Longitudinal trends in parent-reported child sleep, physical activity, and screen use during the COVID-19 pandemic in New York City.

Objective: To examine trends in child sleep, physical activity, and screen use during the COVID-19 pandemic in New York City with a prospective, longitudinal online survey of parents recruited from a large medical center. Methods: Data was collected Spring 2020 ("Complete Shutdown") and Fall 2020 ("Partial Shutdown"). Outcomes were parental perceptions about changes in child sleep, physical activity, and screen time compared to before COVID-19; and contemporaneous measures of these child behaviors. We report contemporaneous responses and paired analyses to describe longitudinal changes. Results: Two hundred seventy-seven participants were surveyed during Complete Shutdown and 227 (81.9%) filled out a follow-up survey during Partial Shutdown. The largest percentage of parents at both time points perceived no change in child sleep, decreases in child exercise, and increases in child screen time. In paired analyses, perceptions shifted toward less sleep, more physical activity and less screen time from Complete Shutdown to Partial Shutdown. Conclusion: COVID-19 had negative impacts on child health behaviors that did not resolve over a 6-month period despite partial reopenings.

The Use of Technology in the Clinical Care of Anxiety: An Evidence Map.

OBJECTIVE: Cost, distance, and stigma may present barriers to face-to-face treatment for anxiety disorders. Technology can help overcome these barriers. The evidence map presented here provides an overview of technology use in clinical care for anxiety. METHODS: Searches in three databases from their inception dates to June 2019 identified published randomized controlled trials (RCTs) examining technology use in anxiety disorder management. Reviewers screened 4,061 records, included 128 RCTs, and extracted data on study characteristics and technology type, function, and effectiveness. RESULTS: In 88% of the 128 RCTs, the authors reported reduced anxiety symptoms postintervention. Studies of computer technology (66%) and patient self-directed psychotherapy (31%) were most common. Many interventions were studied by only a few RCTs, and many studies had small sample sizes. CONCLUSIONS: Almost all interventions reported improved anxiety symptoms, with computer applications having the largest evidence base. More information is needed to evaluate the role of technology in clinical care for anxiety.

Effects of Health Care Payment Models on Physician Practice in the United States: Follow-Up Study.

This study, sponsored by the American Medical Association (AMA), describes how alternative payment models (APMs) affect physicians, physicians' practices, and hospital systems in the United States and also provides updated data to the original 2014 study. Payment models discussed are core payment (fee for service, capitation, episode-based and bundled), supplementary payment (shared savings, pay for performance, retainer-based), and combined payment (medical homes and accountable care organizations). The effects of changes since 2014 in the Affordable Care Act (ACA) and of new alternative payment models (APMs), such as the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA) Quality Payment Program (QPP), are also examined. This project uses the same qualitative multiple-case study method as the 2014 study, relying primarily on semistructured interviews with physician practice leaders, physicians, and other observers. Findings describe the challenges posed by APMs, strategies adopted to deal with APMs, the effects of rapidly changing and increasingly complex payment models, and how risk aversion influences physician practices' decisions to engage in new payment models. Project findings are intended to help guide efforts by the AMA and other stakeholders to improve current and future APMs and help physician practices succeed in them.

Practice Expenses Associated with Comprehensive Primary Care Capabilities.

Through the Comprehensive Primary Care (CPC) and Comprehensive Primary Care Plus (CPC+) programs, the Centers for Medicare & Medicaid Services (CMS) has encouraged primary care practices to invest in "comprehensive primary care" capabilities. Empirical evidence suggests these capabilities are under-reimbursed or not reimbursed under prevailing fee-for-service payment models. To help CMS design alternative payment models (APMs) that reimburse the costs of these capabilities, the authors developed a method for estimating related practice expenses. Fifty practices, sampled for diversity across CPC+ participation status, geographic region, rural status, size, and parent-organization affiliation, completed the study. Researchers developed a mixed-methods strategy, beginning with interviews of practice leaders to identify their capabilities and the types of costs incurred. This was followed by researcher-assisted completion of a workbook tailored to each practice, which gathered related labor and nonlabor costs. In a final interview, practice leaders reviewed cost estimates and made any needed corrections before approval. A main goal was to address a persistent question faced by CMS: When practices reported widely divergent costs for a given capability, was that divergence due to practices having different prices for the same capability or from their having substantially different capabilities? The cost estimation method developed in this project collected detailed data on practice capabilities and their costs. However, the small sample did not allow quantitative estimation of the contributions of service level and pricing to the variation in overall costs. This cost estimation method, deployed on a larger scale, could generate robust data to inform new payment models aimed at incentivizing and sustaining comprehensive primary care.

