Atherosclerosis evaluation and cardiovascular risk estimation using coronary computed tomography angiography

Clinical risk scores based on traditional risk factors of atherosclerosis correlate imprecisely to an individual's complex pathophysiological predisposition to atherosclerosis and provide limited accuracy for predicting major adverse cardiovascular events (MACE). Over the past two decades, computed tomography scanners and techniques for coronary computed tomography angiography (CCTA) analysis have substantially improved, enabling more precise atherosclerotic plaque quantification and characterization. The accuracy of CCTA for quantifying stenosis and atherosclerosis has been validated in numerous multicentre studies and has shown consistent incremental prognostic value for MACE over the clinical risk spectrum in different populations. Serial CCTA studies have advanced our understanding of vascular biology and atherosclerotic disease progression. The direct disease visualization of CCTA has the potential to be used synergistically with indirect markers of risk to significantly improve prevention of MACE, pending large-scale randomized evaluation.

Health-Related Social Control and Perceived Stress Among High-Risk Latina Mothers with Type 2 Diabetes and Their At-Risk Adult Daughters

BACKGROUND

Diabetes-related multi-morbidity and cultural factors place Latinas with diabetes at increased risk for stress, which can threaten illness management. Families provide an ideal focus for interventions that seek to strengthen interpersonal resources for illness management and, in the process, to reduce stress. The current study sought to examine whether participating in a dyadic intervention was associated with reduced perceived stress and, furthermore, whether this association was mediated by persuasion and pressure, two forms of health-related social control.

METHOD

Latina mothers with diabetes and their at-risk adult daughters participated in either (1) a dyadic intervention that encouraged constructive collaboration to improve health behaviors and reduce stress, or (2) a usual-care minimal control condition. Actor-partner interdependence model analysis was used to estimate the effect of the intervention on dyads' perceived stress, and mother-daughter ratings of health-related social control as potential mediators.

RESULTS

Results revealed that participating in the intervention was associated with significantly reduced perceived stress for daughters, but not for mothers (β =  - 3.00, p = 0.02; β =  - 0.57, p = 0.67, respectively). Analyses also indicated that the association between the intervention and perceived stress was mediated by persuasion, such that mothers' who experienced more health-related persuasion exhibited significantly less post-intervention perceived stress (indirect effect =  - 1.52, 95% CI = [- 3.12, - 0.39]). Pressure exerted by others, however, did not evidence a mediating mechanism for either mothers or daughters.

CONCLUSION

These findings buttress existing research suggesting that persuasion, or others' attempts to increase participants' healthy behaviors in an uncritical way, may be a driving force in reducing perceived stress levels.

A study protocol for a cluster randomized pragmatic trial for comparing strategies for implementing primary HPV testing for routine cervical cancer screening in a large health care system

BACKGROUND

Limited guidance exists regarding implementation strategies that best facilitate cancer screening practice substitution and achieve optimal stakeholder-centered outcomes. Here we describe the protocol for a randomized pragmatic trial comparing two implementation strategies to facilitate substitution of primary HPV screening for Pap and HPV co-testing to perform routine cervical cancer screening of women aged 30-65 years at Kaiser Permanente Southern California (KPSC).

METHODS

Twelve service areas within KPSC will be randomized to a "centrally-administered system-wide implementation + local-tailored implementation" strategy or a "centrally-administered system-wide implementation only" strategy. The centrally-administered strategy comprises clinician and staff educational activities. Sites in the local-tailored arm will then conduct a structured local needs assessment followed by site-specific selection and deployment of implementation interventions. Surveys and interviews will be conducted among women and providers from the primary care and ob/gyn departments prior to the system-wide transition, shortly after the transition, and after the completion of local-tailored interventions. A stakeholder advisory committee will assist with study design, defining stakeholder-centered outcomes, and developing data collection tools.

RESULTS

The primary outcome of interest is uptake of primary HPV screening. Secondary provider-centered outcomes include provider knowledge, delivery of patient education, satisfaction with the practice substitution process, and resistance to primary HPV screening. Secondary patient-centered outcomes include patient knowledge, stigma, and satisfaction with the screening process. Intervention fidelity will also be measured via surveys.

CONCLUSIONS

Findings from this study will help inform future use of a local-tailored implementation strategy for adopting primary HPV screening at large health care systems. Findings may also be applicable to other types of practice substitution.

Characteristics of Scientific Evidence Informing Changed U.S. Preventive Services Task Force Insufficient Evidence Statements

INTRODUCTION

The U.S. Preventive Services Task Force (USPSTF) issues "Insufficient Evidence" (I) statements when scientific evidence is inadequate for making recommendations about clinical preventive services. Insufficient Evidence statements may be changed to definitive recommendations if new research closes evidence gaps. This study examines the characteristics of evidence that informed changes from I statements to definitive recommendations, including NIH's role as a funder.

METHODS

A total of 11 USPSTF Insufficient Evidence statements that were changed between 2010 and 2019 were assessed. Study designs, bibliometric influence, and funding sources for scientific articles cited in USPSTF evidence reviews were characterized for each I statement. Data were analyzed in 2019-2020.

RESULTS

Most I statements (82%) changed to a B grade; an average of 8.4 years elapsed between issuing the I statement and releasing the definitive recommendation. An average of 63 (range=19-253) articles were included in each USPSTF evidence review. NIH support was cited in 28.8% of articles, on average. The proportion of NIH-funded articles reporting RCT designs was similar to that of non-NIH-funded articles (64.5% vs 59.5%). A higher proportion of NIH-funded articles were rated good quality for study design (39.0%) than the proportion of non-NIH-funded articles (24.4%). Bibliometric influence measured by relative citation ratios was higher for NIH-funded (mean=14.78) than for non-NIH-funded (mean=5.07) articles.

