Adult Emergency Department Visits Research Articles

Use of a Large Language Model to Assess Clinical Acuity of Adults in the Emergency Department

The introduction of large language models (LLMs), such as Generative Pre-trained Transformer 4 (GPT-4; OpenAI), has generated significant interest in health care, yet studies evaluating their performance in a clinical setting are lacking. Determination of clinical acuity, a measure of a patient's illness severity and level of required medical attention, is one of the foundational elements of medical reasoning in emergency medicine. To determine whether an LLM can accurately assess clinical acuity in the emergency department (ED). This cross-sectional study identified all adult ED visits from January 1, 2012, to January 17, 2023, at the University of California, San Francisco, with a documented Emergency Severity Index (ESI) acuity level (immediate, emergent, urgent, less urgent, or nonurgent) and with a corresponding ED physician note. A sample of 10 000 pairs of ED visits with nonequivalent ESI scores, balanced for each of the 10 possible pairs of 5 ESI scores, was selected at random. The potential of the LLM to classify acuity levels of patients in the ED based on the ESI across 10 000 patient pairs. Using deidentified clinical text, the LLM was queried to identify the patient with a higher-acuity presentation within each pair based on the patients' clinical history. An earlier LLM was queried to allow comparison with this model. Accuracy score was calculated to evaluate the performance of both LLMs across the 10 000-pair sample. A 500-pair subsample was manually classified by a physician reviewer to compare performance between the LLMs and human classification. From a total of 251 401 adult ED visits, a balanced sample of 10 000 patient pairs was created wherein each pair comprised patients with disparate ESI acuity scores. Across this sample, the LLM correctly inferred the patient with higher acuity for 8940 of 10 000 pairs (accuracy, 0.89 [95% CI, 0.89-0.90]). Performance of the comparator LLM (accuracy, 0.84 [95% CI, 0.83-0.84]) was below that of its successor. Among the 500-pair subsample that was also manually classified, LLM performance (accuracy, 0.88 [95% CI, 0.86-0.91]) was comparable with that of the physician reviewer (accuracy, 0.86 [95% CI, 0.83-0.89]). In this cross-sectional study of 10 000 pairs of ED visits, the LLM accurately identified the patient with higher acuity when given pairs of presenting histories extracted from patients' first ED documentation. These findings suggest that the integration of an LLM into ED workflows could enhance triage processes while maintaining triage quality and warrants further investigation.

Acetaminophen overdose: analysis of 2018 US nationwide emergency database.

Recognized risk factors for acetaminophen overdose include alcohol, opioids, and mood disorders. The aim of this study is to assess additional risk factors for acetaminophen overdose evaluated in the emergency department (ED). A retrospective study was performed using the 2018 US Nationwide Emergency Department Sample (NEDS). All adult ED visits for acetaminophen overdose were included in the study group and those without it were taken as control. STATA, 16.1 was used to perform multivariable logistic regression analysis and adjusted odds ratios (ORadj) were reported. We identified 27,792 ED visits for acetaminophen overdose. Relative to non-acetaminophen ED visits, this group was younger (median age 32 vs 47years; p < 0.0001), more oftenfemale (66.1% vs 57.0%; p < 0.0001), had higher ED charges ($3,506 vs $2,714; p < 0.0001), higher proportion of alcohol-related disorders (15.8% vs 3.5%; p < 0.0001), anxiety disorders (30.2% vs 8.3%; p < 0.0001), cannabis use (8.7% vs 1.4%; p < 0.0001), hematology/oncology diagnoses (13.3% vs 10.9%; p < 0.0001), mood disorders (52.4% vs 7.9%; p < 0.0001), opioid-related disorders (4.1% vs 1.0%; p < 0.0001), and suicide attempt/ideation (12.2% vs 1.1%; p < 0.0001). Multivariable analysis showed alcohol-related disorders (ORadj 2.67), anxiety disorders (ORadj 1.24), cannabis (ORadj 1.63), females (ORadj 1.45), Income Q3 (ORadj 1.09), hematology/oncology diagnoses (ORadj 1.40), mood disorders (ORadj 10.07), opioid-related disorders(ORadj 1.20), and suicide attempt/ideation (ORadj 1.68) were associated with acetaminophen overdose. In addition to previously recognized risks, our study demonstrated thatcannabis use and hematologic/oncologic comorbidities were more common among acetaminophen-overdose ED visits. These newfindings are concerning because of rapid legalization of cannabis and the increasing incidence of cancerworldwide. Additionalinvestigation into these risksshould be a priorityfor clinicians, policymakers, and researchers.