Technology Isn't the Half of It: Integrating Electronic Health Records and Infusion Pumps in a Large Hospital.

BACKGROUND: Although adoption of "smart" infusion pumps has improved intravenous medication administration safety, pump integration with electronic health records (EHRs) remains rare. Early-adopter hospitals have recently implemented intravenous clinical integration (IVCI) to allow bidirectional communication between their EHRs and infusion pumps. However, the challenges and strategies involved in IVCI implementation have not been described. METHODS: A qualitative description of one hospital's IVCI implementation was conducted. The research team interviewed 33 pharmacists, technologists, clinicians, nurse managers, educators, and organizational leaders; observed nurses on five units using EHR-integrated pumps; and attended nurse training. Interview notes and transcripts were analyzed to describe IVCI implementation, highlighting its effects on clinicians and the organization. RESULTS: Motivations for implementation included a culture of innovation, simultaneous pump and EHR upgrades, and belief that IVCI would improve patient safety. Proactive planning included a simultaneous go-live across selected units, financial investment, multidisciplinary planning teams, and clinical training. Challenges included lack of direct communication between EHR and pump vendors, nonstandardized unit-specific drug libraries, and unit- and nurse-specific variation in workflows for administering infusions. Mitigation strategies included serving as messenger between vendors, conducting hospitalwide efforts to standardize drug libraries and workflows, and standardizing organizational policies. Lessons learned included that IVCI adoption was as much a nursing workflow and organizational policy intervention as a technological implementation. CONCLUSION: Integrating infusion pumps and EHRs involves much more than installing new technologies. Hospitals considering IVCI should prepare to undertake significant simultaneous changes to organizational policies and clinician workflows.

Evaluating an Operator Physical Fitness Test Prototype for Tactical Air Control Party and Air Liaison Officers: A Preliminary Analysis of Test Implementation.

The U.S. Air Force asked the RAND Corporation to assist its development and validation of gender-neutral tests and standards for battlefield airmen (BA) specialties. The Air Force has conducted an extensive validation study of occupational relevance of physical fitness tests and standards. Following the fitness test validation study, one enlisted specialty (Tactical Air Control Party [TACP]) and one officer BA specialty (Air Liaison Officer [ALO]) moved forward with an implementation plan to further evaluate a set of recommended tests and continuation standards. This study describes RAND's assistance to the Air Force on two fronts: (1) conducting a preliminary evaluation of potential issues and concerns that might influence implementation effectiveness and (2) developing a framework for evaluating the implementation of occupationally relevant and specific tests and standards. This work provides the foundation for ongoing review and evaluation of Air Force fitness tests and standards, which are designed to ensure that airmen are capable of performing critical physical tasks associated with their assigned specialties.

Use of Internal Performance Measurement to Guide Improvement Within Medical Groups.

