Regional variation in hip and knee arthroplasty rates in Switzerland: A population-based small area analysis.

BACKGROUND: Compared to other OECD countries, Switzerland has the highest rates of hip (HA) and knee arthroplasty (KA). OBJECTIVE: We assessed the regional variation in HA/KA rates and potential determinants of variation in Switzerland. METHODS: We conducted a population-based analysis using discharge data from all Swiss hospitals during 2013-2016. We derived hospital service areas (HSAs) by analyzing patient flows. We calculated age-/sex-standardized procedure rates and measures of variation (the extremal quotient [EQ, highest divided by lowest rate] and the systemic component of variation [SCV]). We estimated the reduction in variance of HA/KA rates across HSAs in multilevel regression models, with incremental adjustment for procedure year, age, sex, language, urbanization, socioeconomic factors, burden of disease, and the number of orthopedic surgeons. RESULTS: Overall, 69,578 HA and 69,899 KA from 55 HSAs were analyzed. The mean age-/sex-standardized HA rate was 265 (range 179-342) and KA rate was 256 (range 186-378) per 100,000 persons and increased over time. The EQ was 1.9 for HA and 2.5 for KA. The SCV was 2.0 for HA and 2.2 for KA, indicating a low variation across HSAs. When adjusted for procedure year and demographic, cultural, and sociodemographic factors, the models explained 75% of the variance in HA and 63% in KA across Swiss HSAs. CONCLUSION: Switzerland has high HA/KA rates with a modest regional variation, suggesting that the threshold to perform HA/KA may be uniformly low across regions. One third of the variation remained unexplained and may, at least in part, represent differing physician beliefs and attitudes towards joint arthroplasty.

Cost impact of sobering centers on national health care spending in the United States.

Acute alcohol intoxication is responsible for a sizable share of emergency department visits. Intoxicated individuals without other medical needs may not require the high level of care provided by an emergency department. We estimate the impact on U.S. health care spending if individuals with uncomplicated, acute alcohol intoxication were treated in sobering centers instead of the emergency department. We performed a budget impact analysis from the perspective of the U.S. health care system based on published and gray literature reports. Ninety-five percent confidence intervals (CI) were estimated using Monte Carlo modeling with random variation for three variables (cost of an emergency department visit, cost of a sobering center visit, and start-up costs per sobering center visit) and the percentage of cases diverted from emergency departments to sobering centers. Outcomes were expressed in terms of national savings in 2017 U.S. dollars. Assuming a diversion rate of 50% based on previous studies, national savings range from $230 million to $1.0 billion annually. In the Monte Carlo modeling, we found annual national savings of $99.02 million (95% CI: $95.89-$102.19 million), $792.34 million (95% CI: $767.09-$817.58 million), and $1,185.51 million (95% CI: $1,150.64-$1,226.37 million) with diversion rates of 5%, 40%, and 60%, respectively. Implementing sobering centers as a treatment alternative for individuals with uncomplicated acute alcohol intoxication could yield substantial cost savings for the U.S. health care system.

Smoking-Cessation Interventions in Appalachia: A Systematic Review and Meta-Analysis.

CONTEXT: Appalachia, a socioeconomically disadvantaged rural region in the eastern U.S., has one of the nation's highest prevalence rates of smoking and some of the poorest health outcomes. Effective interventions that lower smoking rates in Appalachia have great potential to reduce health disparities and preventable illness; however, a better understanding of effective interventions is needed. EVIDENCE ACQUISITION: This review included trials that evaluated the impact of smoking-cessation programs among populations living in Appalachia. The search was carried out on October 9, 2018 and comprised the Cochrane Central Register of Controlled Trials, Medline, Embase, and Scopus for academic journal articles published in English, with no date restrictions. After preliminary screening, potentially relevant full-text articles were independently reviewed by the authors with a Cohen's κ of 0.72, leading to the final inclusion of 9 articles. EVIDENCE SYNTHESIS: Eligible studies were assessed qualitatively for heterogeneity and risk of bias. Six of the 9 included studies had extractable data related to dichotomous smoking status and reported a measure of association suitable for inclusion in a meta-analysis. For those 6 studies, the pooled RR and pooled OR were estimated using random effects models, with an I2 index demonstrating substantial heterogeneity. A funnel plot of the 6 trials appeared relatively symmetric. CONCLUSIONS: Participation in smoking-cessation interventions increased the probability of smoking abstinence among Appalachian smokers by an estimated 2.33 times (pooled RR=2.33, 95% CI=1.03, 5.25, p=0.04). Given the low number of studies, their substantial heterogeneity, and high risk of bias, the evidence of the effectiveness of smoking-cessation interventions in Appalachia must be interpreted with caution.

The role of economic analyses in promoting adoption of behavioral and psychosocial interventions in clinical settings.

