Use of Data to Understand the Social Determinants of Depression in Two Middle-Income Countries: the 3-D Commission.

Depression accounts for a large share of the global disease burden, with an estimated 264 million people globally suffering from depression. Despite being one of the most common kinds of mental health (MH) disorders, much about depression remains unknown. There are limited data about depression, in terms of its occurrence, distribution, and wider social determinants. This work examined the use of novel data sources for assessing the scope and social determinants of depression, with a view to informing the reduction of the global burden of depression.This study focused on new and traditional sources of data on depression and its social determinants in two middle-income countries (LMICs), namely, Brazil and India. We identified data sources using a combination of a targeted PubMed search, Google search, expert consultations, and snowball sampling of the relevant literature published between October 2010 and September 2020. Our search focused on data sources on the following HEALTHY subset of determinants: healthcare (H), education (E), access to healthy choices (A), labor/employment (L), transportation (T), housing (H), and income (Y).Despite the emergence of a variety of data sources, their use in the study of depression and its HEALTHY determinants in India and Brazil are still limited. Survey-based data are still the most widely used source. In instances where new data sources are used, the most commonly used data sources include social media (twitter data in particular), geographic information systems/global positioning systems (GIS/GPS), mobile phone, and satellite imagery. Often, the new data sources are used in conjunction with traditional sources of data. In Brazil, the limited use of new data sources to study depression and its HEALTHY determinants may be linked to (a) the government's outsized role in coordinating healthcare delivery and controlling the data system, thus limiting innovation that may be expected from the private sector; (b) the government routinely collecting data on depression and other MH disorders (and therefore, does not see the need for other data sources); and (c) insufficient prioritization of MH as a whole. In India, the limited use of new data sources to study depression and its HEALTHY determinants could be a function of (a) the lack of appropriate regulation and incentives to encourage data sharing by and within the private sector, (b) absence of purposeful data collection at subnational levels, and (c) inadequate prioritization of MH. There is a continuing gap in the collection and analysis of data on depression, possibly reflecting the limited priority accorded to mental health as a whole. The relatively limited use of data to inform our understanding of the HEALTHY determinants of depression suggests a substantial need for support of independent research using new data sources. Finally, there is a need to revisit the universal health coverage (UHC) frameworks, as these frameworks currently do not include depression and other mental health-related indicators so as to enable tracking of progress (or lack thereof) on such indicators.

Association Among Opioid Use, Treatment Preferences, and Perceptions of Physician Treatment Recommendations in Patients With Neck and Back Pain.

OBJECTIVE: The purpose of this study was to explore the relationship between self-reported use of opioids by patients with neck and back pain and their demographics, pain characteristics, treatment preferences, and recollections of their physicians' opinions regarding treatment options. METHODS: We analyzed 2017 Gallup Poll survey data from 1680 US adults who had substantial spine pain in the past year and used logistic regression to explore the aforementioned relationships. RESULTS: Our multiple regression analysis indicated that adults with neck or back pain severe enough to have sought health care within the last year were more likely to have used opioids in the last year if they (in descending order of marginal impact) had pain that had lasted 1 year or less (adjusted odds ratio [OR] = 34.35, 90% confidence interval [CI] 17.56-74.32); concurrently used benzodiazepines (OR = 6.02, 90% CI 2.95-12.33); had Medicaid as an insurance source (OR = 3.29, 90% CI 1.40-7.48); indicated that they preferred to use pain medications prescribed by a doctor to treat physical pain (OR = 3.24, 90% CI 1.88-5.60); or were not college educated (OR = 1.83, 90% CI 1.05-3.25). Compared with patients aged 65 years and older, those aged 18 to 34 years were less likely to have used opioids in the past year (OR = 0.09, 90% CI 0.01-0.40, 0.50 for 95% CI). Respondents' perceptions of medical doctors' positive or negative opinions regarding a variety of neck and back pain treatment options were not significantly associated with opioid use. CONCLUSIONS: Patients with neck and back pain who use opioids differ from those who do not use opioids in that they are more likely to have pain that is of shorter duration, to use benzodiazepines, to have Medicaid as an insurance source, and to prefer to use pain medications. Those characteristics should be considered when developing opioid use prevention strategies.