BACKGROUND: Public reporting of provider performance currently encompasses a range of measures of quality, cost, and patient experience of care. However, little is known about how medical groups use measures for performance improvement. This information could help medical groups undertake internal measurement while helping payers, policy makers, and measurement experts develop more useful publicly reported measures and quality improvement strategies. METHODS: An exploratory, qualitative study was conducted of ambulatory care medical groups across the United States that currently gather their own performance data. RESULTS: Eighty-three interviews were conducted with 91 individuals representing 37 medical groups. Findings were distilled into three major themes: (1) measures used internally, (2) strategies for using internal measurement for performance improvement, and (3) other uses of internal measurement. Medical groups used both clinical and business process measures, including measures from external measure sets and internally derived measures. Strategies for using internal measurement for quality improvement included taking a gradual, iterative approach and setting clear goals with high priority, finding workable approaches to data sharing, and fostering engagement by focusing on actionable measures. Measurement was also used to check accuracy of external performance reports, clarify and manage conflicting external measurement requirements, and prepare for anticipated external measurement requirements. Respondents in most groups did not report a need to assess costs of internal measurement or the capacity to do so. CONCLUSION: Despite challenges and barriers, respondents found great value in conducting internal measurement. Their experiences may provide valuable lessons and knowledge for medical group leaders in earlier stages of establishing internal measurement programs.

A Systematic Review in Support of the National Consensus Project Clinical Practice Guidelines for Quality Palliative Care, Fourth Edition.

CONTEXT: Palliative care continues to be a rapidly growing field aimed at improving quality of life for patients and their caregivers. OBJECTIVES: The purpose of this review was to provide a synthesis of the evidence in palliative care to inform the fourth edition of the National Consensus Project Clinical Practice Guidelines for Quality Palliative Care. METHODS: Ten key review questions addressing eight content domains guided a systematic review focused on palliative care interventions. We searched eight databases in February 2018 for systematic reviews published in English from 2013, after the last edition of National Consensus Project guidelines was published, to present. Experienced literature reviewers screened, abstracted, and appraised data per a detailed protocol registered in PROSPERO. The quality of evidence was evaluated using the Grading of Recommendations, Assessment, Development and Evaluations criteria. The review was supported by a technical expert panel. RESULTS: We identified 139 systematic reviews meeting inclusion criteria. Reviews addressed the structure and process of care (interdisciplinary team care, 13 reviews; care coordination, 18 reviews); physical aspects (48 reviews); psychological aspects (26 reviews); social aspects (two reviews); spiritual, religious, and existential aspects (11 reviews); cultural aspects (three reviews); care of the patient nearing the end of life (grief/bereavement programs, six reviews; final days of life, two reviews); ethical and legal aspects (36 reviews). CONCLUSION: A substantial body of evidence exists to support clinical practice guidelines for quality palliative care, but the quality of evidence is limited.

The Use of Technology in the Clinical Care of Depression: An Evidence Map.

OBJECTIVE: Depression is a highly prevalent clinical condition. The use of technologies in the clinical care of depressive disorders may increase the reach of clinical services for these disorders and support more comprehensive treatment. The objective of this evidence map is to provide an overview of the use of technology in the clinical care of depression. DATA SOURCES: We searched PubMed, PsycINFO, and the Web of Science from inception to June 2017 to identify published randomized controlled trials (RCTs). STUDY SELECTION: Two reviewers used predetermined eligibility criteria to review 4,062 records and include 161 RCTs that met our inclusion criteria. We include studies evaluating any type of treatment-related technology in the clinical care of depression. DATA EXTRACTION: We extracted data on sample sizes, the type of technology examined, the function of that technology, the effectiveness of the technology, and publication year. RESULTS: Out of 161 RCTs, we found the greatest amount of research for psychotherapy by computer (51 RCTs). The majority of studies were published after 2012 (94 RCTs; 58%). Few published studies involved videoconferences or smartphones, or provider feedback or auto-reminders. 145 studies (90%) reported that the intervention had a positive outcome of symptom improvement compared to baseline. CONCLUSIONS: This evidence map provides a broad overview of the existing research evaluating technology in depression care. Computer applications are still most common. Almost all applications yield symptom improvement. More information is needed to evaluate the role of technology in clinical care.

Effects of medication assisted treatment (MAT) for opioid use disorder on functional outcomes: A systematic review.

