Discretionary decision making by primary care physicians and the cost of U.S. Health care

Role Modeling and Regional Health Care Intensity: U.S. Medical Student Attitudes Toward and Experiences With Cost-Conscious Care

PURPOSE

To examine medical student attitudes toward cost-conscious care and whether regional health care intensity is associated with reported exposure to physician role-modeling behaviors related to cost-conscious care.

METHOD

Students at 10 U.S. medical schools were surveyed in 2015. Thirty-five items assessed attitudes toward, perceived barriers to and consequences of, and observed physician role-modeling behaviors related to cost-conscious care (using scales for cost-conscious and potentially wasteful behaviors; Cronbach alphas of 0.82 and 0.81, respectively). Regional health care intensity was measured using Dartmouth Atlas End-of-Life Chronic Illness Care data: ratio of physician visits per decedent compared with the U.S. average, ratio of specialty to primary care physician visits per decedent, and hospital care intensity index.

RESULTS

Of 5,992 students invited, 3,395 (57%) responded. Ninety percent (2,640/2,932) agreed physicians have a responsibility to contain costs. However, 48% (1,1416/2,960) thought ordering a test is easier than explaining why it is unnecessary, and 58% (1,685/2,928) agreed ordering fewer tests will increase the risk of malpractice litigation. In adjusted linear regression analyses, students in higher-health-care-intensity regions reported observing significantly fewer cost-conscious role-modeling behaviors: For each one-unit increase in the three health care intensity measures, scores on the 21-point cost-conscious role-modeling scale decreased by 4.4 (SE 0.7), 3.2 (0.6), and 3.9 (0.6) points, respectively (all P < .001).

CONCLUSIONS

Medical students endorse barriers to cost-conscious care and encounter conflicting role-modeling behaviors, which are related to regional health care intensity. Enhancing role modeling in the learning environment may help prepare future physicians to address health care costs.

Smoking Response to Health and Medical Spending Changes and the Role of Insurance

Severe health shocks provide new information about one's personal health and have been shown to influence smoking behaviors. In this paper, we suggest that they may also convey information about the hard to predict financial consequences of illnesses. Relevant financial risk information is idiosyncratic and unavailable to the consumer preceding illness, and the information search costs are high. However, new and salient information about the health as well as financial consequences of smoking after a health shock may impact smoking responses. Using variation in the timing of health shocks and two features of the US health care system (uninsured spells and aging into the Medicare program at 65), we test for heterogeneity in the post-shock smoking decision according to plausibly exogenous changes in financial risk exposure to medical spending. We also explore the relationship between smoking and the evolution of out-of-pocket costs. Individuals experiencing a cardiovascular health shock during an uninsured spell have more than twice the cessation effect of those receiving the illness while insured. For those uninsured prior to age 65 years, experiencing a cardiovascular shock post Medicare eligibility completely offsets the cessation effect. We also find that older adults' medical spending changes separate from health shocks influence their smoking behavior. Copyright © 2016 John Wiley & Sons, Ltd.

Evidence-Based Practice in the Surgical Treatment of Thumb Carpometacarpal Joint Arthritis

PURPOSE

Thumb carpometacarpal (CMC) arthritis contributes considerably to functional disability in the aging adult United States (US) population. Owing to the increasing growth in this segment of our population, its burden on health care resources will increase in the future. Variations exist in the degree of complexity and cost among different surgical treatments. We examined the national trends of the surgical treatment of thumb CMC arthritis and hypothesized that current practice patterns are not supported by evidence favoring the simpler trapeziectomy-only procedure.

METHODS

Using a random 5%, nationally representative, sample of Medicare fee-for-service beneficiaries diagnosed with thumb CMC arthritis between 2001 and 2010, we used a multinomial logistic regression model to assess the association between patients' characteristics and the surgical treatment. Furthermore, we used surgeons' unique identifiers to examine how their practice preferences have changed over time.

RESULTS

Our findings demonstrated an increasing trend in the utilization of trapeziectomy with ligament reconstruction and tendon interposition (LRTI) from 84% in 2001 to 90% in 2010. Ninety-five percent of surgeons performed only 1 type of surgical procedure, and among those, 93% of surgeons performed only trapeziectomy with LRTI. Compared with 2001, the odds of a patient undergoing thumb CMC arthrodesis or prosthetic arthroplasty slightly increased between 2007 and 2010.

CONCLUSIONS

The majority of hand surgeons in the US use trapeziectomy with LRTI as the surgical treatment of choice for thumb CMC arthritis. Although clinical trials from the United Kingdom support the use of the less complex trapeziectomy-only procedure, US surgeons are still reticent to change their practice, which favors LRTI. National comparative studies are still needed to examine the effectiveness of various surgical options for the treatment of thumb CMC joint arthritis.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic II.

Longer Periods Of Hospice Service Associated With Lower End-Of-Life Spending In Regions With High Expenditures

Hospice use is expected to decrease end-of-life expenditures, yet evidence for its financial impact remains inconclusive. One potential explanation is that the use of hospice may produce differential cost-savings effects by region because of geographic variation in end-of-life spending patterns. We examined 103,745 elderly Medicare fee-for-service beneficiaries in the Surveillance, Epidemiology, and End Results Program Medicare database who died from cancer in 2004-11. We created quintiles by the adjusted mean end-of-life expenditures per hospital referral region (HRR), and we examined HRR-level variation in the association between length of hospice service and expenditures across quintiles. Longer periods of hospice service were associated with decreased end-of-life expenditures for patients residing in regions with high average expenditures but not for those in regions with low average expenditures. Hospice use accounted for 8 percent of the expenditure variation between the highest and the lowest spending quintiles, which demonstrates the powers and limitations of hospice use for saving on costs.

Evidence-based HMO care for prostate specific antigen testing

BACKGROUND

There is pressure in the U.S. system to move away from fee-for-service models to a more pre-paid system, which may result in decreased costs, but the impact on evidence-based care is unclear. We examined a large pre-paid Health Maintenance Organizations (HMO) in Israel to see if evidence-based guidelines are followed for prostate specific antigen (PSA) testing.

METHODS

A retrospective cohort of ambulatory visits from 2002 to 2011 of patients age >75 receiving care from Clalit Health Services was conducted. Historically reported U.S. cohorts were used for comparison. The main measure was the percent of patients who had at least one PSA after age 75.

RESULTS

In each of the 10 years of follow-up, 22% of the yearly Israeli cohort, with no known malignancy or benign prostatic hyperplasia, had at least one PSA, while for the total 10 years, 30% of the men had at least one PSA. These rates are considerably lower than previously reported U.S. rates.

CONCLUSIONS

In a pre-paid system in which physicians have no incentive to order tests, they appear to order PSA tests at a lower rate than has been observed in the U.S. system. Additional quality of measures should continue to be examined as the U.S. shifts away from a fee-for-service model. Copyright © 2016 John Wiley & Sons, Ltd.