Effect of Spinal Manipulation of Upper Cervical Vertebrae on Blood Pressure: Results of a Pilot Sham-Controlled Trial.

OBJECTIVE: The purpose of this pilot sham-controlled clinical trial was to estimate the treatment effect and safety of toggle recoil spinal manipulation for blood pressure management. METHODS: Fifty-one participants with prehypertension or stage 1 hypertension (systolic blood pressure ranging from 135 to 159 mm Hg or diastolic blood pressure ranging from 85 to 99 mm Hg) were allocated by an adaptive design to 2 treatments: toggle recoil spinal manipulation or a sham procedure. Participants were seen by a doctor of chiropractic twice weekly for 6 weeks and remained on their antihypertensive medications, as prescribed, throughout the trial. Blood pressure was assessed at baseline and after study visits 1, 6 (week 3), and 12 (week 6), with the primary end point at week 6. Analysis of covariance was used to compare mean blood pressure changes from baseline between groups at each end point, controlling for sex, age, body mass index, and baseline blood pressure. RESULTS: Adjusted mean change from baseline to week 6 was greater in the sham group (systolic, -4.2 mm Hg; diastolic, -1.6 mm Hg) than in the spinal manipulation group (systolic, 0.6 mm Hg; diastolic, 0.7 mm Hg), but the difference was not statistically significant. No serious and few adverse events were noted. CONCLUSIONS: Six weeks of toggle recoil spinal manipulation did not lower systolic or diastolic blood pressure when compared with a sham procedure. No serious adverse events from either treatment were reported. Our results do not support a larger clinical trial. Further research to understand the potential mechanisms of action involving upper cervical manipulation on blood pressure is warranted before additional clinical investigations are conducted.

Cross-Sectional Analysis of Per Capita Supply of Doctors of Chiropractic and Opioid Use in Younger Medicare Beneficiaries.

OBJECTIVE: The purpose of this study was to determine whether the per-capita supply of doctors of chiropractic (DCs) or Medicare spending on chiropractic care was associated with opioid use among younger, disabled Medicare beneficiaries. METHODS: Using 2011 data, at the hospital referral region level, we correlated the per-capita supply of DCs and spending on chiropractic manipulative therapy (CMT) with several measures of per-capita opioid use by younger, disabled Medicare beneficiaries. RESULTS: Per-capita supply of DCs and spending on CMT were strongly inversely correlated with the percentage of younger Medicare beneficiaries who had at least 1, as well as with 6 or more, opioid prescription fills. Neither measure was correlated with mean daily morphine equivalents per opioid user or per chronic opioid user. CONCLUSIONS: A higher per-capita supply of DCs and Medicare spending on CMT were inversely associated with younger, disabled Medicare beneficiaries obtaining an opioid prescription. However, neither measure was associated with opioid dosage among patients who obtained opioid prescriptions.

Characteristics of US Adults Who Have Positive and Negative Perceptions of Doctors of Chiropractic and Chiropractic Care.