This systematic review synthesizes evidence on the effects of Medication-Assisted Treatment (MAT) for opioid use disorder (OUD) on functional outcomes, including cognitive (e.g., memory), physical (e.g., fatigue), occupational (e.g., return to work), social/behavioral (e.g., criminal activity), and neurological (e.g., balance) function. Five databases were searched from inception to July 2017 to identify English-language controlled trials, case control studies, and cohort comparisons of one or more groups; cross-sectional studies were excluded. Two independent reviewers screened identified literature, abstracted study-level information, and assessed the quality of included studies. Meta-analyses used the Hartung-Knapp method for random-effects models. The quality of evidence was assessed using the GRADE approach. A comprehensive search followed by 1411 full text publication screenings yielded 30 randomized controlled trials (RCTs) and 10 observational studies meeting inclusion criteria. The studies reported highly diverse functional outcome measures. Only one RCT was rated as high quality, but several methodologically sound observational studies were identified. The statistical power to detect differences in functional outcomes was unclear in most studies. When compared with matched "healthy" controls with no history of substance use disorder (SUD), in two studies MAT patients had significantly poorer working memory and cognitive speed. One study found MAT patients scored worse in aggressive responding than did "healthy" controls. A large observational study found that MAT users had twice the odds of involvement in an injurious traffic accident as non-users. When compared with persons with OUD not on MAT, one cohort study found lower fatigue rates among buprenorphine-treated OUD patients. No differences were reported for occupational outcomes and results for criminal activity and other social/behavioral areas were mixed. There were few differences among MAT drug types. A pooled analysis of three RCTs found a significantly lower prevalence of fatigue with buprenorphine compared to methadone, while a meta-analysis of the same RCTs found no statistical difference in insomnia prevalence. Three RCTs that focused on cognitive function compared the effects of buprenorphine to methadone; no statistically significant differences in memory, cognitive speed and flexibility, attention, or vision were reported. The quality of evidence for most functional outcomes was rated low or very low. In sum, weaknesses in the body of evidence prevent strong conclusions about the effects of MAT for opioid use disorder on functional outcomes. Rigorous studies of functional effects would strengthen the body of literature.

How does sagittal imbalance affect the appropriateness of surgical indications and selection of procedure in the treatment of degenerative scoliosis? Findings from the RAND/UCLA Appropriate Use Criteria study.

BACKGROUND CONTEXT: Degenerative lumbar scoliosis (DLS) is often associated with sagittal imbalance, which may affect patients' health outcomes before and after surgery. The appropriateness of surgery and preferred operative approaches has not been examined in detail for patients with DLS and sagittal imbalance. PURPOSE: The goals of this article were to describe what is currently known about the relationship between sagittal imbalance and health outcomes among patients with DLS and to determine how indications for surgery in patients with DLS differ when sagittal imbalance is present. STUDY DESIGN/SETTING: This study included a literature review and an expert panel using the RAND/University of California at Los Angeles (UCLA) Appropriateness Method. METHODS: To develop appropriate use criteria for DLS, researchers at the RAND Corporation recently employed the RAND/UCLA Appropriateness Method, which involves a systematic review of the literature and multidisciplinary expert panel process. Experts reviewed a synopsis of published literature and rated the appropriateness of five common operative approaches for 260 different clinical scenarios. In the present work, we updated the literature review and compared panelists' ratings in scenarios where imbalance was present versus absent. This work was funded by the Collaborative Spine Research Foundation, a group of surgical specialty societies and device manufacturers. RESULTS: On the basis of 13 eligible studies that examined sagittal imbalance and outcomes in patients with DLS, imbalance was associated with worse functional status in the absence of surgery and worse symptoms and complications postoperatively. Panelists' ratings demonstrated a consistent pattern across the diverse clinical scenarios. In general, when imbalance was present, surgery was more likely to be appropriate or necessary, including in some situations where surgery would otherwise be inappropriate. For patients with moderate to severe symptoms and imbalance, a deformity correction procedure was usually appropriate and frequently necessary, except in some patients with severe risk factors for complications. Conversely, procedures that did not correct imbalance, when present, were usually inappropriate. CONCLUSIONS: Clinical experts agreed that sagittal imbalance is a major factor affecting both when surgery is appropriate and which type of procedure is preferred among patients with DLS.