CONCLUSIONS

Study designs and funding supports varied widely across topics, but overall, NIH was the largest single funder of evidence informing 11 changed USPSTF I statements. Enhanced efforts by NIH and other stakeholders to address I statement evidence gaps are needed.

Incorporation of Social Risk in US Preventive Services Task Force Recommendations and Identification of Key Challenges for Primary Care

IMPORTANCE

In its mission to improve health, the US Preventive Services Task Force (USPSTF) recognizes the strong relationship between a person's health and social and economic circumstances as well as persistent inequities in health care delivery.

OBJECTIVE

To assess how social risks have been considered in USPSTF recommendation statements and identify current gaps in evidence needed to expand the systematic inclusion of social risks in future recommendations.

EVIDENCE

The USPSTF commissioned a technical brief that reviewed existing literature on screening and interventions for social risk factors and also audited the 85 USPSTF recommendation statements active as of December 2019 to determine how social risks were addressed in clinical preventive services recommendations.

FINDINGS

Among the 85 USPSTF recommendation statements reviewed, 14 were focused on preventive services that considered health-related social risks. Social risks were commonly referenced in parts of USPSTF recommendations, with 57 of 85 recommendations including some comment on social risks within the recommendation statement, although many comments were not separate prevention services. Social risks were commented on in USPSTF recommendations as part of risk assessment, as a marker of worse health outcomes from the condition of focus, as a consideration for clinicians when implementing the preventive service, and as a research need or gap on the topic.

CONCLUSIONS AND RELEVANCE

This report identified how social risks have been considered in the USPSTF recommendation statements. It serves as a benchmark and foundation for ongoing work to advance the goal of ensuring that health equity and social risks are incorporated in USPSTF methods and recommendations.

De-implementation and substitution of clinical care processes: stakeholder perspectives on the transition to primary human papillomavirus (HPV) testing for cervical cancer screening

Background

New cervical cancer screening guidelines recommend primary human papillomavirus (HPV) testing for women age 30–65 years. Healthcare organizations are preparing to de-implement the previous recommended strategies of Pap testing or co-testing (Pap plus HPV test) and substitute primary HPV testing. However, there may be significant challenges to the replacement of this entrenched clinical practice, even with an evidence-based substitution. We sought to identify stakeholder-perceived barriers and facilitators to this substitution within a large healthcare system, Kaiser Permanente Southern California.

Methods

We conducted semi-structured qualitative interviews with clinician, administrative, and patient stakeholders regarding (a) acceptability and feasibility of the planned substitution; (b) perceptions of barriers and facilitators, with an emphasis on those related to the de-implementation/implementation cycle of substitution; and (c) perceived readiness to change. Our interview guide was informed by the Consolidated Framework for Implementation Research (CFIR). Using a team coding approach, we developed an initial coding structure refined during iterative analysis; the data were subsequently organized thematically into domains, key themes, and sub-themes using thematic analysis, followed by framework analysis informed by CFIR.

Results

We conducted 23 interviews: 5 patient and 18 clinical/administrative. Clinicians perceived that patients feel more tests equals better care, and clinicians and patients expressed fear of missed cancers (“…it’ll be more challenging convincing the patient that only one test is…good enough to detect cancer.”). Patients perceived practice changes resulting in “less care” are driven by the desire to cut costs. In contrast, clinicians/administrators viewed changing from two tests to one as acceptable and a workflow efficiency (“…It’s very easy and half the work.”). Stakeholder-recommended strategies included focusing on the increased efficacy of primary HPV testing and developing clinician talking points incorporating national guidelines to assuage “cost-cutting” fears.

Conclusions

Substitution to replace an entrenched clinical practice is complex. Leveraging available facilitators is key to ease the process for clinical and administrative stakeholders—e.g., emphasizing the efficiency of going from two tests to one. Identifying and addressing clinician and patient fears regarding cost-cutting and perceived poorer quality of care is critical for substitution. Multicomponent and multilevel strategies for engagement and education will be required.

Trial registration

ClinicalTrials.gov, #NCT04371887

Supplementary Information

The online version contains supplementary material available at 10.1186/s43058-021-00211-z.

Understanding the characteristics of US cancer survivors with informal caregivers

BACKGROUND

Although informal caregivers such as family and friends provide people with cancer needed physical care and emotional support, little is known about which individuals have access to such caregivers. The purpose of this article is to provide a nationally representative description of the sociodemographic characteristics of cancer survivors who have or had an informal caregiver in the United States.

METHODS

Cross-sectional data were taken from the Experiences With Cancer Survivorship Supplement of the Medical Expenditure Panel Survey in 2011, 2016, and 2017. People were cancer survivors from diagnosis until the end of life. The study population consisted of adult survivors of cancer other than nonmelanoma skin cancer who were treated for cancer less than 3 years before the survey and were living in the community (n = 720). The main outcome measure was whether or not the cancer survivor reported having an informal caregiver.

RESULTS

In the United States, 55.2% of cancer survivors reported having an informal caregiver during or after their cancer treatment. The relationship of the caregiver to the survivor varied by sex: males were more likely to have a spouse as their caregiver, and females were more likely to have a child as their caregiver. In multivariate analyses, cancer survivors who were female, were married, were of a race/ethnicity other than White, or were in poor health were more likely to have an informal caregiver.

CONCLUSIONS

Future research can examine whether those without informal caregivers might need more formal support as they undergo cancer treatment and transition into cancer survivorship.

