malignancy that was subsequently treated. The average direct costs of additional diagnostic workup were $17.42 per patient screened (95% CI, $2.84-$32.00) and $438.39 per patient with imaging follow-up (95% CI, $301.47-$575.31).

CONCLUSION. Coronary CT frequently reveals potentially significant incidental extracardiac abnormalities, yet radiologists recommend further evaluation in only one-third of cases. An even smaller fraction of cases receive further workup. The failure to follow-up abnormal incidental findings may result in missed opportunities to detect early disease, but also limits the short-term attributable costs.

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Journal Articles
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American Journal of Roentgenology
Authors
Sylvia K. Plevritis
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Health care expenditures in the United States have been increasing much more rapidly than the rest of the economy over the past 30 years. The average gap, 2.8% per annum, results in health care's share of the economy doubling every 26 years.1 Why does this matter? Would it matter if expenditures for personal computers were increasing 2.8% per annum more rapidly than the rest of the economy? The appropriate response would be, "So what?" Concern about health care expenditures is often attributed to the large role of these expenditures in the federal budget and the effect on the deficit.2 But that is not the whole story. A dollar spent on health care is not a priori more fiscally toxic than a dollar spent on transportation or education or any other item in the government budget. Moreover, health expenditures in the private sector have also been increasing.

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Journal Articles
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Journal of the American Medical Association
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The Eisenberg Legacy Lecture honors Dr. John Eisenberg, a renowned internist and health services researcher who directed the Agency for Healthcare Research and Quality (AHRQ) from 1997 to 2002. This annual event features experts and topics relevant to improving health policy and healthcare quality.  The lecture is funded by the California HealthCare Foundation and is co-sponsored by the Center for Health Policy/Center for Primary Care and Outcomes Research at Stanford University; the Center for Health Research/School of Public Health at UC Berkeley; and the Philip R.

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This report evaluates the level of evidence currently available to support the effectiveness and safety of using recombinant activated coagulation factor VII (rFVIIa) for clinical indications not approved by the U. S. Food and Drug Administration (FDA). rFVIIa is approved for a variety of uses in hemophilia patients who have developed antibody inhibitors that compromise the use of standard factor replacement. Use of this costly biologic product has expanded beyond these hemophilia-related indications to encompass a range of off-label uses, most of which are in-hospital uses. These uses differ substantially from the drug’s FDA approved label. The purpose of this report is two-fold: (1) To document the full range of clinical indications for which rFVIIa is being used and the types of studies available to evaluate these uses and (2) To provide a comparative effectiveness review of rFVIIa vs. usual care for several in-hospital clinical indications: intracranial hemorrhage, massive bleeding secondary to trauma, and the selected surgical procedures of cardiac surgery, liver transplantation, and prostatectomy.

Off-label drug use refers to any use of a medication that deviates from the product labeling approved and required by the FDA. The FDA drug approval process mandates randomized clinical trials that demonstrate efficacy and safety for specific indications prior to marketing. Once approval is given, however, the FDA does not regulate whether drugs are prescribed for off-label indications. In most instances, the data supporting off-label drug use falls short of the rigor that accompanies FDA review. This uncertainty may be acceptable, as when a drug’s use is infrequent. Nevertheless, concerns increase when off-label use is clinically distinct from approved indications, when off-label use becomes frequent, when a drug is costly, or when a drug is used in different clinical settings (e.g., shifts from outpatient to in-hospital use).

rFVIIa is a form of human factor VII produced by recombinant technology. This intravenously delivered product works as a potent procoagulant by effectively bypassing parts of the clotting process normally required for clotting. It can facilitate control of bleeding in situations where standard human blood product transfusions have failed. Novoseven® is the only form of rFVIIa available commercially. Developed in the late 1980s, rFVIIa was approved by the FDA in 1999 for use in patients with Hemophilia A and Hemophilia B with antibody inhibitors that lead to unresponsiveness to factor VIII or factor IX, respectively. Both of these X-linked genetic conditions are rare, and most hemophilia patients never require rFVIIa for treatment of bleeding episodes. While the hemophilia population has remained stable over the past decade, in-hospital, off-label use of rFVIIa has increased. 

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Journal Articles
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Journal Publisher
Comparative Effectiveness
Authors
Douglas K. Owens
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