Recruiting Rural Healthcare Providers Today: a Systematic Review of Training Program Success and Determinants of Geographic Choices.

BACKGROUND: Rural areas have historically struggled with shortages of healthcare providers; however, advanced communication technologies have transformed rural healthcare, and practice in underserved areas has been recognized as a policy priority. This systematic review aims to assess reasons for current providers' geographic choices and the success of training programs aimed at increasing rural provider recruitment. METHODS: This systematic review (PROSPERO: CRD42015025403) searched seven databases for published and gray literature on the current cohort of US rural healthcare practitioners (2005 to March 2017). Two reviewers independently screened citations for inclusion; one reviewer extracted data and assessed risk of bias, with a senior systematic reviewer checking the data; quality of evidence was assessed using the GRADE approach. RESULTS: Of 7276 screened citations, we identified 31 studies exploring reasons for geographic choices and 24 studies documenting the impact of training programs. Growing up in a rural community is a key determinant and is consistently associated with choosing rural practice. Most existing studies assess physicians, and only a few are based on multivariate analyses that take competing and potentially correlated predictors into account. The success rate of placing providers-in-training in rural practice after graduation, on average, is 44% (range 20-84%; N = 31 programs). We did not identify program characteristics that are consistently associated with program success. Data are primarily based on rural tracks for medical residents. DISCUSSION: The review provides insight into the relative importance of demographic characteristics and motivational factors in determining which providers should be targeted to maximize return on recruitment efforts. Existing programs exposing students to rural practice during their training are promising but require further refining. Public policy must include a specific focus on the trajectory of the healthcare workforce and must consider alternative models of healthcare delivery that promote a more diverse, interdisciplinary combination of providers.

Evaluation of the Work Loss Data Institute's Official Disability Guidelines.

OBJECTIVE: The widely used Official Disability Guidelines (ODG), a utilization review guideline for occupational conditions, has not been independently evaluated recently. METHODS: We applied the appraisal of guidelines for research and evaluation (AGREE II) and modified a measurement tool to assess systematic reviews (AMSTAR) instruments to assess guideline development methods and the quality of supporting systematic reviews. Multidisciplinary experts rated the validity of clinical content for 47 topics. RESULTS: The overall AGREE II score was 58% due to a combination of favorable attributes (breadth, clear recommendations, frequent updating, and application tools) and unfavorable attributes (scant input from workers and uncertainty about editorial independence). The modified AMSTAR rating was fair/good due to limited information on methods. Panelists rated clinical content as valid for 41 topics. CONCLUSIONS: ODG appears to be acceptable to clinicians, but ODG requires greater rigor to keep pace with methodological advances in the field of guideline development.

City of Los Angeles Neighborhood Parks: Research Findings and Policy Implications (2003-2015).

This study summarizes more than a decade of research on how well neighborhood parks in Los Angeles support physical activity. Between 2003 and 2015, researchers at the RAND Corporation studied 83 parks in the city of Los Angeles, conducting thousands of observations and fielding nearly 28,000 surveys of park users and local residents. About half of all residents said that they used their neighborhood parks, most of them routinely. Parks are also the top venue that people choose for engaging in routine exercise. The majority of residents, including residents of low-income, high-crime neighborhoods, consider their neighborhood parks safe or very safe. We also found that parks get more use when they are larger, when they have more facilities, when they offer more planned activities and events, and when their services and activities are marketed to the public. While there is frequent activity in city parks, there is room for improvement. Parks are underutilized by girls and teenage girls, and they are especially underutilized by seniors. Overall, nearly half of all Los Angeles city residents living within 1 mile of a park did not use that park. Most did not know about the activities that were offered, and the majority of residents and more than a third of park users did not know the park's staff. Recommendations include devoting more resources to outreach and marketing. Los Angeles should also devote a larger proportion of its budget to city parks: Park spending per capita in Los Angeles is currently less than half of the per capita amounts that are spent by New York, Seattle, and San Francisco.