Developing Primary Care-Based Recommendations for Social Determinants of Health: Methods of the U.S. Preventive Services Task Force

The purpose of the U.S. Preventive Services Task Force (USPSTF) is to provide evidence-based recommendations on primary care screening, behavioral counseling, and preventive medications. A person's health is strongly influenced by social determinants of health, such as economic and social conditions; therefore, preventive recommendations that address these determinants would be ideal. However, differing social determinants have been proposed by a wide range of agencies and organizations, little prevention evidence is available, and responsible parties are in competition, all of which make the creation of evidence-based prevention recommendations for social determinants of health challenging. This article highlights social determinants already included in USPSTF recommendations and proposes a process by which others may be considered for primary care preventive recommendations. In many ways, incorporating social determinants of health into evidence-based recommendations is an evolving area. By reviewing the evidence on the effects of screening and interventions on social determinants relevant to primary care, the USPSTF will continue to provide recommendations on clinical preventive services to improve the health of all Americans.

Social Determinants as a Preventive Service: U.S. Preventive Services Task Force Methods Considerations for Research

The body of research on social determinants of health is rapidly accumulating. The U.S. Preventive Services Task Force is conducting evaluations to consider the inclusion of screening and counseling for social risks as a clinical preventive service. Yet, for many social risks, evidence is still likely needed before the U.S. Preventive Services Task Force can recommend universal screening or counseling. This manuscript offers a brief review of the social determinants of health that may be germane to the U.S. Preventive Services Task Force, the methods the U.S. Preventive Services Task Force uses to evaluate relevant evidence, and current evidence gaps for social risks. Key methods for making clinical preventive service recommendations are applied for considering the integration of social and clinical care. These methods include determining the certainty of the evidence, assessing the net benefit, defining appropriate prevention frameworks, defining health outcomes versus intermediate outcomes, fully assessing the harms, and defining to what populations and care contexts the evidence applies. This road map for research is intended to spark ingenuity and purpose in the next generation of research studies, thereby ensuring that future recommendations to address and prevent social risks in primary care are informed by high-quality evidence. SUPPLEMENT INFORMATION: This article is part of a supplement entitled Identifying and Intervening on Social Needs in Clinical Settings: Evidence and Evidence Gaps, which is sponsored by the Agency for Healthcare Research and Quality of the U.S. Department of Health and Human Services, Kaiser Permanente, and the Robert Wood Johnson Foundation.

The Practice Gap: National Estimates of Screening and Counseling for Alcohol, Tobacco, and Obesity

Tobacco use, lack of physical activity and poor diet, and alcohol consumption are leading causes of death in the United States. We estimated screening and counseling rates by using a nationally representative sample of adults aged 35 years and older with a preventive care supplement to the 2014 Medical Expenditure Panel Survey. Receipt of the recommended level of services ranged from nearly two-thirds (64.2% for obesity, 61.9% for tobacco use) to less than one-half (41.0% for alcohol misuse). There is significant room for improving care delivery, but primary care practices probably also need additional resources to raise screening and counseling rates.

Few Americans Receive All High-Priority, Appropriate Clinical Preventive Services

As of 2015, only 8 percent of US adults ages thirty-five and older had received all of the high-priority, appropriate clinical preventive services recommended for them. Nearly 5 percent of adults did not receive any such services. Further delivery system-level efforts are needed to increase the use of preventive services.

Estimated Impact of US Preventive Services Task Force Recommendations on Use and Cost of Statins for Cardiovascular Disease Prevention

BACKGROUND

US Preventive Services Task Force (USPSTF) released new recommendations on statin use for atherosclerotic cardiovascular disease (ASCVD) prevention. The Affordable Care Act (ACA) mandates USPSTF recommendations with an "A" or "B" grade receive insurance coverage without copayment. We assessed the potential impact of these recommendations.

OBJECTIVE

To assess the US population meeting criteria for statin use and factors associated with use, and calculate associated costs.

DESIGN AND MEASURES

We estimated 10-year ASCVD event risk scores from National Health and Nutrition Examination Survey data using Pooled Cohort Equations from the American College of Cardiology/American Heart Association and applied them to Medical Expenditure Panel Survey data. We estimated the population meeting USPSTF criteria and calculated the number of statin prescription fills and out-of-pocket and total costs. We assessed associations between statin use and sociodemographic and health characteristics and national trends in use from 1996 to 2014.

PARTICIPANTS

A nationally representative sample of people aged ≥ 40 years, representing 150 million people living in the USA.

KEY RESULTS

Of 26.8 million adults recommended for statins, only 41.8% were taking them. Female sex, Hispanic ethnicity, uninsured status, or living in the South was associated with lower odds of using statins. Under ACA, people with private insurance would avoid out-of-pocket cost of $9 for each generic prescription, resulting in savings of approximately $44 in annual costs. ACA's mandate for insurance coverage would result in a $193 million shift in out-of-pocket cost for statins from patients to private insurers.

CONCLUSIONS

New USPSTF recommendations may result in decreased out-of-pocket costs and expanded access to statins. Previous research has shown that eliminating copayments increased adherence and decreased rates of ASCVD events without increasing overall healthcare costs. Future research will determine whether the USPSTF's recommendations will result in similar findings.

Rationale and study protocol for Unidas por la Vida (United for Life): A dyadic weight-loss intervention for high-risk Latina mothers and their adult daughters

BACKGROUND

Half of Mexican-American women are under-active and nearly 78% are overweight/obese. The high lifetime risk of developing type 2 diabetes necessitates a culturally appropriate lifestyle intervention.

PURPOSE

Unidas por la Vida is a novel dyadic intervention that capitalizes on the centrality of family in Latino culture to mobilize an existing family dyad as a resource for health behavior change. The intervention aims to improve health behaviors and promote weight loss in two at-risk members of the same family: mothers with type 2 diabetes and their overweight/obese adult daughters who are at risk for developing diabetes.