Comparison of Low-Value Care in Medicaid vs Commercially Insured Populations

IMPORTANCE

Reducing unnecessary tests and treatments is a potentially promising approach for improving the value of health care. However, relatively little is known about whether insurance type or local practice patterns are associated with delivery of low-value care.

OBJECTIVES

To compare low-value care in the Medicaid and commercially insured populations, test whether provision of low-value care is associated with insurance type, and assess whether local practice patterns are associated with the provision of low-value care.

DESIGN, SETTING, AND PARTICIPANTS

This cross-sectional study of claims data from the Oregon Division of Medical Assistance Programs and the Oregon All-Payer All-Claims database included Medicaid and commercially insured adults aged 18 to 64 years. The study period was January 1, 2013, through December 31, 2013.

MAIN OUTCOMES AND MEASURES

Low-value care was assessed using 16 claims-based measures. Logistic regression was used to test the association between Medicaid vs commercial insurance coverage and low-value care and the association between Medicaid and commercial low-value care rates within primary care service areas (PCSAs).

RESULTS

This study included 286 769 Medicaid and 1 376 308 commercial enrollees in 2013. Medicaid enrollees were younger (167 847 [58.5%] of Medicaid enrollees were aged 18-34 years vs 505 628 [36.7%] of those with commercial insurance) but generally had worse health status compared with those with commercial insurance. Medicaid enrollees were also more likely to be female (180 363 [62.9%] vs 702 165 [51.0%]) and live in a rural area (120 232 [41.9%] vs 389 964 [28.3%]). A total of 10 304 of 69 338 qualifying Medicaid patients (14.9%; 95% CI, 14.6%-15.1%) received at least 1 low-value service during 2013; the corresponding rate for commercially insured patients was 35 739 of 314 023 (11.4%; 95% CI, 11.3%-11.5%). No consistent association was found between insurance type and low-value care. Compared with commercial patients, Medicaid patients were more likely to receive low-value care for 10 measures and less likely to receive low-value care for 5 others. For 7 of 11 low-value care measures, Medicaid patients were significantly more likely to receive low-value care if they resided in a PCSA with a higher rate of low-value care for commercial patients.

CONCLUSIONS AND RELEVANCE

Oregon Medicaid and commercially insured patients received moderate amounts of low-value care in 2013. No consistent association was found between insurance type and low-value care. However, Medicaid and commercial rates of low-value care were associated with one another within PCSAs. Low-value care may be more closely related to local practice patterns than to reimbursement generosity or insurance benefit structures.

Prostate Cancer Care Before and After Medicare Eligibility

Prior studies suggest Medicare eligibility confers significant and substantial reductions in mortality and beneficial increases in health service utilization. We compared 13,882 patients diagnosed with prostate cancer at ages 63 to 64 years with 14,774 patients diagnosed at ages 65 to 66 (controls) in 2004 to 2007. Compared with controls, patients diagnosed with prostate cancer before Medicare eligibility had no statistically significant or meaningful differences in cancer stage, time to treatment, or type of treatment.

Rates of admission for ambulatory care sensitive conditions in France in 2009-2010: trends, geographic variation, costs, and an international comparison

BACKGROUND

Admissions for ambulatory care sensitive conditions (ACSCs) are considered preventable and indicators of poor access to primary care. We wondered whether per-capita rates of admission for ACSCs in France demonstrated geographic variation, were changing, were related to other independent variables, or were comparable to those in other countries; further, we wanted to quantify the resources such admissions consume.

METHODS

We calculated per-capita rates of admission for five categories (chronic, acute, vaccination preventable, alcohol-related, and other) of ACSCs in 94 departments in mainland France in 2009 and 2010, examined measures and causes of geographic variation in those rates, computed the costs of those admissions, and compared rates of admission for ACSCs in France to those in several other countries.

RESULTS

The highest ACSC admission rates generally occurred in the young and the old, but rates varied across French regions. Over the 2-year period, rates of most categories of ACSCs increased; higher ACSC admission rates were associated with lower incomes and a higher supply of hospital beds. We found that the local supply of general practitioners was inversely associated with rates of chronic and total ACSC admission rates, but that this relationship disappeared if we accounted for patients' use of general practitioners in neighboring departments. ACSC admissions cost 4.755 billion euros in 2009 and 5.066 billion euros in 2010; they consumed 7.86 and 8.74 million bed days of care, respectively. France had higher rates of ACSC admissions than most other countries examined.

CONCLUSIONS

Because admissions for ACSCs are generally considered a failure of outpatient care, cost French taxpayers substantial monetary and hospital resources, and appear to occur more frequently in France than in other countries, policymakers should prioritize targeted efforts to reduce them.

Demand management for planned care: a realist synthesis

Background

The task of matching fluctuating demand with available capacity is one of the basic challenges in all large-scale service industries. It is a particularly pressing concern in modern health-care systems, as increasing demand (ageing populations, availability of new treatments, increased patient knowledge, etc.) meets stagnating supply (capacity and funding restrictions on staff and services, etc.). As a consequence, a very large portfolio of demand management strategies has developed based on quite different assumptions about the source of the problem and about the means of its resolution.

Methods

This report presents a substantial review of the effectiveness of main strategies designed to alleviate demand pressures in the area of planned care. The study commences with an overview of the key ideas about the genesis of demand and capacity problems for health services. Many different diagnoses were uncovered: fluctuating demand meeting stationary capacity; turf protection between different providers; social rather than clinical pressures on referral decisions; self-propelling diagnostic cascades; supplier-induced demand; demographic pressures on treatment; and the informed patient and demand inflation. We then conducted a review of the key ideas (programme theories) underlying interventions designed to address demand imbalance. We discovered that there was no close alignment between purported problems and advocated solutions. Demand management interventions take their starting point in seeking reforms at the levels of strategic decision-making, organisational re-engineering, procedural modifications and behavioural change. In mapping the ideas for reform, we also noted a tendency for programme theories to become ‘whole-system’ models; over time policy-makers have advocated the need for concerted action on all of these fronts.

Findings

The remainder and core of the report contains a realist synthesis of the empirical evidence on the effectiveness on a spanning subset of four major demand management interventions: referral management centres (RMCs); using general practitioners with special interests (GPwSIs) at the interface between primary and secondary care; general practitioner (GP) direct access to clinical tests; and referral guidelines. In all cases we encountered a chequered pattern of success and failure. The primary literature is replete with accounts of unanticipated problems and unintended effects. These programmes ‘work’ only in highly circumscribed conditions. To give brief examples, we found that the success of RMCs depends crucially on the balance of control in their governance structures; GPwSIs influence demand only after close negotiations on an agreed and intermediate case mix; significant efficiencies are created by direct GP access to tests mainly when there is low diagnostic yield and high ‘rule-out’ rates; and referral guidelines are more likely to work when implemented by staff with responsibility for their creation.