OBJECTIVE: The purpose of this study was to compare characteristics, likelihood to use, and actual use of chiropractic care for US survey respondents with positive and negative perceptions of doctors of chiropractic (DCs) and chiropractic care. METHODS: From a 2015 nationally representative survey of 5422 adults (response rate, 29%), we used respondents' answers to identify those with positive and negative perceptions of DCs or chiropractic care. We used the χ(2) test to compare other survey responses for these groups. RESULTS: Positive perceptions of DCs were more common than those for chiropractic care, whereas negative perceptions of chiropractic care were more common than those for DCs. Respondents with negative perceptions of DCs or chiropractic care were less likely to know whether chiropractic care was covered by their insurance, more likely to want to see a medical doctor first if they were experiencing neck or back pain, less likely to indicate that they would see a DC for neck or back pain, and less likely to have ever seen a DC as a patient, particularly in the recent past. Positive perceptions of chiropractic care and negative perceptions of DCs appear to have greater influence on DC utilization rates than their converses. CONCLUSION: We found that US adults generally perceive DCs in a positive manner but that a relatively high proportion has negative perceptions of chiropractic care, particularly the costs and number of visits required by such care. Characteristics of respondents with positive and negative perceptions were similar, but those with positive perceptions were more likely to plan to use-and to have already received-chiropractic care.

The Association Between Use of Chiropractic Care and Costs of Care Among Older Medicare Patients With Chronic Low Back Pain and Multiple Comorbidities.

OBJECTIVE: The purpose of this study was to determine whether use of chiropractic manipulative treatment (CMT) was associated with lower healthcare costs among multiply-comorbid Medicare beneficiaries with an episode of chronic low back pain (cLBP). METHODS: We conducted an observational, retrospective study of 2006 to 2012 Medicare fee-for-service reimbursements for 72326 multiply-comorbid patients aged 66 and older with cLBP episodes and 1 of 4 treatment exposures: chiropractic manipulative treatment (CMT) alone, CMT followed or preceded by conventional medical care, or conventional medical care alone. We used propensity score weighting to address selection bias. RESULTS: After propensity score weighting, total and per-episode day Part A, Part B, and Part D Medicare reimbursements during the cLBP treatment episode were lowest for patients who used CMT alone; these patients had higher rates of healthcare use for low back pain but lower rates of back surgery in the year following the treatment episode. Expenditures were greatest for patients receiving medical care alone; order was irrelevant when both CMT and medical treatment were provided. Patients who used only CMT had the lowest annual growth rates in almost all Medicare expenditure categories. While patients who used only CMT had the lowest Part A and Part B expenditures per episode day, we found no indication of lower psychiatric or pain medication expenditures associated with CMT. CONCLUSIONS: This study found that older multiply-comorbid patients who used only CMT during their cLBP episodes had lower overall costs of care, shorter episodes, and lower cost of care per episode day than patients in the other treatment groups. Further, costs of care for the episode and per episode day were lower for patients who used a combination of CMT and conventional medical care than for patients who did not use any CMT. These findings support initial CMT use in the treatment of, and possibly broader chiropractic management of, older multiply-comorbid cLBP patients.

Comparing Propensity Score Methods for Creating Comparable Cohorts of Chiropractic Users and Nonusers in Older, Multiply Comorbid Medicare Patients With Chronic Low Back Pain.

OBJECTIVE: Patients who use complementary and integrative health services like chiropractic manipulative treatment (CMT) often have different characteristics than do patients who do not, and these differences can confound attempts to compare outcomes across treatment groups, particularly in observational studies when selection bias may occur. The purposes of this study were to provide an overview on how propensity scoring methods can be used to address selection bias by balancing treatment groups on key variables and to use Medicare data to compare different methods for doing so. METHODS: We described 2 propensity score methods (matching and weighting). Then we used Medicare data from 2006 to 2012 on older, multiply comorbid patients who had a chronic low back pain episode to demonstrate the impact of applying methods on the balance of demographics of patients between 2 treatment groups (those who received only CMT and those who received no CMT during their episodes). RESULTS: Before application of propensity score methods, patients who used only CMT had different characteristics from those who did not. Propensity score matching diminished observed differences across the treatment groups at the expense of reduced sample size. However, propensity score weighting achieved balance in patient characteristics between the groups and allowed us to keep the entire sample. CONCLUSIONS: Although propensity score matching and weighting have similar effects in terms of balancing covariates, weighting has the advantage of maintaining sample size, preserving external validity, and generalizing more naturally to comparisons of 3 or more treatment groups. Researchers should carefully consider which propensity score method to use, as using different methods can generate different results.