Defective Assistive Device Involvement in Older Adult Emergency Department Visits.

Many older adults adopt equipment to address physical limitations and reduce dependence on others to complete basic activities of daily living. Although a few prior studies have considered injuries associated with assistive devices for older adults, those studies focused on older adults' health and functional risks for injury. There is limited analysis of older adult injuries involving defective or malfunctioning assistive devices. Data from this study are from the National Electronic Surveillance System All Injury Program which collected data on consumer product-related injuries from a probability sample of 66 hospital Emergency Departments across the United States. Data from 30776 older adult Emergency Department (ED) injury narratives from 2016 to 2020 were coded according to the assistive device involved and whether malfunctioning led to the injury. The study team manually examined all narratives in which the assistive device was coded to have malfunctioned. A total of 10974 older adult ED cases were treated for 12488 injuries involving a defective device. Injuries included 4212 head and neck injuries (eg, concussion), 4317 trunk injuries (eg, hip fractures), and 3959 arm or leg injuries (eg, leg fracture). Of these patients, 4586 were admitted to a hospital ward for further evaluation and treatment. Seventy percent of these patients were injured while using a walker; in contrast, wheelchairs were implicated in only 4% of the above cases. Design flaws were identified in 8158 cases and part breakage/decoupling incidents in 2816 cases. Our findings provide evidence that assistive devices are actively involved in older adult injuries. Further research is needed to reduce injuries associated with assistive devices by educating patients and their careproviders about device use and assembly and developing effective methods for informing manufacturers about malfunctioning devices.

Muğla İlinde Erişkin Acil Sağlık Hizmetleri Kullanım Epidemiyolojisi

Objective: This study aims to investigate the epidemiological characteristics and patterns of Emergency Medical Services (EMS) use among adults who presented to the emergency department (ED).&#x0D; Methods: A single-center, cross-sectional, and observational study was retrospectively conducted at the ED of a university-affiliated training and research hospital in Muğla, Turkey from July 2019 to January 2022.&#x0D; Results: During the study period, a total of 280,691 adult ED visits were recorded in the hospital's electronic health data system, with 31,671 (11.3%) consecutive critically ill or injured patients arriving via ambulances. The mean age of enrolled patients was 57.1±21.8 years (range, 18-112 years) and 56.4% of them were male. Of these, 41% (n=13,014) were admitted to the hospital (30.4% to wards and 10.6% to the intensive care unit), and the all-cause in-ED mortality rate was 0.7% (n=223). Public EMS was used in 97.6% of the cases, with the remaining 2.4% utilizing private ambulance services. EMS use percentages for critical illness, traffic accidents, and occupational accidents were 91.8%, 6.5%, and 1.7%, respectively. The triage codes were categorized as yellow (87.6%), red (12%), black (0.2%), and green (0.2%).&#x0D; Conclusions: Further investigation is necessary to better understand the operational, training, and public health implications of adult EMS use.

Racial Differences in Triage for Emergency Department Patients with Subjective Chief Complaints.