Conclusions

The report concludes that there is no ‘preferred intervention’ that has the capacity to outperform all others. Instead, the review found many, diverse, hard-won, local and adaptive solutions. Whatever the starting point, success in demand management depends on synchronising a complex array of strategic, organisational, procedural and motivational changes. The final chapter offers practitioners some guidance on how they might ‘think through’ all of the interdependencies, which bring demand and capacity into equilibrium. A close analysis of the implementation of different configurations of demand management interventions in different local contexts using mixed methods would be valuable to understand the processes through which such interventions are tailored to local circumstances. There is also scope for further evidence synthesis. The substitution theory is ubiquitous in health and social care and a realist synthesis to compare the fortunes of different practitioners placed at different professional boundaries (e.g. nurses/doctors, dentists/dental care practitioners, radiologists/radiographers and so on) would be valuable to identify the contexts and mechanisms through which substitution, support or short-circuit occurs.

Funding

The National Institute for Health Research Health Services and Delivery Research programme.

Use of Echocardiography in Olmsted County Outpatients With Chest Pain and Normal Resting Electrocardiograms Seen at Mayo Clinic Rochester

OBJECTIVE

To determine how often unnecessary resting echocardiograms that are "not recommended" by clinical practice guidelines are performed in patients with stable chest pain and normal resting electrocardiograms (ECGs).

PATIENTS AND METHODS

We performed a retrospective search of electronic medical records of all outpatients seen at Mayo Clinic Rochester from January 1, 2010, through December 31, 2013, to identify residents of Olmsted County, Minnesota, with stable chest pain and known or suspected coronary artery disease who underwent resting echocardiography and had normal resting ECGs and no other indication for echocardiography.

RESULTS

Of the 8280 outpatients from Olmsted County who were evaluated at Mayo Clinic Rochester with chest pain, 590 (7.1%) had resting echocardiograms. Ninety-two of these 590 patients (15.6%) had normal resting ECGs. Thirty-three of these 92 patients (35.9%) had other indications for echocardiography. The remaining 59 patients (10.0% of all echocardiograms and 0.7% of all patients) had normal resting ECGs and no other indication for echocardiography. Fifty-seven of these 59 patients (96.6%) had normal echocardiograms. Thirteen of these 59 echocardiograms (22.0%) were "preordered" before the provider (physicians, nurses, physician assistants) visit.

CONCLUSION

The overall rate of echocardiography in Olmsted County outpatients with chest pain seen at Mayo Clinic Rochester is low. Only 1 in 10 of these echocardiograms was performed in violation of the class III recommendation in the American College of Cardiology Foundation/American Heart Association guidelines for the management of stable angina. These unnecessary echocardiograms were almost always normal. The rate of unnecessary echocardiograms could be decreased by eliminating preordering.

U.S. Internal Medicine Residents' Knowledge and Practice of High-Value Care: A National Survey

PURPOSE

To determine U.S. internal medicine (IM) residents' knowledge of, attitudes toward, and self-reported practice of high-value care (HVC), or care that balances the benefits, harms, and costs of tests and treatments.

METHOD

The authors conducted a cross-sectional survey of U.S. IM residents who took the Internal Medicine In-Training Examination in October 2012. They used multivariable mixed-effects models to examine the relationships between self-reported knowledge and practice of HVC and both exposure to HVC teaching and the care intensity of the training hospital (based on a composite age-sex-race-illness standardized measure of hospital days and inpatient physician visits by Medicare recipients).

RESULTS

Of 21,617 residents who received the survey, 18,102 (83.7%) completed it. Self-reported HVC practices varied: 4,187 of 17,633 respondents (23.7%) agreed that they "share estimated costs of tests and treatments with patients"; 15,549 of 17,626 (88.2%) agreed that they "incorporate patients' values and concerns into clinical decisions." Discussions about balancing the benefits, harms, and costs of treatments with faculty during patient care at least a few times a week were reported by 7,103 of 17,704 respondents (40.1%) and were associated with all self-reported HVC practices. The training hospital's care intensity was inversely associated with self-reported incorporation of costs and patient values into clinical decisions but not with other self-reported behaviors.

CONCLUSIONS

U.S. IM residents reported varying HVC knowledge and practice. Faculty discussions of HVC during patient care correlated with such knowledge and practice and may represent an opportunity to improve residents' competency in providing value-based care.

Provider Differences in Use of Implanted Ports in Older Adults With Cancer

BACKGROUND

Identifying unwarranted variation in health care can highlight opportunities to reduce harm. One often discretionary process in oncology is use of implanted ports to administer intravenous chemotherapy. While there are benefits, ports carry risks. This study's objective was to assess provider-driven variation in port use among cancer patients receiving chemotherapy.

RESEARCH DESIGN

Retrospective assessment using population-based SEER-Medicare data to assess differences in port use across health care providers of older adults with cancer. Participants included over 18,000 patients ages 66 and older diagnosed with breast, colorectal, lung, or pancreatic cancer in 2005-2007, treated by approximately 2900 providers. We identified port use for patients receiving treatment from hospital outpatient facilities versus physicians' offices. Our main analysis assessed the likelihood of a patient receiving a port given port use by the provider's last patient. For a subset of high-use providers, we examined individual provider-level variation by estimating the risk-adjusted likelihood of insertion.

RESULTS

Patients receiving chemotherapy in hospital outpatient facilities were significantly less likely to receive a port than those treated in physicians' offices, with adjusted odds ratios (AOR) varying from 0.50 to 0.75 across cancer sites. Implanting a port was associated with increased likelihood of port insertion in the provider's next patient (AOR varied from 1.71 to 2.25). Significant between-provider variation was found among providers with at least 10 patients.

CONCLUSIONS

Our findings support the idea that there is provider-driven variation in the use of ports for chemotherapy administration. This variation highlights an opportunity to standardize practice and reduce unnecessary use.

Factors associated with access to rheumatologists for Medicare patients

OBJECTIVE

Despite looming rheumatologist shortages and a growing number of patients with arthritis and other rheumatic conditions, nationwide estimates of access to rheumatology care have never been reported. We aimed to measure travel times as a proxy to access to care and to determine the individual and area-level factors associated with long travel times to rheumatologists in the U.S.

METHODS

We used Medicare Part B claims for the 2009 Medicare Chronic Condition Warehouse 5% rheumatoid arthritis/osteoarthritis cohort. Using Google Maps we estimated driving time from the center of a beneficiary's home ZIP code to the center of their rheumatologist's office ZIP code. We examined predictors of travel time ≥90 min in a series of generalized linear mixed models adjusting for rheumatologist supply, rurality, and individual patient characteristics including age, race, gender, and income.