Public Perceptions of Doctors of Chiropractic: Results of a National Survey and Examination of Variation According to Respondents' Likelihood to Use Chiropractic, Experience With Chiropractic, and Chiropractic Supply in Local Health Care Markets.

OBJECTIVES: The purpose of this study was to determine whether general perceptions of doctors of chiropractic (DCs) varied according to likeliness to use chiropractic care, whether particular demographic characteristics were associated with chiropractic care use, and whether perception of DCs varied according to the per-capita supply of DCs in local health care markets. METHODS: We performed a secondary analysis of results from a 26-item nationally representative survey of 5422 members of The Gallup Panel that was conducted in the spring of 2015 (response rate, 29%) that sought to elicit the perceptions and use of DCs by US adults. We compared survey responses across: (1) respondents who had different likelihoods to use DCs for treatment of neck or back pain and (2) respondents who had different experiences using DCs. We linked respondents' zip codes to hospital referral regions for which we had the per-capita supply of DCs. Using the χ(2) test, we examined relationships between likeliness to use a DC, experience using a DC, respondent demographic variables, perceptions of DCs, and the per-capita supply of DCs in the local health care market. RESULTS: Most (61.4%) respondents believed that chiropractic care was effective at treating neck and back pain, 52.6% thought DCs were trustworthy, and 24.2% thought chiropractic care was dangerous; however, as respondents' likelihood to use a DC increased, perceptions of effectiveness and trustworthiness increased, and perceptions of danger decreased. Of all 5422 survey respondents, 744 or 13.7% indicated that they had seen a DC within the last 12 months. As one moved from distant to more recent experience using a DC, respondents were more likely to be female, married, white, and employed; those who had a distant history of using a DC were older and more likely to be retired than the other groups. A higher per-capita supply of DCs was associated with higher utilization rates and showed a more favorable regard for DCs. CONCLUSIONS: US adults often use chiropractic care, generally regard DCs favorably, and largely perceive that chiropractic care is safe. Where there is a higher per-capita supply of DCs in the local health care market, utilization and positive perceptions of chiropractic are higher.

Medicare's demonstration of expanded coverage for chiropractic services: limitations of the demonstration and an alternative direct cost estimate.

OBJECTIVE: The purposes of this study were to examine the direct costs associated with Medicare's 2005-2007 "Demonstration of Expanded Coverage of Chiropractic Services" (Demonstration) and their drivers, to explore practice pattern variation during the Demonstration, and to describe scenarios of cost implications had provider behavior and benefit coverage been different. METHODS: Using Medicare Part B data from April 1, 2005, and March 31, 2007, and 2004 Rural Urban Continuum Codes, we conducted a retrospective analysis of traditionally reimbursed and expanded chiropractic services provided to patients aged 65 to 99 years who had a neuromusculoskeletal condition. We compared chiropractic care costs, supply, and utilization patterns for the 2-year periods before, during, and after the Demonstration for 5 Chicago area counties that participated in the Demonstration to those for 6 other county aggregations-urban or rural counties that participated in the Demonstration; were designated comparison counties during the Demonstration; or were neither participating nor comparison counties during the Demonstration. RESULTS: When compared with other groups, doctors of chiropractic in 1 region (Chicago area counties) billed more aggressively for expanded services and were reimbursed significantly more for traditionally reimbursed chiropractic services provided before, during, and after the Demonstration. Costs would have been substantially lower had doctors of chiropractic in this 1 region had responded similarly to those in other demonstration counties. CONCLUSION: We found widespread geographic variation in practice behavior and patterns. Our findings suggest that Medicare might reduce the risk of accelerated costs associated with the introduction of a new benefit by applying appropriate limits to the frequency of use and overall costs of those benefits, particularly in highly competitive markets.

Meta-analysis of the efficacy of treatments for posttraumatic stress disorder.