METHODS

Participants (N = 460 mother-adult daughter dyads) will be randomized into one of three conditions: 1) dyadic participation (mothers-daughters) in a lifestyle intervention; 2) individual participation (mothers alone; unrelated daughters alone) in a lifestyle intervention; and 3) mother-daughter dyads in a minimal intervention control group.

RESULTS

The primary outcome is weight loss. Secondary outcomes include physical activity, dietary intake, physiological measures (e.g. HbA1c), and body composition. Both the dyadic and individual interventions are expected to produce greater weight loss at 6, 12, and 18 months than those in minimal intervention control group, with women assigned to the dyadic intervention expected to lose more weight and to maintain the weight loss longer than women assigned to the individual intervention.

CONCLUSION

Because health risks are often shared by multiple members of at-risk families, culturally appropriate, dyadic interventions have the potential to increase the success of behavior change efforts and to extend their reach to multiple family members.

TRIAL REGISTRATION

ClinicalTrials.gov identifier NCT02741037.

Sources of Funding for Research in Evidence Reviews That Inform Recommendations of the US Preventive Services Task Force

This study characterizes the sources of funding for the research included in systematic reviews that form the basis for US Preventive Services Task Force recommendation statements.

Conflicts of Interest in Clinical Guidelines: Update of U.S. Preventive Services Task Force Policies and Procedures

The U.S. Preventive Services Task Force (USPSTF) provides independent, objective, and scientifically rigorous recommendations for clinical preventive services. A primary concern is to avoid even the appearance of members having special interests that might influence their ability to judge evidence and formulate unbiased recommendations. The conflicts of interest policy for the USPSTF is described, as is the formal process by which best practices were incorporated to update the policy. The USPSTF performed a literature review, conducted key informant interviews, and reviewed conflicts of interest policies of ten similar organizations. Important findings included transparency and public accessibility; full disclosure of financial relationships; disclosure of non-financial relationships (that create the potential for bias and compromise a member's objective judgment); disclosure of family members' conflicts of interests; and establishment of appropriate reporting periods. Controversies in best practices include the threshold of financial disclosures, ease of access to conflicts of interest policies and declarations, vague definition of non-financial biases, and request for family members' conflicts of interests (particularly those that are non-financial in nature). The USPSTF conflicts of interest policy includes disclosures for immediate family members, a clear non-financial conflicts of interest definition, long look-back period and application of the policy to prospective members. Conflicts of interest is solicited from all members every 4 months, formally reviewed, adjudicated, and made publicly available. The USPSTF conflicts of interest policy is publicly available as part of the USPSTF Procedure Manual. A continuous improvement process can be applied to conflicts of interest policies to enhance public trust in members of panels, such as the USPSTF, that produce clinical guidelines and recommendations.

U.S. Preventive Services Task Force Priorities for Prevention Research

The U.S. Preventive Services Task Force (USPSTF) makes recommendations about clinical preventive services. The USPSTF examines chains of direct and indirect evidence to demonstrate the effectiveness of a clinical preventive service. Missing links across the chains of evidence reflect gaps in the research. Evidence gaps can occur for preventive services that receive a letter grade recommendation and those that receive an I statement (insufficient evidence). This article describes the types of evidence gaps that the USPSTF encounters across its various recommendations and how the USPSTF identifies and communicates these gaps to researchers and policymakers, who can help generate the needed evidence. Common types of evidence gaps include limited evidence in primary care settings and populations, a lack of appropriate health outcomes, limited evidence linking behavior change to health outcomes, and a lack of evidence for effective preventive services in diverse populations. The USPSTF annual report to Congress focuses on the evidence gaps of new recommendations from the past year and is sent to leading research funding agencies. The Office of Disease Prevention at NIH uses this report to help direct future funding opportunities that may address these evidence gaps. The USPSTF plays a critical role in highlighting the information needed to advance the science to optimize the use of clinical preventive services in primary care.

Developing Recommendations for Evidence-Based Clinical Preventive Services for Diverse Populations: Methods of the U.S. Preventive Services Task Force

The U.S. Preventive Services Task Force (USPSTF) summarizes the principles and considerations that guide development of its recommendations for diverse U.S. populations. It uses these principles through each step in the evidence-based guideline process: developing the research plan, conducting the evidence review, developing the recommendation, and communicating to guideline users. Three recent recommendations provide examples of how the USPSTF has used these principles: the 2015 recommendation on screening for abnormal blood glucose and type 2 diabetes; the 2016 recommendation on screening for breast cancer; and the recommendation on screening for prostate cancer, which is currently in progress. A more comprehensive list of recommendations that includes considerations for specific populations is also provided.

Contributors to Patients' Ratings of Quality of Care Among Ethnically Diverse Patients with Type 2 Diabetes

We examined racial/ethnic differences in patients' ratings of components of interpersonal quality [participatory decision making (PDM) style, being treated as an equal partner, and feelings of trust], and evaluated the association between each of these components and patients' ratings of overall healthcare quality among non-Hispanic white (NHW), Vietnamese American, and Mexican American patients with type 2 diabetes. The findings indicated that although all three components were significantly associated with ratings of overall healthcare quality, the significant interactions between race/ethnicity and both PDM style (β = -0.09, p < 0.01) and equal partner (β = -0.06, p < 0.05) for the Vietnamese American patients suggested that the relationship between these components and patients' ratings of healthcare quality were less strong among Vietnamese American patients than among the NHW patients. Understanding racial/ethnic differences in the components of interpersonal quality that are associated with patients' ratings of overall healthcare quality is an important step for improving patients' experiences of their own care.