RESULTS

We included 41,693 Medicare beneficiaries with 1 or more visits to a rheumatologist in 2009. The median estimated beneficiary travel time to a rheumatologist was 22 min [interquartile range (IQR): 12-40 min]. Overall, 7% of beneficiaries traveled 90 min or longer to visit a rheumatologist. Even after adjusting for covariates, independent predictors of long travel times included living in areas with no or low supply of rheumatologists and living in the Mountain region of the U.S.

CONCLUSIONS

A small but significant proportion of patients in the U.S. traveled very long distances to visit a rheumatologist, and most of these individuals resided in areas with no or low supplies of rheumatologists. These data suggest that addressing shortages in rheumatology care for patients in low-supply areas is a key target for improving access to rheumatologists.

Variation in Inpatient Consultation Among Older Adults in the United States

BACKGROUND

Differences among hospitals in the use of inpatient consultation may contribute to variation in outcomes and costs for hospitalized patients, but basic epidemiologic data on consultations nationally are lacking.

OBJECTIVE

The purpose of the study was to identify physician, hospital, and geographic factors that explain variation in rates of inpatient consultation.

DESIGN

This was a retrospective observational study.

SETTING AND PARTICIPANTS

This work included 3,118,080 admissions of Medicare patients to 4,501 U.S. hospitals in 2009 and 2010.

MAIN MEASURES

The primary outcome measured was number of consultations conducted during the hospitalization, summarized at the hospital level as the number of consultations per 1,000 Medicare admissions, or "consultation density."

KEY RESULTS

Consultations occurred 2.6 times per admission on average. Among non-critical access hospitals, use of consultation varied 3.6-fold across quintiles of hospitals (933 versus 3,390 consultations per 1,000 admissions, lowest versus highest quintiles, p < 0.001). Sicker patients received greater intensity of consultation (rate ratio [RR] 1.18, 95% CI 1.17-1.18 for patients admitted to ICU; and RR 1.19, 95% CI 1.18-1.20 for patients who died). However, even after controlling for patient-level factors, hospital characteristics also predicted differences in rates of consultation. For example, hospital size (large versus small, RR 1.31, 95% CI 1.25-1.37), rural location (rural versus urban, RR 0.78, CI 95% 0.76-0.80), ownership status (public versus not-for-profit, RR 0.94, 95% CI 0.91-0.97), and geographic quadrant (Northeast versus West, RR 1.17, 95% CI 1.12-1.21) all influenced the intensity of consultation use.

CONCLUSIONS

Hospitals exhibit marked variation in the number of consultations per admission in ways not fully explained by patient characteristics. Hospital "consultation density" may constitute an important focus for monitoring resource use for hospitals or health systems.

Practice Arrangement and Medicare Physician Payment in Otolaryngology

Objective

Medicare Part B physician payment indicates a cost to Medicare beneficiaries for a physician service and connotes physician clinical productivity. The objective of this study was to determine whether there was an association between practice arrangement and Medicare physician payment.

Study Design

Cross-sectional study.

Setting

Medicare provider utilization and payment data.

Subjects and Methods

Otolaryngologists from 1 metropolitan area were included as part of a pilot study. A generalized linear model was used to determine the effect of practice-specific variables including patient volumes on physician payment.

Results

Of 67 otolaryngologists included, 23 (34%) provided services through an independent practice, while others were employed by 1 of 3 local academic centers. Median payment was $58,895 per physician for the year, although some physicians received substantially higher payments. Reimbursements to faculty at 1 academic department were higher than to those at other institutions or to independent practitioners. After adjustments were made for patient volumes, physician subspecialty, and gender, payments to each faculty at Hospital C were 2 times higher than to those at Hospital A (relative ratio [RR] 2.03; 95% CI, 1.27-3.27; P = .003); 2 times higher than to faculty at Hospital B (RR 2.04; 95% CI, 1.4-2.7; P = .0001); and 1.6 times higher than to independent practitioners (RR 1.6; 95% CI, 1.04-2.7; P = .03). Payments to physicians in the other groups were not significantly different. Differences in reimbursement corresponded to an emphasis on procedures over office visits but not Medicare case mix adjustments for patient discharges from associated institutions.

Conclusions

Variation in the cost of academic otolaryngology care may be subject in part to institutional factors.

Patient sharing and quality of care: measuring outcomes of care coordination using claims data

BACKGROUND

With the goal of improving clinical efficiency and effectiveness, programs to enhance care coordination are a major focus of health care reform.

OBJECTIVE

To examine whether "care density"--a claims-based measure of patient sharing by office-based physicians--is associated with measures of quality. Care density is a proxy measure that may reflect how frequently a patient's doctors collaborate.

RESEARCH DESIGN

Cohort study using administrative databases from 3 large commercial insurance plans.

SUBJECTS

A total of 1.7 million adult patients; 31,675 with congestive heart failure, 78,530 with chronic obstructive pulmonary disease, and 240,378 with diabetes.

MEASURES

Care density was assessed in 2008. Prevention Quality Indicators (PQIs), 30-day readmissions, and Healthcare Effectiveness Data and Information Set quality indicators were measured in the following year.

RESULTS

Among all patients, we found that patients with the highest care density density--indicating high levels of patient sharing among their office-based physicians--had significantly lower rates of adverse events measured as PQIs compared with patients with low-care density (odds ratio=0.88; 95% confidence interval, 0.85-0.92). A significant association between care density and PQIs was also observed for patients with diabetes mellitus but not congestive heart failure or chronic obstructive pulmonary disease. Diabetic patients with higher care density scores had significantly lower odds of 30-day readmissions (odds ratio=0.68, 95% confidence interval, 0.48-0.97). Significant associations were observed between care density and Healthcare Effectiveness Data and Information Set measures although not always in the expected direction.

CONCLUSION

In some settings, patients whose doctors share more patients had lower odds of adverse events and 30-day readmissions.

Another Pill, Another Test, and Another Procedure: One Resident's Reflection on Healthcare Cost Containment

In the United States, healthcare expenditures have continued to rise at alarming rates despite numerous strategies to contain costs. One area of focus that is underappreciated is doctor-patient communication about expectations of treatment. Studies have shown that clinicians' misperceptions of assumptions about patients' expectations are an essential component to our nation's healthcare overuse problem. Strategies to address these misperceptions and assumptions as a method of reducing costs and providing higher-quality care to our patients are warranted.

The role of training environment care intensity in US physician cost consciousness

OBJECTIVE

To examine a potential relationship between training environment and physician views about cost consciousness.

PARTICIPANTS AND METHODS

This was a cross-sectional study of US physicians who responded to the Physicians, Health Care Costs, and Society survey conducted between May 30, 2012, and September 30, 2012, for whom information was available about the care intensity environment of their residency training hospital. The exposure of interest was a measure of the health care utilization environment during residency from the Dartmouth Atlas of Health Care Hospital Care Intensity (HCI) index of primary training hospitals. The main outcome measure was agreement with an 11-point cost-consciousness scale. The generalized estimating equations method was used to measure the association between exposure and outcome.