OBJECTIVE: Posttraumatic stress disorder (PTSD) is an important mental health issue in terms of the number of people affected and the morbidity and functional impairment associated with the disorder. The purpose of this study was to examine the efficacy of all treatments for PTSD. DATA SOURCES: PubMed, MEDLINE, PILOTS, and PsycINFO databases were searched for randomized controlled clinical trials of any treatment for PTSD in adults published between January 1, 1980, and April 1, 2012, and written in the English language. The following search terms were used: post-traumatic stress disorders, posttraumatic stress disorder, PTSD, combat disorders, and stress disorders, post-traumatic. STUDY SELECTION: Articles selected were those in which all subjects were adults with a diagnosis of PTSD based on DSM criteria and a valid PTSD symptom measure was reported. Other study characteristics were systematically collected. The sample consisted of 137 treatment comparisons drawn from 112 studies. RESULTS: Effective psychotherapies included cognitive therapy, exposure therapy, and eye movement desensitization and reprocessing (g = 1.63, 1.08, and 1.01, respectively). Effective pharmacotherapies included paroxetine, sertraline, fluoxetine, risperidone, topiramate, and venlafaxine (g = 0.74, 0.41, 0.43, 0.41, 1.20, and 0.48, respectively). For both psychotherapy and medication, studies with more women had larger effects and studies with more veterans had smaller effects. Psychotherapy studies with wait-list controls had larger effects than studies with active control comparisons. CONCLUSIONS: Our findings suggest that patients and providers have a variety of options for choosing an effective treatment for PTSD. Substantial differences in study design and study participant characteristics make identification of a single best treatment difficult. Not all medications or psychotherapies are effective.

US spending on complementary and alternative medicine during 2002-08 plateaued, suggesting role in reformed health system.

Complementary and alternative medicine services in the United States are an approximately $9 billion market each year, equal to 3 percent of national ambulatory health care expenditures. Unlike conventional allopathic health care, complementary and alternative medicine is primarily paid for out of pocket, although some services are covered by most health insurance. Examining trends in demand for complementary and alternative medicine services in the United States reported in the Medical Expenditure Panel Survey during 2002-08, we found that use of and spending on these services, previously on the rise, have largely plateaued. The higher proportion of out-of-pocket responsibility for payment for services may explain the lack of growth. Our findings suggest that any attempt to reduce national health care spending by eliminating coverage for complementary and alternative medicine would have little impact at best. Should some forms of complementary and alternative medicine-for example, chiropractic care for back pain-be proven more efficient than allopathic and specialty medicine, the inclusion of complementary and alternative medicine providers in new delivery systems such as accountable care organizations could help slow growth in national health care spending.

The United States Chiropractic Workforce: An alternative or complement to primary care?

BACKGROUND: In the United States (US) a shortage of primary care physicians has become evident. Other health care providers such as chiropractors might help address some of the nation's primary care needs simply by being located in areas of lesser primary care resources. Therefore, the purpose of this study was to examine the distribution of the chiropractic workforce across the country and compare it to that of primary care physicians. METHODS: We used nationally representative data to estimate the per 100,000 capita supply of chiropractors and primary care physicians according to the 306 predefined Hospital Referral Regions. Multiple variable Poisson regression was used to examine the influence of population characteristics on the supply of both practitioner-types. RESULTS: According to these data, there are 74,623 US chiropractors and the per capita supply of chiropractors varies more than 10-fold across the nation. Chiropractors practice in areas with greater supply of primary care physicians (Pearson's correlation 0.17, p-value < 0.001) and appear to be more responsive to market conditions (i.e. more heavily influenced by population characteristics) in regards to practice location than primary care physicians. CONCLUSION: These findings suggest that chiropractors practice in areas of greater primary care physician supply. Therefore chiropractors may be functioning in more complementary roles to primary care as opposed to an alternative point of access.