Enabling Quality: Electronic Health Record Adoption and Meaningful Use Readiness in Federally Funded Health Centers

The Health Resources and Services Administration has supported the adoption of electronic health records (EHRs) by federally funded health centers for over a decade; however, little is known about health centers' current EHR adoption rates, progress toward Meaningful Use, and factors related to adoption. We analyzed cross-sectional data from all 1,128 health centers in 2011, which served over 20 million patients during that year. As of 2011, 80% of health centers reported using an EHR, and high proportions reported using many advanced EHR functionalities. There were no indications of disparities in EHR adoption by census region, urban/rural location, patient sociodemographic composition, physician staffing, or health center funding; however, there were small variations in adoption by total patient cost and percent of revenue from grants. Findings revealed no evidence of a digital divide among health centers, indicating that health centers are implementing EHRs, in keeping with their mission to reduce health disparities.

Preventive Counseling Services during Primary Care Visits: A Comparison of Health Centers versus Other Physician Offices

We compared preventive counseling services provided by health centers versus other physician offices. Cross-sectional data came from the 2008 National Ambulatory Medical Care Survey, including 25,177 patient visits in physician offices and 3,345 patient visits in health centers. Despite serving disproportionately more vulnerable patients, health centers provided comparable rates of preventive counseling services, compared with other physician offices: health education (39% vs. 36%), disease management (34% vs. 41%), asthma education (21% vs. 13%), tobacco education (19% for both), and weight reduction education (6% vs. 9%) (p>.05 for all). Adjusted analyses showed no association between health care setting and preventive counseling.

Sexually Transmitted Infections: Recommendations from the U.S. Preventive Services Task Force

The U.S. Preventive Services Task Force (USPSTF) has issued recommendations on behavioral counseling to prevent sexually transmitted infections (STIs) and recommendations about screening for individual STIs. Clinicians should obtain a sexual history to assess for behaviors that increase a patient's risk. Community and population risk factors should also be considered. The USPSTF recommends intensive behavioral counseling for all sexually active adolescents and for adults whose history indicates an increased risk of STIs. These interventions can reduce STI acquisition and risky sexual behaviors, and increase condom use and other protective behaviors. The USPSTF recommends screening for chlamydia and gonorrhea in all sexually active women 24 years and younger, and in older women at increased risk. It recommends screening for human immunodeficiency virus (HIV) infection in all patients 15 to 65 years of age regardless of risk, as well as in younger and older patients at increased risk of HIV infection. The USPSTF also recommends screening for hepatitis B virus infection and syphilis in persons at increased risk. All pregnant women should be tested for hepatitis B virus infection, HIV infection, and syphilis. Pregnant women 24 years and younger, and older women with risk factors should be tested for gonorrhea and chlamydia. The USPSTF recommends against screening for asymptomatic herpes simplex virus infection. There is inadequate evidence to determine the optimal interval for repeat screening; clinicians should rescreen patients when their sexual history reveals new or persistent risk factors.

Complementary and alternative medicine (CAM) use among non-Hispanic white, Mexican American, and Vietnamese American patients with type 2 diabetes

PURPOSE

This study examines the use of complementary and alternative medicine (CAM) by ethnicity/race among patients with type 2 diabetes.

SUBJECTS AND METHODS

Four hundred and ten (410) patients with type 2 diabetes recruited from an academic-medical center completed a survey assessing CAM use, diabetes status, and sociodemographic characteristics.

RESULTS

Several significant ethnic/racial differences were observed in CAM use (both in the types of providers seen as well as in the herbs and dietary supplements used). Although White patients reported using CAM in addition to their diabetes medication (mean [SD] 4.9 [0.4] on a scale from 1=never to 5=always) more frequently than Mexican American patients (3.1 [1.6], p<.05), Mexican American patients (1.4 [1.1]) used CAM instead of their diabetes medications more frequently than non-Hispanic White patients (1.0 [0.1], p<.05). More Mexican American (66.7%) and Vietnamese American patients (73.7%) than non-Hispanic Whites (11.8%, p=.002) described CAM practitioners as being closer to their cultural traditions than Western practitioners, whereas Vietnamese [End Page 1941] patients were more likely to describe use of herbs and supplements as closer to their cultural traditions (84.5% versus 15.3% for White and 30.9% for Mexican American patients, p <.001).

CONCLUSIONS

Considering the variability and perceptions in CAM use, providers should discuss with their patients how their CAM use may influence diabetes management behaviors.

Health Care Use and Spending for Medicaid Enrollees in Federally Qualified Health Centers Versus Other Primary Care Settings

OBJECTIVES

To compare health care use and spending of Medicaid enrollees seen at federally qualified health centers versus non-health center settings in a context of significant growth.

METHODS

Using fee-for-service Medicaid claims from 13 states in 2009, we compared patients receiving the majority of their primary care in federally qualified health centers with propensity score-matched comparison groups receiving primary care in other settings.

RESULTS

We found that health center patients had lower use and spending than did non-health center patients across all services, with 22% fewer visits and 33% lower spending on specialty care and 25% fewer admissions and 27% lower spending on inpatient care. Total spending was 24% lower for health center patients.

CONCLUSIONS

Our analysis of 2009 Medicaid claims, which includes the largest sample of states and more recent data than do previous multistate claims studies, demonstrates that the health center program has provided a cost-efficient setting for primary care for Medicaid enrollees.