RESULTS

Of the 2556 physicians who responded to the survey, 2424 had a valid HCI index (95%), representing 649 residency programs. The mean ± SD cost-consciousness score among physicians trained at hospitals in the lowest quartile of care intensity (31.8±5.0) was higher than that for physicians trained at hospitals in the top quartile of care intensity (30.7±5.1; P<.001). Adjusting for other physician and practice characteristics, a population of physicians trained in hospitals with a 1.0-point higher HCI index would score approximately 0.83 points lower on the cost-consciousness scale (beta coefficient = -0.83; 95% CI, -1.60 to -0.05; P=.04).

CONCLUSION

The intensity of the health care utilization environment during training may play a role in shaping physician cost consciousness later in their careers.

Will Choosing Wisely® improve quality and lower costs of care for patients with critical illness?

In 2009, a group of experts convened by the Institute of Medicine estimated that 30% of health care costs amounted to waste, including a substantial share from nonbeneficial and often harmful services. Professional organizations and medical ethicists subsequently called on specialty groups to generate "top five" lists of expensive tests or treatments without known benefits. Responding to this call, the American Board of Internal Medicine launched its Choosing Wisely campaign, with the top-five Choosing Wisely lists for pulmonary medicine and critical care released in 2014. In order for the critical care list to have an impact on costs and quality, two things must occur: providers whose practice is discordant with the list must adhere to the list when making decisions, and those decisions must lead to improvements in the quality of care at lower costs. Although the campaign addresses some limitations of past efforts to improve quality and reduce waste, we believe it will do little to change provider behavior. Even if the top-five list for critical care were to change the behavior of providers, its ultimate impact on costs and quality will be lower than anticipated. Here we suggest several strategies for stakeholders to increase the impact of the critical care top-five list, and further discuss that despite limitations of the campaign it is still imperative for advancing best practice in critical care.

Invasive procedures in the elderly after stage IV cancer diagnosis

BACKGROUND

Invasive procedures are resource intense and may be associated with substantial morbidity. These harms must be carefully balanced with the benefits gained in life expectancy and quality of life. Prior research has demonstrated an increasing aggressiveness of care in cancer patients at the end-of-life. To better characterize surgical care in this setting, we sought to examine trends in the use of invasive procedures in patients diagnosed with metastatic cancer on presentation.

MATERIALS AND METHODS

Using Surveillance Epidemiology and End Results -Medicare data, we identified invasive procedure claims from 1994-2009 for patients diagnosed with incident stage IV breast, colorectal, lung, and prostate cancer patients in 1995-2006. We grouped procedures into surgically relevant categories, using an adaptation of the Clinical Classifications Software, and measured utilization and relative changes over time.

RESULTS

Of stage IV patients diagnosed in 2002-2006, 96% underwent a procedure during the course of their cancer care including 63% after the diagnostic period, and 25% in the last month of life. Between 1996 and 2006, minimal change was observed in utilization during the diagnostic period (+1.5%). However, there were significant increases during continuing care (+20.7%) and the last month of life (+21.5%). Procedures consistent with primary tumor resection decreased, whereas those with probable palliative intent and those unrelated to cancer increased.

CONCLUSIONS

Nearly all patients who present with metastatic cancer undergo invasive procedures. Although overall utilization is increasing, the specific procedure types indicate that it may be appropriate, enhancing the quality of life in this vulnerable population.

Prescribing style and variation in antibiotic prescriptions for sore throat: cross-sectional study across six countries

Background

Variation in prescription of antibiotics in primary care can indicate poor clinical practice that contributes to the increase of resistant strains. General Practitioners (GPs), as a professional group, are expected to have a fairly homogeneous prescribing style. In this paper, we describe variation in prescribing style within and across groups of GPs from six countries.

Methods

Cross-sectional study with the inclusion of 457 GPs and 6394 sore throat patients. We describe variation in prescribing antibiotics for sore throat patients across six countries and assess whether variation in “prescribing style” – understood as a subjective tendency to prescribe – has an important effect on variation in prescription of antibiotics by using the concept of prescribing style as a latent variable in a multivariable model. We report variation as a Median Odds Ratio (MOR) which is the transformation of the random effect variance onto an odds ratio; Thus, MOR = 1 means similar odds or strict homogeneity between GPs’ prescribing style, while a MOR higher than 1 denotes heterogeneity in prescribing style.

Results

In all countries some GPs always prescribed antibiotics to all their patients, while other GPs never did. After adjusting for patient and GP characteristics, prescribing style in the group of GPs from Russia was about three times more heterogeneous than the prescribing style in the group of GPs from Denmark – Median Odds Ratio (6.8, 95% CI 3.1;8.8) and (2.6, 95% CI 2.2;4.4) respectively.

Conclusion

Prescribing style is an important source of variation in prescription of antibiotics within and across countries, even after adjusting for patient and GP characteristics. Interventions aimed at influencing the prescribing style of GPs must encompass context-specific actions at the policy-making level alongside GP-targeted interventions to enable GPs to react more objectively to the external demands that are in place when making the decision of prescribing antibiotics or not.

Surgical assessment: measuring unobserved health

Background

The federal and provincial governments in Canada have invested an enormous amount of resources to measure, report and reduce surgical wait times. Yet these measures under-report the wait period that patients’ actually experience, because they do not capture the length of time a patient spends waiting to see the surgeon for a surgical assessment. This unmeasured time is referred to as the “wait one” (W1). Little is known about W1 and the effects that this has on patients’ health. Similarly, it is not understood whether patients waiting for surgical assessment actually want or need surgery. Existing administrative and clinical dataset do not capture information on health and decision-making while the patient is waiting for care form a specialist. The objective of this proposed study is to understand the impact that W1 for elective surgeries has on the health of patients and to determine whether this time can be reduced.

Methods/Design

A prospective survey design will be used to measure the health of patients waiting for surgical assessment. Working with the support of the surgical specialities in Vancouver Coastal Health, we will survey patients immediately after being referred for surgical assessment, and every four months thereafter, until they are seen by the surgeon.

Validated survey instruments will be used, including: generic and condition-specific health status questionnaires, pain and depression assessments. Other factors that will be measured include: patients’ knowledge about their condition, and their desired autonomy in the decision making process. We have piloted data collection in one surgical specialty in order to demonstrate feasibility.

Discussion

The results from this study will be used to quantify changes in patients’ health while they wait for surgical assessment. Based on this, policy- and decision-makers could design care interventions during W1, aimed at mitigating any negative health consequences associated with waiting. The results from this study will also be used to better understand whether there are factors that predict patients’ desire to proceed to surgery. These could be used to guide future research into experimenting with interventions to minimize inappropriate referrals and where they are best targeted.

Does seeing the doctor more often keep you out of the hospital?