Introduction: Black and Hispanic patients are frequently assigned lower acuity triage scores than White patients. This can lead to longer wait times, less aggressive care, and worse outcomes. In this study we aimed to determine whether these effects are more pronounced for patients with subjective complaints. Methods: We performed a retrospective analysis for all adult visits between 2016-2019 at an urban academic emergency department (ED) with acuity-based pods. We determined rates of initial high-acuity triage both across all patients and among the subset located in the high-acuity pod at time of disposition (either through initial assignment or subsequent up-triage). Analysis was performed for common chief complaints categorized as subjective (chest pain, dyspnea, any pain); observed (altered mental status); numeric (fever, hypotension); or protocolized (stroke, ST-elevation myocardial infarction). We constructed logistic regression models to control for age, race, gender, method of arrival, and final disposition. Results: We analyzed 297,355 adult ED visits. Black and Hispanic patients were less likely to be triaged to high-acuity beds (adjusted odds ratio [aOR] 0.76, 95% confidence interval [CI] 0.73-0.79 for Black, and aOR 0.87, 95% CI 0.84-0.90 for Hispanic patients). This effect was more pronounced for those with subjective chief complaints, including chest pain (aOR 0.76, 95% CI 0.73-0.79 for Black and 0.88, 95% CI 0.78-0.99 for Hispanic patients), dyspnea (aOR 0.79, 95% CI 0.68-0.92 and 0.8, 95% CI 0.72-0.99), and any pain (aOR 0.83, 95% CI 0.75-0.92 and 0.89, 95% CI 0.82-0.97, respectively). Among patients in the high-acuity pod at time of disposition, Black and Hispanic patients were disproportionately triaged to lower acuity pods on arrival (aOR 1.47, 95% CI 1.33-1.63 for Black and aOR 1.27, 95% CI 1.15-1.40 for Hispanic adults), with significant differences observed only for subjective chief complaints. No differences were observed for observed, objective, or protocolized complaints in either analysis. Conclusion: Black and Hispanic adults, including those who ultimately required high-acuity resources, were disproportionately triaged to lower acuity pods. This effect was more pronounced for patients with subjective chief complaints. Additional work is needed to identify and overcome potential bias in the assessment of patients with subjective chief complaints in ED triage.

Racial Inequities in Police Transport for Patients to the Emergency Department: A Multicenter Analysis

Police involvement in patient transport to emergency medical care has increased over time, yet studies assessing racial inequities in transport are limited. This study evaluated the relationship between race and police transport to the emergency department for adult patients. This cross-sectional study evaluated adult (aged ≥18 years) visits at 13 different emergency departments across two regional hospital systems in the Southeastern and Northeastern U.S. from 2015 to 2022. Data were extracted from electronic health records. This analysis evaluated the association between race and transport by police transport using generalized linear multivariable mixed model with a binary logistic link for presence of police transport. Data were nested by patient and adjusted for site, demographics, and diagnostic visit characteristics. Of 4,291,809 adult emergency department visits, 25,901 (0.6%) involved transport by police. Of the 25,901 visits in police-involved encounters, 10,513 (40.6%) patients were Black, and 9,827 (37.9%) were White. The adjusted model showed that Black patients were at higher odds of transport by police than White patients (AOR=1.64; 95% CI=1.57-1.72). Male sex, younger age (18-35 years), history of behavioral health diagnosis, and emergency department psychiatric or substance use disorders were independently associated with increased odds of police transport. This analysis revealed racial inequities in police-involved transport to emergency medical care, highlighting an urgent need to evaluate drivers of inequities and the ways in which police transport influences clinical outcomes.

Existing Data Sources in Clinical Epidemiology: Database of Community Acquired Infections Requiring Hospital Referral in Eastern Denmark (DCAIED) 2018-2021.