Rationale and study protocol for a multi-component Health Information Technology (HIT) screening tool for depression and post-traumatic stress disorder in the primary care setting

The prevalence rate of depression in primary care is high. Primary care providers serve as the initial point of contact for the majority of patients with depression, yet, approximately 50% of cases remain unrecognized. The under-diagnosis of depression may be further exacerbated in limited English-language proficient (LEP) populations. Language barriers may result in less discussion of patients' mental health needs and fewer referrals to mental health services, particularly given competing priorities of other medical conditions and providers' time pressures. Recent advances in Health Information Technology (HIT) may facilitate novel ways to screen for depression and other mental health disorders in LEP populations. The purpose of this paper is to describe the rationale and protocol of a clustered randomized controlled trial that will test the effectiveness of an HIT intervention that provides a multi-component approach to delivering culturally competent, mental health care in the primary care setting. The HIT intervention has four components: 1) web-based provider training, 2) multimedia electronic screening of depression and PTSD in the patients' primary language, 3) Computer generated risk assessment scores delivered directly to the provider, and 4) clinical decision support. The outcomes of the study include assessing the potential of the HIT intervention to improve screening rates, clinical detection, provider initiation of treatment, and patient outcomes for depression and post-traumatic stress disorder (PTSD) among LEP Cambodian refugees who experienced war atrocities and trauma during the Khmer Rouge. This technology has the potential to be adapted to any LEP population in order to facilitate mental health screening and treatment in the primary care setting.

Enhancing Coordination Among the U.S. Preventive Services Task Force, Agency for Healthcare Research and Quality, and National Institutes of Health

This paper focuses on the relationships among the U.S. Preventive Services Task Force (USPSTF); Agency for Healthcare Research and Quality (AHRQ); and NIH. After a brief description of the Task Force, AHRQ, NIH, and an example of how they interact, we describe the steps that have been taken recently by NIH to enhance their coordination. We also discuss several challenges that remain and consider potential remedies that NIH, AHRQ, and investigators can take to provide the USPSTF with the data it needs to make recommendations, particularly those pertaining to behavioral interventions.

Comparing the Cost of Caring for Medicare Beneficiaries in Federally Funded Health Centers to Other Care Settings

OBJECTIVE

To compare total annual costs for Medicare beneficiaries receiving primary care in federally funded health centers (HCs) to Medicare beneficiaries in physician offices and outpatient clinics.

DATA SOURCES/STUDY SETTINGS

Part A and B fee-for-service Medicare claims from 14 geographically diverse states. The sample was restricted to beneficiaries residing within primary care service areas (PCSAs) with at least one HC.

STUDY DESIGN

We modeled separately total annual costs, annual primary care costs, and annual nonprimary care costs as a function of patient characteristics and PCSA fixed effects.

DATA COLLECTION

Data were obtained from the Centers for Medicare & Medicaid Services.

PRINCIPAL FINDINGS

Total median annual costs (at $2,370) for HC Medicare patients were lower by 10 percent compared to patients in physician offices ($2,667) and by 30 percent compared to patients in outpatient clinics ($3,580). This was due to lower nonprimary care costs in HCs, despite higher primary care costs.

CONCLUSIONS

HCs may offer lower total cost practice style to the Centers for Medicare & Medicaid Services, which administers Medicare. Future research should examine whether these lower costs reflect better management by HC practitioners or more limited access to specialty care by HC patients.

Mental health symptoms and patient-reported diabetes symptom burden: implications for medication regimen changes

AIMS

To examine the relative contribution of glycaemic control (HbA1C) and depressive symptoms on diabetes-related symptom burden (hypoglycaemia and hyperglycaemia) in order to guide medication modification.

METHODS

Secondary analysis of medical records data and questionnaires collected from a racially/ethnically diverse sample of adult patients with type 2 diabetes (n = 710) from seven outpatient clinics affiliated with an academic medical centre over a 1-year period as part of the Reducing Racial Disparities in Diabetes: Coached Care (R2D2C2) study.

RESULTS

Results from linear regression analysis revealed that patients with high levels of depressive symptoms had more diabetes-related symptom burden (both hypoglycaemia and hyperglycaemia) than patients with low levels of depressive symptoms (βs = 0.09-0.17, Ps < 0.02). Furthermore, results from two logistic regression analyses suggested that the odds of regimen intensification at 1-year follow-up was marginally associated with patient-reported symptoms of hypoglycaemia [adjusted odds ratio (aOR) = 1.24, 95% CI: 0.98-1.58; P = 0.08] and hyperglycaemia (aOR = 1.21, 95% CI: 1.00-1.46; P = 0.05), after controlling for patients' HbA1C, comorbidity, insulin use and demographics. These associations, however, were diminished for patients with high self-reported hypoglycaemia and high levels of depressive symptoms, but not low depressive symptoms (interaction terms for hypoglycaemia by depressive symptoms, aOR = 0.98, 95% CI: 0.97-0.99; P = 0.03).

CONCLUSIONS

Mental health symptoms are associated with higher levels of patient-reported of diabetes-related symptoms, but the association between diabetes-related symptoms and subsequent regimen modifications is diminished in patients with greater depressive symptoms. Clinicians should focus attention on identifying and treating patients' mental health concerns in order to address the role of diabetes-related symptom burden in guiding physician medication prescribing behaviour.

Access to mental health services among patients at health centers and factors associated with unmet needs

Cross-sectional 2009 Health Center Patient Survey data describe the mental health status of health center patients, utilization of mental health services, and factors associated with unmet need for mental health treatment. One in five health center patients accessed mental health services in the past year, and over half of the patients who received counseling received this treatment at a health center. Patients who were unable to access mental health care cited affordability as a concern. Unmet need for mental health treatment was reported by one in three patients. Multivariate analysis found that the odds of reporting unmet need were higher for patients who lacked a usual source of care and patients with serious mental illness.