By exploiting a unique health insurance benefit design, we provide novel evidence on the causal association between outpatient and inpatient care. Our results indicate that greater outpatient spending was associated with more hospital admissions: a $100 increase in outpatient spending was associated with a 1.9% increase in the probability of having an inpatient event and a 4.6% increase in inpatient spending among enrollees in our sample. Moreover, we present evidence that the increase in hospital admissions associated with greater outpatient spending was for conditions in which it is plausible to argue that the physician and patient could exercise discretion.

State variation in health care spending and the politics of state Medicaid policy

This study investigates the factors that underlie large variation in Medicaid and Children's Health Insurance Program (CHIP) policies among states. Both eligibility and provider payment policies are examined for low-income children and parents. I find that state variation in the cost of providing health care, due to variation in the intensity of health care use, is a key determinant of eligibility policies, and I also find tentative evidence of an effect for payment policies. Because rising health care spending increases the cost of providing health insurance coverage, state policy makers in high-spending states enact less generous Medicaid and CHIP policies. Results also indicate that the political environments of states are very important in determining their eligibility policies, but fewer political variables influence payment policies. In addition to including variables not yet examined in the context of Medicaid policy, this study uses an innovative measure of state-level health care spending and carefully constructed dependent variables that lend credibility to causal interpretations of relationships.

Regulatory focus affects physician risk tolerance

Risk tolerance is a source of variation in physician decision-making. This variation, if independent of clinical concerns, can result in mistaken utilization of health services. To address such problems, it will be helpful to identify nonclinical factors of risk tolerance, particularly those amendable to intervention-regulatory focus theory suggests such a factor. This study tested whether regulatory focus affects risk tolerance among primary care physicians. Twenty-seven primary care physicians were assigned to promotion-focused or prevention-focused manipulations and compared on the Risk Taking Attitudes in Medical Decision Making scale using a randomization test. Results provide evidence that physicians assigned to the promotion-focus manipulation adopted an attitude of greater risk tolerance than the physicians assigned to the prevention-focused manipulation (p = 0.01). The Cohen's d statistic was conventionally large at 0.92. Results imply that situational regulatory focus in primary care physicians affects risk tolerance and may thereby be a nonclinical source of practice variation. Results also provide marginal evidence that chronic regulatory focus is associated with risk tolerance (p = 0.05), but the mechanism remains unclear. Research and intervention targeting physician risk tolerance may benefit by considering situational regulatory focus as an explanatory factor.

The association between residency training and internists' ability to practice conservatively

IMPORTANCE

Growing concern about rising costs and potential harms of medical care has stimulated interest in assessing physicians' ability to minimize the provision of unnecessary care.

OBJECTIVE

To assess whether graduates of residency programs characterized by low-intensity practice patterns are more capable of managing patients' care conservatively, when appropriate, and whether graduates of these programs are less capable of providing appropriately aggressive care.

DESIGN, SETTING, AND PARTICIPANTS

Cross-sectional comparison of 6639 first-time takers of the 2007 American Board of Internal Medicine certifying examination, aggregated by residency program (n = 357).

EXPOSURES

Intensity of practice, measured using the End-of-Life Visit Index, which is the mean number of physician visits within the last 6 months of life among Medicare beneficiaries 65 years and older in the residency program's hospital referral region.

MAIN OUTCOMES AND MEASURES

The mean score by program on the Appropriately Conservative Management (ACM) (and Appropriately Aggressive Management [AAM]) subscales, comprising all American Board of Internal Medicine certifying examination questions for which the correct response represented the least (or most, respectively) aggressive management strategy. Mean scores on the remainder of the examination were used to stratify programs into 4 knowledge tiers. Data were analyzed by linear regression of ACM (or AAM) scores on the End-of-Life Visit Index, stratified by knowledge tier.

RESULTS

Within each knowledge tier, the lower the intensity of health care practice in the hospital referral region, the better residency program graduates scored on the ACM subscale (P < .001 for the linear trend in each tier). In knowledge tier 4 (poorest), for example, graduates of programs in the lowest-intensity regions had a mean ACM score in the 38th percentile compared with the 22nd percentile for programs in the highest-intensity regions; in tier 2, ACM scores ranged from the 75th to the 48th percentile in regions from lowest to highest intensity. Graduates of programs in low-intensity regions tended, more weakly, to score better on the AAM subscale (in 3 of 4 knowledge tiers).

CONCLUSIONS AND RELEVANCE

Regardless of overall medical knowledge, internists trained at programs in hospital referral regions with lower-intensity medical practice are more likely to recognize when conservative management is appropriate. These internists remain capable of choosing an aggressive approach when indicated.

Is anyone listening? Variation in PSA screening among providers for men 75+ before and after United States Preventive Services Task Force recommendations against it: a retrospective cohort study

Background

In 2008, the United States Preventive Services Task Force recommended against prostate specific antigen (PSA) testing for cancer screening in men age 75+.

Purpose

To assess PSA screening by primary care physicians (PCPs) before and after recommendations.

Methods

In 2013, this retrospective cohort study analyzed PCPs in Texas with 20+ male patients aged 75+ in both 2007 and 2010, with Parts A and B Medicare. The main outcome was percent of PCP’s male patients 75+ who received PSA testing ordered by the PCP in 2007 and 2010, with no recent symptoms suggestive of prostate cancer.

Results

In both 2007 and 2010, 1,083 PCPs cared for at least 20 men aged 75 or older. The rate of PSA screening ordered by PCPs was 33.2% in 2007 and 30.6% in 2010. In multilevel analyses controlling for patient characteristics, the variation in PSA screening attributable to the PCP (intraclass correlation coefficient) increased from 23% in 2007 to 26% in 2010, p<0.001. Men with PCPs older than age 60 had 9% lower odds (95% CI, 1–17%) in 2010 compared to 2007 of receiving a PSA test, vs. a 4% increase (95% CI, 4% decrease to 12% increase) in men with PCPs aged 50 or younger. Patients with Board Certified PCPs had a 12% lower odds (95% CI, 8% to 16%) from 2007 to 2010, vs. 2% increase (95% CI 11% decrease to 18% increase) in men with PCPs without board certification.

Conclusions

The USPSTF recommendation did not increase consensus among PCPs regarding PSA screening of older men.

Controlling health costs: physician responses to patient expectations for medical care

BACKGROUND

Physicians have dual responsibilities to make medical decisions that serve their patients' best interests but also utilize health care resources wisely. Their ability to practice cost-consciously is particularly challenged when faced with patient expectations or requests for medical services that may be unnecessary.

OBJECTIVE

To understand how physicians consider health care resources and the strategies they use to exercise cost-consciousness in response to patient expectations and requests for medical care.

DESIGN

Exploratory, qualitative focus groups of practicing physicians were conducted. Participants were encouraged to discuss their perceptions of resource constraints, and experiences with redundant, unnecessary and marginally beneficial services, and were asked about patient requests or expectations for particular services.