The concentration of out-of-pocket expenditures on complementary and alternative medicine in the United States.

CONTEXT: The most intense spenders on health services are considerably less healthy.49% report fair or poor health status compared to 15% of the general adult population and are elderly. Such findings have important implications for addressing national health-care spending because interventions targeting those people who are in poor health could theoretically generate dramatic cost savings. Although the popularity of complementary and alternative medicine (CAM) in the United States is well recognized, little is known about the distribution of out-of-pocket expenditures on CAM services. OBJECTIVE: This study examined the distribution of out-of-pocket expenditures on CAM health services in the United States. DESIGN: The research team used data from the 2007 National Health Interview Survey to examine the distribution in the United States of out-of-pocket expenditures on CAM services and the characteristics of adult (age ≥ 18 years) CAM users (n = 2972) according to spending. OUTCOME MEASURES: Using complex survey-design methods, the research team generated national estimates of expenditures on CAM services and used linear regression adjusted for covariates to determine whether self-reported health status predicted CAM spending. RESULTS: According to our estimates, in 2007, over 30 million adults reported out-of-pocket expenditures on CAM services, and of these individuals, 7.2 million were heavy CAM spenders with a mean annual expenditure of $1385. The highest quartile of CAM spenders accounted for $10 billion of the $13.9 billion spent nationally on CAM in 2007. Self-reported health status did not differ among groups with differing levels of CAM spending, ß = 1.00 (95% CI, 0.8-1.2). CONCLUSIONS: Out-of-pocket spending on CAM is concentrated. Just a quarter of CAM users account for over 70% of all expenditures on CAM services, and health status does not appear to be associated with level of CAM spending.

Where the United States spends its spine dollars: expenditures on different ambulatory services for the management of back and neck conditions.

STUDY DESIGN: Serial, cross-sectional, nationally representative surveys of noninstitutionalized US adults. OBJECTIVE: To examine expenditures on common ambulatory health services for the management of back and neck conditions. SUMMARY OF BACKGROUND DATA: Although it is well recognized that national costs associated with back and neck conditions have grown considerably in recent years, little is known about the costs of care for specific ambulatory health services that are used to manage this population. METHODS: We used the Medical Expenditure Panel Survey to examine adult (aged 18 yr or older) respondents from 1999 to 2008 who sought ambulatory health services for the management of back and neck conditions. We used complex survey design methods to make national estimates of mean inflation-adjusted annual expenditures on medical care, chiropractic care, and physical therapy per user for back and neck conditions. RESULTS: Approximately 6% of US adults reported an ambulatory visit for a primary diagnosis of a back or neck condition (13.6 million in 2008). Between 1999 and 2008, the mean inflation-adjusted annual expenditures on medical care for these patients increased by 95% (from $487 to $950); most of the increase was accounted for by increased costs for medical specialists, as opposed to primary care physicians. During the study period, the mean inflation-adjusted annual expenditures on chiropractic care were relatively stable; although physical therapy was the most costly service overall, in recent years those costs have contracted. CONCLUSION: Although this study did not explore the relative effectiveness of different ambulatory services, recent increasing costs associated with providing medical care for back and neck conditions (particularly subspecialty care) are contributing to the growing economic burden of managing these conditions.

Influenza vaccination among chiropractic patients and other users of complementary and alternative medicine: are chiropractic patients really different?