Cigarette Smoking, Desire to Quit, and Tobacco-Related Counseling Among Patients at Adult Health Centers

Objectives. We determined cigarette smoking prevalence, desire to quit, and tobacco-related counseling among a national sample of patients at health centers. Methods. Data came from the 2009 Health Center Patient Survey and the 2009 National Health Interview Survey. The analytic sample included 3949 adult patients at health centers and 27 731 US adults. Results. Thirty-one percent of health center patients were current smokers, compared with 21% of US adults in general. Among currently smoking health center patients, 83% desired to quit and 68% received tobacco counseling. In multivariable models, patients had higher adjusted odds of wanting to quit if they had indications of severe mental illness (adjusted odds ratio [AOR] = 3.26; 95% confidence interval [CI] = 1.19, 8.97) and lower odds if they had health insurance (AOR = 0.43; 95% CI = 0.22, 0.86). Patients had higher odds of receiving counseling if they had 2 or more chronic conditions (AOR = 2.05; 95% CI = 1.11, 3.78) and lower odds if they were Hispanic (AOR = 0.57; 95% CI = 0.34, 0.96). Conclusions. Cigarette smoking prevalence is substantially higher among patients at health centers than US adults in general. However, most smokers at health centers desire to quit. Continued efforts are warranted to reduce tobacco use in this vulnerable group.

Costs and clinical quality among Medicare beneficiaries: associations with health center penetration of low-income residents

OBJECTIVE

Determine the association between access to primary care by the underserved and Medicare spending and clinical quality across hospital referral regions (HRRs).

DATA SOURCES

Data on elderly fee-for-service beneficiaries across 306 HRRs came from CMS' Geographic Variation in Medicare Spending and Utilization database (2010). We merged data on number of health center patients (HRSA's Uniform Data System) and number of low-income residents (American Community Survey).

STUDY DESIGN

We estimated access to primary care in each HRR by "health center penetration" (health center patients as a proportion of low-income residents). We calculated total Medicare spending (adjusted for population size, local input prices, and health risk). We assessed clinical quality by preventable hospital admissions, hospital readmissions, and emergency department visits. We sorted HRRs by health center penetration rate and compared spending and quality measures between the high- and low-penetration deciles. We also employed linear regressions to estimate spending and quality measures as a function of health center penetration.

PRINCIPAL FINDINGS

The high-penetration decile had 9.7% lower Medicare spending ($926 per capita, p=0.01) than the low-penetration decile, and no different clinical quality outcomes.

CONCLUSIONS

Compared with elderly fee-for-service beneficiaries residing in areas with low-penetration of health center patients among low-income residents, those residing in high-penetration areas may accrue Medicare cost savings. Limited evidence suggests that these savings do not compromise clinical quality.

Dyadic collaboration in shared health behavior change: the effects of a randomized trial to test a lifestyle intervention for high-risk Latinas

OBJECTIVE

This study sought to evaluate the feasibility of a pilot, dyad-based lifestyle intervention, the Unidas por la Vida program, for improving weight loss and dietary intake among high-risk Mexican American mothers who have Type 2 diabetes and their overweight/obese adult daughters.

METHOD

Mother-daughter dyads (N = 89) were recruited from two federally qualified health centers and randomly assigned to either the Unidas intervention or to the control condition. The 16-week Unidas intervention consisted of the following: (a) four group meetings, (b) eight home visits, and (c) booster telephone calls by a lifestyle community coach. The control condition consisted of educational materials mailed to participants' homes. Participants completed surveys at T1 (baseline) and T2 (16 weeks) that assessed various demographic, social network involvement, and dietary variables.

RESULTS

Unidas participants lost significantly more weight at T2 (p < .003) compared with the control participants. Furthermore, intervention participants also were more likely to be eating foods with lower glycemic load (p < .001) and less saturated fat (p = .004) at T2. Unidas participants also reported a significant increase in health-related social support and social control (persuasion control only) and a decrease in undermining.

CONCLUSIONS

The Unidas program promoted weight loss and improved dietary intake, as well as changes in diet-related involvement of participants' social networks. The results from this study demonstrate that interventions that draw upon multiple people who share a health-risk have the potential to foster significant changes in lifestyle behaviors and in social network members' health-related involvement. Future research that builds on these findings is needed to elucidate the specific dyadic and social network processes that may drive health behavior change.

Overweight/obesity and weight-related treatment among patients in U.S. federally supported health centers

BACKGROUND

We obtained the prevalence of overweight/obesity, weight-loss attempts, and weight-related counseling and treatment among U.S. adults who sought care in federally funded community health centers. We investigated whether racial/ethnic and gender disparities existed for these measures.

METHODS

Data came from the 2009 Health Center Patient Survey. Measures included body mass index (BMI), self-perceived weight, weight-loss attempts, being told of a weight problem, receipt of weight-related counseling, nutritionist referrals, weight-loss prescriptions, and cholesterol checks. We conducted bivariate analyses to determine distributions by race/ethnicity and gender, then ran logistic regressions to examine the effects of several sociodemographic factors on weight-loss attempts and on being told of a weight problem.

RESULTS

Overall, 76% of adult patients seen in health centers were overweight or obese (BMI ≥ 25.0 kg/m(2)); 55% of overweight patients, and 87% of obese patients correctly perceived themselves as overweight. There were no racial/ethnic differences in BMI categories or self-perceptions of weight. Females were more likely than males to be obese and also more likely to perceive themselves as overweight. About 60% of overweight/obese patients reported trying to lose weight in the past year. There were no racial/ethnic disparities favoring non-Hispanic White patients in weight-related treatment. Women were more likely than men to receive referrals to a nutritionist or weight-loss prescriptions. Overweight/obese patients had higher adjusted odds of a past-year weight-loss attempt if they perceived themselves as overweight (OR = 3.30, p < 0.0001), were female (OR = 1.95, p < 0.05), African American (OR = 3.34, p < 0.05), or Hispanic/Latino (OR = 2.14, p < 0.05). Overweight/obese patients had higher odds of being told they had a weight problem if they were Hispanic/Latino (OR = 2.56, p < 0.05) or if they had two or more chronic conditions (OR = 2.77, p < 0.01).