PARTICIPANTS

Sixty-two physicians representing a variety of specialties and practice types participated in nine focus groups in Michigan, Ohio, and Minnesota in 2012 MEASUREMENTS: Iterative thematic content analysis of focus group transcripts

PRINCIPAL FINDINGS

Physicians reported making trade-offs between a variety of financial and nonfinancial resources, considering not only the relative cost of medical decisions and alternative services, but the time and convenience of patients, their own time constraints, as well as the logistics of maintaining a successful practice. They described strategies and techniques to educate patients, build trust, or substitute less costly alternatives when appropriate, often adapting their management to the individual patient and clinical environment.

CONCLUSIONS

Physicians often make nuanced trade-offs in clinical practice aimed at efficient resource use within a complex flow of clinical work and patient expectations. Understanding the challenges faced by physicians and the strategies they use to exercise cost-consciousness provides insight into policy measures that will address physician's roles in health care resource use.

Keeping up with the Cadillacs: What Health Insurance Disparities, Moral Hazard, and the Cadillac Tax Mean to The Patient Protection and Affordable Care Act

A major goal of The Patient Protection and Affordable Care Act is to broaden health care access through the extension of insurance coverage. However, little attention has been given to growing disparities in access to health care among the insured, as trends to reduce benefits and increase cost sharing (deductibles, co-pays) reduce affordability and access. Through a political economic perspective that critiques moral hazard, this article draws from ethnographic research with the United Steelworkers (USW) at a steel mill and the Retail, Wholesale and Department Store Union (RWDSU) at a food-processing plant in urban Central Appalachia. In so doing, this article describes difficulties of health care affordability on the eve of reform for differentially insured working families with employer-sponsored health insurance. Additionally, this article argues that the proposed Cadillac tax on high-cost health plans will increase problems with appropriate health care access and medical financial burden for many families.

Orthopaedic Surgery Under National Health Reform: An Analysis of Power, Process, Adaptation, and Leadership: AOA Critical Issues

Morrison argued that demography, economy, and technology drive the evolution of industries from a formative first-generation state ("First Curve") to a radically different way of doing things ("Second Curve") that is marked by new skills, strategies, and partners. The current health-reform movement in the United States reflects these three key evolutionary trends: surging medical needs of an aging population, dramatic expansion of Medicare spending, and care delivery systems optimized through powerful information technology. Successful transition from a formative first-generation state (First Curve) to a radically different way of doing things (Second Curve) will require new skills, strategies, and partners. In a new world that is value-driven, community-centric (versus hospital-centric), and prevention-focused, orthopaedic surgeons and health-care administrators must form new alliances to reduce the cost of care and improve durable outcomes for musculoskeletal problems. The greatest barrier to success in the Second Curve stems not from lack of empirical support for integrated models of care, but rather from resistance by those who would execute them. Porter's five forces of competitive strategy and the behavioral analysis of change provide insights into the predictable forms of resistance that undermine clinical and economic success in the new environment of care. This paper analyzes the components that will differentiate orthopaedic care provision for the Second Curve. It also provides recommendations for future-focused orthopaedic surgery and health-care administrative leaders to consider as they design newly adaptive, mutually reinforcing, and economically viable musculoskeletal care processes that drive the level of orthopaedic care that our nation deserves-at a cost that it can afford.

On the Outcome Project

BACKGROUND

In 2001, graduate medical education in the United States was renovated to better complement 21st century developments in American medicine, society, and culture. As in 1910, when Abraham Flexner was charged to address a relatively non-standardized system that lacked accountability and threatened credibility of the profession, Dr. David Leach led the Accreditation Council of Graduate Medical Education (ACGME) Outcome Project in a process that has substantially changed medical pedagogy in the United States.

METHODS

Brief review of the Flexner Report of 1910 and 6 hours of interviews with leaders of the Outcome Project (4 hours with Dr. David Leach and 1-hour interviews with Drs. Paul Batalden and Susan Swing).

RESULTS

Medical educational leaders and the ACGME concluded in the late 1990s that medical education was not preparing clinicians sufficiently for lifelong learning in the 21st century. A confluence of medical, social, and historic factors required definitions and a common vocabulary for teaching and evaluating medical competency. After a deliberate consensus-driven process, the ACGME and its leaders produced a system requiring greater accountability of learners and teachers, in six explicitly defined domains of medical "competence." While imperfect, this construct has started to take hold, creating a common vocabulary for longitudinal learning, from undergraduate to post-graduate (residency) education and in the assessment of performance following graduate training.

Associations between primary healthcare and unplanned medical admissions in Norway: a multilevel analysis of the entire elderly population

OBJECTIVE

To examine if individual risk of unplanned medical admissions (UMAs) was associated with municipality general practitioner (GP) or long-term care (LTC) volume among the entire Norwegian elderly population.

DESIGN

Cross-sectional population-based study.

SETTING

428 of 430 Norwegian municipalities in 2009.

PARTICIPANTS

All Norwegians aged ≥65 years (n=721 915; 56% women-15% of the total population).

MAIN OUTCOME MEASURE

Individual risk of UMA.

RESULTS

Using a multilevel analytical framework, consisting of individuals (N=722 464) nested within municipalities (N=428), nested within local hospital areas (N=52) we found no association between municipality GP or LTC volume and UMAs. However, we found that higher LTC levels of provision were associated with fewer hospitalisations among the older age groups. A modest geographical variability was observed for UMA in adjusted analysis.

CONCLUSIONS

A higher primary healthcare volume was only associated with fewer UMAs among the oldest old in a universally accessible healthcare system.

A population health approach to reducing observational intensity bias in health risk adjustment: cross sectional analysis of insurance claims

OBJECTIVE

To compare the performance of two new approaches to risk adjustment that are free of the influence of observational intensity with methods that depend on diagnoses listed in administrative databases.

SETTING

Administrative data from the US Medicare program for services provided in 2007 among 306 US hospital referral regions.

DESIGN

Cross sectional analysis.

PARTICIPANTS

20% sample of fee for service Medicare beneficiaries residing in one of 306 hospital referral regions in the United States in 2007 (n = 5,153,877).

MAIN OUTCOME MEASURES

The effect of health risk adjustment on age, sex, and race adjusted mortality and spending rates among hospital referral regions using four indices: the standard Centers for Medicare and Medicaid Services--Hierarchical Condition Categories (HCC) index used by the US Medicare program (calculated from diagnoses listed in Medicare's administrative database); a visit corrected HCC index (to reduce the effects of observational intensity on frequency of diagnoses); a poverty index (based on US census); and a population health index (calculated using data on incidence of hip fractures and strokes, and responses from a population based annual survey of health from the Centers for Disease Control and Prevention).