Infectious diseases are major health care challenges globally and a prevalent cause of admission to emergency departments. Epidemiologic characteristics and outcomes based on population level data are limited. The Database of Community Acquired Infections in Eastern Denmark (DCAIED) 2018-2021 was established with the aim to explore and estimate the population characteristics, and outcomes of patients suffering from community acquired infections at the emergency departments in the Capital Region and the Zealand Region of Denmark using data from electronic medical records. Adult patients (≥18 years) presenting to the emergency department with suspected or confirmed infection are included in the cohort. Presence of sepsis and organ failure are assessed using modified criteria from the Third International Consensus Definitions for Sepsis and Septic Shock (Sepsis-3). During the inclusion period from January 2018 to January 2022, 2,241,652 adult emergency department visits have been registered. Of these, 451,825 were unique encounters of which 60,316 fulfilled criteria of suspected infection and 28,472 fulfilled sepsis criteria and 8,027 were defined as septic shock. The database covers the entire Capital and Zealand Region of Denmark with an uptake area of 2.6 million inhabitants and includes demographic, laboratory and outcome indicators, with complete follow-up. The database is well-suited for epidemiological research for future national and international collaborations.

Emergency department course of patients with asthma receiving initial emergency medical services care-Perspectives From the National Hospital Ambulatory Medical Care Survey.

Although 911 calls for acute shortness of breath are common, the role of emergency medical services (EMS) in acute asthma care is unclear. We sought to characterize the demographics, course, and outcomes of adult emergency department (ED) patients with asthma in the United States receiving initial EMS care. We analyzed data from the 2016-2019 National Hospital Ambulatory Medical Care Survey (NHAMCS). We included patients aged ≥18 years with an ED visit diagnosis of asthma, stratifying the cases according to initial EMS care. Accounting for the survey design of NHAMCS, we generated nationalized estimates of the number of EMS and non-EMS asthma visits. Using logistic regression, we determined the associations between initial EMS care and patient demographics (age, sex, race, and insurance type), ED course (initial vital signs, triage category, testing, medications), and outcomes (hospital admission, ED length of stay). Of 435million adult ED visits during 2016-2019, there were ≈5.3million related to asthma (1.3million annually, 1.2%; 95% confidence interval [CI], 1.1%-1.4%). A total of 602,569 (150,642 annually, 11.3%; 95% CI, 8.6%-14.8%) ED patients with asthma received initial EMS care. Compared with non-EMS asthma patients, EMS asthma patients were more likely to present with an "urgent" ED triage category (odds ratio [OR], 22.2; 95% CI, 6.6-74.9) and to undergo laboratory (OR, 2.78; 95% CI, 1.41-5.46) or imaging tests (OR, 2.42; 95% CI, 1.21-4.83). ED patients with asthma receiving initial EMS care were almost 3 times more likely to be admitted to the hospital (OR, 2.81; 95% CI, 1.27-6.25). There were no differences in demographics, ED use of β-agonists or corticosteroids, or ED length of stay between EMS and non-EMS asthma patients. Approximately 1 in 10 adult ED patients with asthma receive initial care by EMS. EMS asthma patients present to the ED with higher acuity, undergo more diagnostic testing in the ED, and are more likely to be admitted. Although limited in information regarding the prehospital course, these findings highlight the more severe illness of asthma patients transported by EMS and underscore the importance of EMS in emergency asthma care.

Association of red blood cell distribution width with hospital admission and in-hospital mortality across all-cause adult emergency department visits.