A systematic review of peer-supported interventions for health promotion and disease prevention.

Prior research has examined peer programs with respect to specific peer roles (e.g.; peer support) or specific health/wellness domains (e.g.; exercise/diet), or have aggregated effects across roles and domains. We sought to conduct a systematic review that categorizes and assesses the effects of peer interventions to promote health and wellness by peer role, intervention type, and outcomes. We use evidence mapping to visually catalog and synthesize the existing research. We searched PubMed and WorldCat databases (2005 to 2015) and New York Academy of Medicine Grey Literature Report (1999 to 2016) for English-language randomized control trials. We extracted study design, study participants, type of intervention(s), peer role(s), outcomes assessed and measures used, and effects from 116 randomized controlled trials. Maps were created to provide a visual display of the evidence by intervention type, peer role, outcome type, and significant vs null or negative effects. There are more null than positive effects across peer interventions, with notable exceptions: group-based interventions that use peers as educators or group facilitators commonly improve knowledge, attitudes, beliefs, and perceptions; peer educators also commonly improved social health/connectedness and engagement. Dyadic peer support influenced behavior change and peer counseling shows promising effects on physical health outcomes. Programs seeking to use peers in public health campaigns can use evidence maps to identify interventions that have previously demonstrated beneficial effects. Those seeking to produce health outcomes may benefit from identifying the mechanisms by which they expect their program to produce these effects and associated proximal outcomes for future evaluations. PROSPERO REGISTRATION NUMBER: Although we attempted to register our protocol with PROSPERO, we did not meet eligibility criteria because we were past the data collection phase. The full PROSPERO-aligned protocol is available from the authors.

Promoting physical activity in high-poverty neighborhood parks: A cluster randomized controlled trial.

Although physical activity can help mitigate or prevent multiple chronic diseases, most people in the U.S., especially high-poverty minority groups, engage in insufficient levels of physical activity. To test ways to promote more physical activity in high-poverty area public parks we conducted a randomized controlled intervention trial. After completing baseline measures of park-based physical activity using systematic direct observation three times/day each month for six months and assessing preferences for park programming among 1445 residents living within 1 mile of study parks, we randomized 48 parks in high poverty neighborhoods in the City of Los Angeles, California during 2013-2014 to four study arms: 1) free physical activity classes over a 6-month period, 2) a frequent user program where participants could win prizes based upon the number of visits they made to the park, 3) both the programs, and 4) neither one (control condition). We re-measured park use in 2014-2015 using the same methods during the six months the intervention programs were in operation. A total of 2047 free park classes were offered attracting 16,718 participants. The frequent user programs enrolled 1452 individuals and prizes were awarded to 830. Residents in the two study arms with free classes were more likely to report being aware of and participating in park-based physical activity programs; however, overall observed park-based physical activity increased similarly across all study arms. The process evaluation uncovered several barriers to program implementation, including inconsistent scheduling of classes, partly due to safety concerns among instructors. Multiple social factors interfere with leisure time physical activity among low-income populations, suggesting modest interventions may be insufficient to overcome these issues. Although new park programs can attract users, new programs alone may be insufficient to increase overall park use in low-income neighborhoods at times when the programs are not taking place.

The Paradox of Parks in Low-Income Areas: Park Use and Perceived Threats.

Concerns about safety and perceived threats have been considered responsible for lower use of parks in high poverty neighborhoods. To quantify the role of perceived threats on park use we systematically observed 48 parks and surveyed park users and household residents in low-income neighborhoods in the City of Los Angeles. Across all parks, the majority of both park users and local residents perceive parks as safe or very safe. We noted apparently homeless individuals during nearly half of all observations, but very few instances of fighting, intimidating groups, smoking and intoxication. The presence of homeless individuals was associated with higher numbers of park users, while the presence of intoxicated persons was associated with lower numbers. Overall the strongest predictors of increased park use were the presence of organized and supervised activities. Therefore, to increase park use, focusing resources on programming may be more fruitful than targeting perceived threats.