RESULTS

Estimated variation in age, sex, and race adjusted mortality rates across hospital referral regions was reduced using the indices based on population health, poverty, and visit corrected HCC, but increased using the standard HCC index. Most of the residual variation in age, sex, and race adjusted mortality was explained (in terms of weighted R2) by the population health index: R2=0.65. The other indices explained less: R2=0.20 for the visit corrected HCC index; 0.19 for the poverty index, and 0.02 for the standard HCC index. The residual variation in age, sex, race, and price adjusted spending per capita across the 306 hospital referral regions explained by the indices (in terms of weighted R2) were 0.50 for the standard HCC index, 0.21 for the population health index, 0.12 for the poverty index, and 0.07 for the visit corrected HCC index, implying that only a modest amount of the variation in spending can be explained by factors most closely related to mortality. Further, once the HCC index is visit corrected it accounts for almost none of the residual variation in age, sex, and race adjusted spending.

CONCLUSION

Health risk adjustment using either the poverty index or the population health index performed substantially better in terms of explaining actual mortality than the indices that relied on diagnoses from administrative databases; the population health index explained the majority of residual variation in age, sex, and race adjusted mortality. Owing to the influence of observational intensity on diagnoses from administrative databases, the standard HCC index over-adjusts for regional differences in spending. Research to improve health risk adjustment methods should focus on developing measures of risk that do not depend on observation influenced diagnoses recorded in administrative databases.

Validating a vignette-based instrument to study physician decision making in trauma triage

BACKGROUND

The evidence supporting the use of vignettes to study physician decision making comes primarily from the study of low-risk decisions and the demonstration of good agreement at the group level between vignettes and actual practice. The validity of using vignettes to predict decision making in more complex, high-risk contexts and at the individual level remains unknown.

METHODS

We had previously developed a vignette-based instrument to study physician decision making in trauma triage. Here, we measured the retest reliability, internal consistency, known-groups performance, and criterion validity of the instrument. Thirty-two emergency physicians, recruited at a national academic meeting, participated in reliability testing. Twenty-eight trauma surgeons, recruited using personal contacts, participated in known-groups testing. Twenty-eight emergency physicians, recruited from physicians working at hospitals for which we had access to medical records, participated in criterion validity testing. We measured rates of undertriage (the proportion of severely injured patients not transferred to trauma centers) and overtriage (the proportion of patients transferred with minor injuries) on the instrument. For physicians participating in criterion validity testing, we compared rates of triage on the instrument with rates in practice, based on chart review.

RESULTS

Physicians made similar transfer decisions for cases (κ = 0.42, P < 0.01) on 2 administrations of the instrument. Responses were internally consistent (Kuder-Richardson, 0.71-0.91). Surgeons had lower rates of undertriage than emergency physicians (13% v. 70%, P < 0.01). No correlation existed between individual rates of under- or overtriage on the vignettes and in practice (r = -0.17, P = 0.4; r = -0.03, P = 0.85).

CONCLUSIONS

The instrument developed to assess trauma triage decision making performed reliably and detected known group differences. However, it did not predict individual physician performance.

Does the type of provider and the place of residence matter in the utilization of prenatal ultrasonography? Evidence from Canada

BACKGROUND

There has been a proliferation of repeat prenatal ultrasound examinations per pregnancy in many developed countries over the past 20 years, yet few studies have examined the main determinants of the utilization of prenatal ultrasonography.

OBJECTIVE

The objective of this study was to examine the influence of the type of provider, place of residence and a wide range of socioeconomic and demographic factors on the frequency of prenatal ultrasounds in Canada, while controlling for maternal risk profiles.

METHODS

The study utilized the data set of the Maternity Experience Survey (MES) conducted by Statistics Canada in 2006. Using an appropriate count data regression model, the study assessed the influence of a wide range of socioeconomic, demographic, maternal risk factors and types of provider on the number of prenatal ultrasounds. The regression model was further extended by interacting providers with provinces to assess the differential influence of types of provider on the number of ultrasounds both across and within provinces.

RESULTS

The results suggested that, in addition to maternal risk factors, the number of ultrasounds was also influenced by the type of healthcare provider and geographic regions. Obstetricians/gynaecologists were likely to recommend more ultrasounds than family physicians, midwives and nurse practitioners. Similarly, birthing women who received their care in Ontario were likely to have more ultrasounds than women who received their prenatal care in other provinces/territories. Additional analysis involving interactions between providers and provinces suggested that the inter-provincial variations were particularly more pronounced for family physicians/general practitioners than for obstetricians/gynaecologists. Similarly, the results for intra-provincial variations suggested that compared with obstetricians/gynaecologists, family physicians/GPs ordered fewer ultrasound examinations in Prince Edward Island, British Columbia, Nova Scotia, Alberta and Newfoundland.

CONCLUSION

After controlling for a number of socioeconomic and demographic factors, as well as maternal risk factors, it was found that the type of provider and the province of prenatal care were statistically significant determinants of the frequency of use of ultrasounds. Additional analysis involving interactions between providers and provinces indicated wide intra- and inter-provincial variations in the use of prenatal ultrasounds. New policy measures are needed at the provincial and federal government levels to achieve more appropriate use of prenatal ultrasonography.

The relationship between extent of thyroid cancer surgery and use of radioactive iodine

By linking surgeon surveys to the National Cancer Database, we found that surgeons' tendency to perform more extensive thyroid resection is associated with greater use of radioactive iodine for stage I thyroid cancer.

OBJECTIVE

To determine the relationships between surgeon recommendations for extent of resection and radioactive iodine use in low-risk thyroid cancer.

BACKGROUND

There has been an increase in thyroid cancer treatment intensity; the relationship between extent of resection and medical treatment with radioactive iodine remains unknown.

METHODS

We randomly surveyed thyroid surgeons affiliated with 368 hospitals with Commission on Cancer-accredited cancer programs. Survey responses were linked to the National Cancer Database. The relationship between extent of resection and the proportion of the American Joint Committee on Cancer stage I well-differentiated thyroid cancer patients treated with radioactive iodine after total thyroidectomy was assessed with multivariable weighted regression, controlling for hospital and surgeon characteristics.

RESULTS

The survey response rate was 70% (560/804). Surgeons who recommend total thyroidectomy over lobectomy for subcentimeter unifocal thyroid cancer were significantly more likely to recommend prophylactic central lymph node dissection for thyroid cancer regardless of tumor size (P < 0.001). They were also more likely to favor radioactive iodine in patients with intrathyroidal unifocal cancer ≤1 cm (P = 0.001), 1.1-2 cm (P = 0.004), as well as intrathyroidal multifocal cancer ≤1 cm (P = 0.004). In multivariable analysis, high hospital case volume, fewer surgeon years of experience, general surgery specialty, and preference for more extensive resection were independently associated with greater hospital-level use of radioactive iodine for stage I disease.

CONCLUSIONS

In addition to surgeon experience and specialty, surgeons' tendency to perform more extensive thyroid resection is associated with greater use of radioactive iodine for stage I thyroid cancer.