OBJECTIVE: Previous studies suggest a possible association between using chiropractic care and lower influenza vaccination rates. We examined adult influenza vaccination rates for chiropractic patients to determine if they are different than those for users of other complementary and alternative medicine (CAM). METHOD: We used the 2007 National Health Interview Survey to examine influenza vaccination rates among adult respondents who were considered high priority for the influenza vaccine (n=12,164). We separated respondents into clinically meaningful categories according to age and whether or not they had recently used chiropractic care, some other type of CAM, or neither. We used adjusted logistic regression to determine whether user status predicted influenza vaccination. RESULTS: Only 33% of younger and 64% of older high priority Chiropractic Users were vaccinated in 2007; these rates approximated those of Non-CAM Users. However, younger Non-Chiropractic CAM Users were more likely than Non-CAM Users to have been vaccinated (p-value=0.05). In adjusted logistic regressions, we found statistically insignificant differences when comparing Chiropractic Users to Non-CAM Users for younger adults (OR=0.93(95% CI:0.76-1.13), or for older adults OR=0.90 (95% CI:0.64-1.20). CONCLUSION: Chiropractic Users appear no less likely to be vaccinated for influenza; whereas, younger Non-chiropractic CAM Users are more likely than Non-CAM Users to be vaccinated.

Complementary and alternative medicine practitioners and Accountable Care Organizations: the train is leaving the station.

Legislation that supports the establishment of Accountable Care Organizations (ACOs) was recently enacted into law as part of the Patient Protection and Affordable Care Act, and in 2012 the Centers for Medicare and Medicaid Services will begin contracting with ACOs. Although ACOs will play a significant role in reform of the U.S. health care delivery system, thus far, discussions have focused exclusively on the coordination of conventional health services. This article discusses the potential engagement of the complementary and alternative (CAM) workforce in ACOs and the foreseeable impacts of ACO legislation on the future of U.S. CAM services.

Health behaviors and utilization among users of complementary and alternative medicine for treatment versus health promotion.

OBJECTIVE: To compare the characteristics, health behaviors, and health services utilization of U.S. adults who use complementary and alternative medicine (CAM) to treat illness to those who use CAM for health promotion. DATA SOURCE: The 2007 National Health Interview Survey (NHIS). STUDY DESIGN: We compared adult (age ≥18 years) NHIS respondents based on whether they used CAM in the prior year to treat an illness (n=973), for health promotion (n=3,281), or for both purposes (n=3,031). We used complex survey design methods to make national estimates and examine respondents' self-reported health status, health behaviors, and conventional health services utilization. PRINCIPAL FINDINGS: Adults who used CAM for health promotion reported significantly better health status and healthier behaviors overall (higher rates of physical activity and lower rates of obesity) than those who used CAM as treatment. While CAM Users in general had higher rates of conventional health services utilization than those who did not use CAM; adults who used CAM as treatment consumed considerably more conventional health services than those who used it for health promotion. CONCLUSION: This study suggests that there are two distinct types of CAM User that must be considered in future health services research and policy decisions.

A proposed conceptual model for studying the use of complementary and alternative medicine.

A conceptual model has the ability to combine theories, illustrate relationships, and describe behaviors. We propose a conceptual model to describe the interrelated factors that dictate and influence complementary and alternative medicine (CAM) use in the United States based on sociologic theories including Parson's Sick Role and Suchman's Stages of Illness as well as the Andersen Sociobehavioral Model of health services utilization. In our conceptual model, we distinguish CAM use by symptomatic vs asymptomatic individuals, practitioner-based CAM services from products and self-administered CAM therapies, and the two ultimate endpoints: either the conclusion of CAM treatment or continuous CAM treatment. The development of our model underscores the importance of classifying CAM therapies based on the decision process of the CAM consumer rather than mechanism of action or CAM belief system in studying CAM health services utilization.

Higher health care quality and bigger savings found at large multispecialty medical groups.

The belief that integrated delivery systems offer better care at lower cost has contributed to growing interest in accountable care organizations. These provider-led delivery systems would accept responsibility for their primary care populations and would have financial incentives for improving care and reducing costs. We investigated this belief by comparing the costs and quality of care provided to Medicare beneficiaries in twenty-two health care markets by physicians who did and did not work within large multispecialty group practices affiliated with the Council of Accountable Physician Practices. In most markets, and after adjustment for patient factors, group physicians affiliated with the council provided higher-quality care at a 3.6 percent lower annual cost ($272 per patient).