In this report, we offer three examples of how economic data could promote greater adoption of behavioral and psychosocial interventions in clinical settings where primary or specialty medical care is delivered to patients. The examples are collaborative care for depression, chronic pain management, and cognitive-behavioral therapy for insomnia. These interventions illustrate differences in the availability of cost and cost-effectiveness data and in the extent of intervention adoption and integration into routine delivery of medical care. Collaborative care has been widely studied from an economic perspective, with most studies demonstrating its relative cost-effectiveness per quality-adjusted life year (QALY) and some studies demonstrating its potential for cost neutrality or cost savings. The success of collaborative care for depression can be viewed as a model for how to promote greater adoption of other interventions, such as psychological therapies for chronic pain and insomnia. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Economic Benefit of "Modern" Nonemergency Medical Transportation That Utilizes Digital Transportation Networks.

OBJECTIVES: To determine the economic benefit of "modern" nonemergency medical transportation (NEMT) that utilizes digital transportation networks compared with traditional NEMT in the United States. METHODS: We used the National Academies' NEMT cost-effectiveness model to perform a baseline cost savings analysis for provision of NEMT for transportation-disadvantaged Medicaid beneficiaries. On the basis of a review of the literature, commercial information, and structured expert interviews, we performed a sensitivity analysis to determine the incremental economic benefit of using modern NEMT. We estimated confidence intervals (CIs) by using Monte Carlo simulation. RESULTS: Total annual net savings for traditional NEMT in Medicaid was approximately $4 billion. For modern NEMT, estimated savings on ride costs varied from 30% to 70%. In comparison with traditional, modern NEMT was estimated to save $268 per expected user (95% CI = $248, $288 per member per year) and $537 million annually (95% CI = $496 million, $577 million) when scaled nationally. CONCLUSIONS: Modern NEMT has the potential to yield greater cost savings than traditional NEMT while also improving patient experience. Public Health Implications: Barriers to NEMT are a health risk affecting high-need, economically disadvantaged patients. Economic arguments supporting modern NEMT are important given decreased support for human services spending.

Unwarranted regional variation in vertebroplasty and kyphoplasty in Switzerland: A population-based small area variation analysis.

BACKGROUND: Percutaneous vertebroplasty (VP) and balloon kyphoplasty (BKP) for treating painful osteoporotic vertebral fractures are controversial. OBJECTIVE: We assessed the regional variation in the use of VP/BKP in Switzerland. METHODS: We conducted a population-based small area variation analysis using patient discharge data for VP/BKP from all Swiss hospitals and Swiss census data for calendar years 2012/13. We derived hospital service areas (HSAs) by analyzing patient flows, assigning regions from which most residents were discharged to the same VP/BKP specific HSA. We calculated age-/sex-standardized mean VP/BKP-rates and measures of regional variation (extremal quotient [EQ], systematic component of variation [SCV]). We estimated the reduction in variation of VP/BKP rates using negative binomial regression, with adjustment for patient demographic and regional socioeconomic factors (socioeconomic status, urbanization, and language region). We considered the residual, unexplained variation most likely to be unwarranted. RESULTS: Overall, 4955 VP/BKPs were performed in Switzerland in 2012/13. The age-/sex-standardized mean VP/BKP rate was 4.6/10,000 persons and ranged from 1.0 to 10.1 across 26 HSAs. The EQ was 10.2 and the SCV 57.6, indicating a large variation across VP/BKP specific HSAs. After adjustment for demographic and socioeconomic factors, the total reduction in variance was 32.2% only, with the larger part of the variation remaining unexplained. CONCLUSIONS: We found a 10-fold variation in VP/BKP rates across Swiss VP/BKP specific HSAs. As only one third of the variation was explained by differences in patient demographics and regional socioeconomic factors, VP/BKP in the highest-use areas may, at least partially, represent overtreatment.

[Hyponatremia]. / Hyponatriämie.

Hyponatremia is the most common electrolyte disorder in clinical practice and is associated with increased mortality in hospitalized patients. Sodium is the predominant extracellular cation and, together with its anion chloride, constitutes most of the osmoles in the extracellular space. In the presence of an intact thirst sensation, serum osmolality is set by the mechanisms of salt and water homeostasis to ~280-290 mOsm/kg. Hyponatremia results from excess of free water more often than from lack of salt. Free water clearance is regulated by the antidiuretic hormone and depends on adequate delivery of solute to the diluting segments of the nephron. Analysis of hyponatremia is best performed in a systematic manner, taking into account measured or calculated serum osmolality and the volume state as assessed clinically. Urinary osmolality and sodium concentration may facilitate the differential diagnosis. Therapy of hyponatremia should aim at correcting the underlying disorder. Only in severe, symptomatic hyponatremia should hypertonic saline be infused, in which case care should be taken to avoid complications such as osmotic demyelination.