To test the association between the initial red blood cell distribution width (RDW) value in the emergency department (ED) and hospital admission and, among those admitted, in-hospital mortality. We perform a retrospective analysis of 210 930 adult ED visits with complete blood count results from March 2013 to February 2022. Primary outcomes were hospital admission and in-hospital mortality. Variables for each visit included demographics, comorbidities, vital signs, basic metabolic panel, complete blood count, and final diagnosis. The association of each outcome with the initial RDW value was calculated across 3 age groups (<45, 45-65, and >65) as well as across 374 diagnosis categories. Logistic regression (LR) and XGBoost models using all variables excluding final diagnoses were built to test whether RDW was a highly weighted and informative predictor for each outcome. Finally, simplified models using only age, sex, and vital signs were built to test whether RDW had additive predictive value. Compared to that of discharged visits (mean [SD]: 13.8 [2.03]), RDW was significantly elevated in visits that resulted in admission (15.1 [2.72]) and, among admissions, those resulting in intensive care unit stay (15.3 [2.88]) and/or death (16.8 [3.25]). This relationship held across age groups as well as across various diagnosis categories. An RDW >16 achieved 90% specificity for hospital admission, while an RDW >18.5 achieved 90% specificity for in-hospital mortality. LR achieved a test area under the curve (AUC) of 0.77 (95% confidence interval [CI] 0.77-0.78) for hospital admission and 0.85 (95% CI 0.81-0.88) for in-hospital mortality, while XGBoost achieved a test AUC of 0.90 (95% CI 0.89-0.90) for hospital admission and 0.96 (95% CI 0.94-0.97) for in-hospital mortality. RDW had high scaled weights and information gain for both outcomes and had additive value in simplified models predicting hospital admission. Elevated RDW, previously associated with mortality in myocardial infarction, pulmonary embolism, heart failure, sepsis, and COVID-19, is associated with hospital admission and in-hospital mortality across all-cause adult ED visits. Used alone, elevated RDW may be a specific, but not sensitive, test for both outcomes, with multivariate LR and XGBoost models showing significantly improved test characteristics. RDW, a component of the complete blood count panel routinely ordered as the initial workup for the undifferentiated patient, may be a generalizable biomarker for acuity in the ED.

Frailty and emergency department utilisation in adults with systemic lupus erythematosus ≤65 years of age: an administrative claims data analysis of Medicaid beneficiaries

ObjectiveFrailty is a risk factor for adverse health in adults with SLE, including those <65 years. Emergency department (ED) utilisation is high in adults with SLE, but to our knowledge,...

Acute exacerbation of chronic obstructive pulmonary disease in United States emergency departments, 2010–2018

ObjectivesLittle is known about the recent status of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) in the U.S. emergency department (ED). This study aimed to describe the disease burden (visit and hospitalization rate) of AECOPD in the ED and to investigate factors associated with the disease burden of AECOPD.MethodsData were obtained from the National Hospital Ambulatory Medical Care Survey (NHAMCS), 2010–2018. Adult ED visits (aged 40 years or above) with AECOPD were identified using International Classification of Diseases codes. Analysis used descriptive statistics and multivariable logistic regression accounting for NHAMCS’s complex survey design.ResultsThere were 1,366 adult AECOPD ED visits in the unweighted sample. Over the 9-year study period, there were an estimated 7,508,000 ED visits for AECOPD, and the proportion of AECOPD visits in the entire ED population remained stable at approximately 14 per 1,000 visits. The mean age of these AECOPD visits was 66 years, and 42% were men. Medicare or Medicaid insurance, presentation in non-summer seasons, the Midwest and South regions (vs. Northeast), and arrival by ambulance were independently associated with a higher visit rate of AECOPD, whereas non-Hispanic black or Hispanic race/ethnicity (vs. non-Hispanic white) was associated with a lower visit rate of AECOPD. The proportion of AECOPD visits that were hospitalized decreased from 51% to 2010 to 31% in 2018 (p = 0.002). Arrival by ambulance was independently associated with a higher hospitalization rate, whereas the South and West regions (vs. Northeast) were independently associated with a lower hospitalization rate. The use of antibiotics appeared to be stable over time, but the use of systemic corticosteroids appeared to increase with near statistical significance (p = 0.07).ConclusionsThe number of ED visits for AECOPD remained high; however, hospitalizations for AECOPD appeared to decrease over time. Some patients were disproportionately affected by AECOPD, and certain patient and ED factors were associated with hospitalizations. The reasons for decreased ED admissions for AECOPD deserve further investigation.