CONCLUSIONS

Patients seen in community health centers have high rates of overweight and obesity, even higher than the general U.S. population. Efforts to address weight problems during primary care visits are needed to reduce the burden of obesity and its sequellae among health center patients.

Health care utilization and receipt of preventive care for patients seen at federally funded health centers compared to other sites of primary care

OBJECTIVE

To compare utilization and preventive care receipt among patients of federal Section 330 health centers (HCs) versus patients of other settings.

DATA SOURCES

A nationally representative sample of adults from the Medical Expenditure Panel Survey (2004-2008).

STUDY DESIGN

HC patients were defined as those with ≥50 percent of outpatient visits at HCs in the first panel year. Outcomes included utilization and preventive care receipt from the second panel year. We used negative binomial and logistic regression models with propensity score adjustment for confounding differences between HC and non-HC patients.

PRINCIPAL FINDINGS

Compared to non-HC patients, HC patients had fewer office visits (adjusted incidence rate ratio [aIRR], 0.63) and hospitalizations (aIRR, 0.43) (both p < .001). HC patients were more likely to receive breast cancer screening than non-HC patients (adjusted odds ratio [aOR] 2.78, p < .01). In subgroup analyses, uninsured HC patients had fewer outpatient and emergency room visits and were more likely to receive dietary advice and breast cancer screening compared to non-HC patients.

CONCLUSIONS

Health centers add value to the health care system by providing socially and medically disadvantaged patients with care that results in lower utilization and maintained or improved preventive care.

The policy implications of the cost structure of home health agencies

PURPOSE

To examine the cost structure of home health agencies by estimating an empirical cost function for those that are Medicare-certified, ten years following the implementation of prospective payment.

DESIGN AND METHODS

2010 national Medicare cost report data for certified home health agencies were merged with case-mix information from the Outcome and Assessment Information Set (OASIS). We estimated a fully interacted (by tax status) hybrid cost function for 7,064 agencies and calculated marginal costs as percent of total costs for all variables.

RESULTS

The home health industry is dominated by for-profit agencies, which tend to be newer than the non-profit agencies and to have higher average costs per patient but lower costs per visit. For-profit agencies tend to have smaller scale operations and different cost structures, and are less likely to be affiliated with chains. Our estimates suggest diseconomies of scale, zero marginal cost for contracting with therapy workers, and a positive marginal cost for contracting with nurses, when controlling for quality.

IMPLICATIONS

Our findings suggest that efficiencies may be achieved by promoting non-profit, smaller agencies, with fewer contract nursing staff. This conclusion should be tested further in future studies that address some of the limitations of our study.

Unidas por la Vida (United for Life): implementing a culturally-tailored, community-based, family-oriented lifestyle intervention

Unidas por la Vida, a behavioral weight-loss program, was developed for use among low-income, Mexican-American women with diabetes and their overweight/obese adult daughters. The program leverages community resources in a partnership between primary care and community-based organizations. This paper describes the program's implementation, lessons learned, and implications for sustainability.

Reducing disparities in access to primary care and patient satisfaction with care: the role of health centers

This paper examined disparities in access to and satisfaction with primary care among patients of different racial/ethnic groups and insurance coverage, in health centers and the nation overall. Data came from the 2009 Health Center Patient Survey and 2009 Medical Expenditure Panel Survey. Study outcomes included usual source of care, type of usual source of care, satisfaction with provider office hours, and satisfaction with overall care. Health center patients were more racially and ethnically diverse than national patients, and health center patients were more likely than national patients to be uninsured or publicly insured. No significant health care disparities in access to care existed among patients from different racial/ethnic and insurance groups among health centers, unlike low-income patients nationwide or the U.S. population in general. Additional focus on the uninsured, in health centers and other health care settings nationwide, is needed to enhance satisfaction with care among these patients.

Effects of patient-centered medical home attributes on patients' perceptions of quality in federally supported health centers

PURPOSE

We sought to assess patients' ratings of patient-centered medical home (PCMH) attributes and overall quality of care within federally supported health centers.

METHODS

Data were collected through the 2009 Health Center Patient Survey (n = 4,562), which consisted of in-person interviews and included a nationally representative sample of patients seen in health centers. Quality measures included patients' perceptions of overall quality of services, perceptions of quality of clinician advice/treatment, and likelihood of referring friends and relatives to the health center. PCMH attributes included (1) access to care getting to health center, (2) access to care during visit, (3) patient-centered communication with health care clinicians, (4) patient-centered communication with support staff, (5) self-management support for chronic conditions, (6) self-management support for behavioral risks, and (7) comprehensive preventive care. Bivariate analysis and logistic regressions were used to examine associations between patients' perceptions of PCMH attributes and patient-reported quality of care.

RESULTS

Eighty-four percent of patients reported excellent/very good overall quality of services, 81% reported excellent/very good quality of clinician care, and 84% were very likely to refer friends and relatives. Higher patient ratings on the access to care and patient-centered communication attributes were associated with higher odds of patient-reported high quality of care on the 3 outcome measures.

CONCLUSIONS

More than 80% of patients perceived high quality of care in health centers. PCMH attributes related to access to care and communication were associated with greater likelihood of patients reporting high-quality care.