Surgery for Degenerative Lumbar Scoliosis: The Development of Appropriateness Criteria.

STUDY DESIGN: The RAND/UCLA Appropriateness Method is a well-established means of developing criteria for assessing the appropriateness of surgery in specific subpopulations. It involves a systematic review of the literature and ratings by a multidisciplinary panel of national experts. OBJECTIVE: To evaluate the appropriateness of surgical interventions for degenerative lumbar scoliosis (DLS), including identifying clinical characteristics that influence when surgery is inappropriate, appropriate, or necessary, and which procedures are preferable. SUMMARY OF BACKGROUND DATA: DLS presents with diverse clinical symptoms and radiographic findings. Variability exists in both nonoperative and operative management. The appropriateness of surgery, and of specific surgical procedures, has not been defined for this important pathology of the aging spine. METHODS: We selected a panel of 11 experts, including surgical specialists from multiple disciplines. Next, we systematically reviewed relevant literature. Finally, in a three-round, modified-Delphi process, panelists rated the appropriateness and necessity of five different surgical procedures (dependent variables) on a nine-point scale for 260 different clinical scenarios that stratified patients according to age, medical comorbidities, symptoms, signs, and radiographic variables (independent variables). RESULTS: The 59 eligible studies identified via the systematic review were generally small or used weak designs. Panelists judged that surgery was generally appropriate for patients with at least moderate symptoms and larger or progressive deformities, moderate spinal or foraminal stenosis, or sagittal plane imbalance. Surgery was generally inappropriate for mild symptoms and smaller stable deformities, without sagittal imbalance or moderate stenosis, particularly among patients with advanced age and multiple comorbidities. For patients with larger or progressive deformities, imbalance, or severe multilevel stenosis, more extensive fusion and deformity correction procedures were generally preferred. CONCLUSION: Defining the appropriateness of surgery for patients with DLS will be useful to improve evidence-based clinical decision making as well as the consistency and quality of care for patients with DLS. LEVEL OF EVIDENCE: 3.

Validation of a New Counter for Direct Observation of Physical Activity in Parks.

PURPOSE: This study aims to examine the reliability of a 12-button counter to simultaneously assess physical activity (PA) by age and gender subgroups in park settings. METHODS: A total of 1,160 pairs of observations were conducted in 481 target areas of 19 neighborhood parks in the great Los Angeles, California, area between June 2013 and March 2014. Interrater reliability was assessed by Pearson's correlation, intraclass correlation (ICC), and agreement probability in metabolic equivalents (METs). Cosine similarity was used to check the resemblance of distributions among age and gender categories. Pictures taken in a total of 112 target areas at the beginning of the observations were used as a second reliability check. RESULTS: Interrater reliability was high for the total METs and METs in all age and gender categories (between 0.82 and 0.97), except for male seniors (correlations and ICC between 0.64 and 0.77, agreement probability 0.85 to 0.86). Reliability was higher for total METs than for METs spent in moderate-to-vigorous PA. Correlation and ICC between observers' measurement and picture-based counts are also high (between 0.79 and 0.94). CONCLUSION: Trained observers can reliably use the 12-button counter to accurately assess PA distribution and disparities by age and gender.

Effects of Health Care Payment Models on Physician Practice in the United States.

The project reported here, sponsored by the American Medical Association (AMA), aimed to describe the effects that alternative health care payment models (i.e., models other than fee-for-service payment) have on physicians and physician practices in the United States. These payment models included capitation, episode-based and bundled payment, shared savings, pay for performance, and retainer-based practice. Accountable care organizations and medical homes, which are two recently expanding practice and organizational models that frequently participate in one or more of these alternative payment models, were also included. Project findings are intended to help guide efforts by the AMA and other stakeholders to make improvements to current and future alternative payment programs and help physician practices succeed in these new payment models-i.e., to help practices simultaneously improve patient care, preserve or enhance physician professional satisfaction, satisfy multiple external stakeholders, and maintain economic viability as businesses. The article provides both findings and recommendations.