The role of social connections and support in the use of emergency care among older adults

ObjectivesLimited and inconsistent findings have been reported on the link between social connections and support and emergency department (ED) visits in older populations. Moreover, the adequacy of informal care for older adults has rarely been considered. This study explored the associations of social connections, social support, and informal care with ED visits in younger-old (<78 years) and oldest-old (≥78 years) adults. MethodsThis is a prospective cohort study based on community-living adults ≥60 years old participating in the Swedish National Study on Aging and Care in Kungsholmen (N=3066 at wave 1, 2001-2004; N=1885 at wave 3, 2007-2010; N=1208 at wave 5, 2013-2016). Standardised indexes were developed to measure social connections, social support, and informal care. The outcome variable was hospital-based ED visits within 4 years of the SNAC-K interview. Associations between exposure variables and ED visits were assessed through negative binomial regressions using generalised estimating equations. ResultsMedium (IRR 0.77; 95% CI 0.59–0.99) and high (IRR 0.77; 95% CI 0.56–0.99) levels of social support were negatively associated with ED visits compared to low levels of social support, but only in oldest-old adults. No statistically significant associations were observed between social connections and ED visits. Higher ED visit rates were seen in oldest-old adults with unmet informal care needs, even if the differences did not reach statistical significance. ConclusionsED visits were associated with social support levels among adults aged ≥78 years. Public health interventions to mitigate situations of poor social support may improve health outcomes and reduce avoidable ED visits in oldest-old adults.

Inhaled Corticosteroids Rarely Prescribed at Emergency Department Discharge Despite Low Rates of Follow-Up Care

BackgroundGuidelines recommend an inhaled corticosteroid (ICS) prescription on emergency department (ED) discharge after acute asthma exacerbations. ObjectiveWe sought to identify rates and predictors of ICS prescription at ED discharge. Secondary outcomes included ICS prescription rates in a high-risk subgroup, outpatient follow-up rates within 30 days, and variation in ICS prescriptions among attending emergency physicians. MethodsThis was a retrospective cohort study of adult asthma ED discharges for acute asthma exacerbation across 5 urban academic hospitals. We used multivariable logistic regression to evaluate predictors of ICS prescription after adjusting for patient characteristics and hospital-level clustering. ResultsAmong 3948 adult ED visits, an ICS was prescribed in 6% (n = 238) of visits. Only 14% (n = 552) completed an outpatient visit within 30 days. Among patients with 2 or more ED visits in 12 months, the ICS prescription rate was 6.7%. ICS administration in the ED (odds ratio [OR] 9.91; 95% CI 7.99–12.28) and prescribing a β-agonist on discharge (OR 2.67; 95% CI 2.08–3.44) were associated with higher odds of ICS prescription. Decreased odds of ICS prescription were associated with Hispanic ethnicity (OR 0.71; 95% CI 0.51–0.99) relative to Black race, and private (OR 0.75; 95% CI 0.62–0.91) or no insurance (OR 0.54; 95% CI 0.35–0.84) relative to Medicaid. One-third (36%, n = 66) of ED attendings prescribed 0 ICS prescriptions during the study period. ConclusionsAn ICS is infrequently prescribed on ED asthma discharge, and most patients do not have an outpatient follow-up within 30 days. Future studies should examine the extent to which ED ICS prescriptions improve outcomes for patients with barriers to accessing primary care.

Recent trends in the prescription of opioids in the emergency department in patients with urolithiasis.

Pain management is central in the treatment of urolithiasis. We aimed to estimate the impact of the 2017 Department of Health and Human Services declaration of an opioid crisis on prescribing patterns of opioids and NSAIDs in emergency department visits for urolithiasis. The National Health Ambulatory Medical Care Survey (NHAMCS) was queried for emergency department visits of adults with a diagnosis of urolithiasis. The association between urolithiasis and narcotic and NSAIDs prescription patterns was evaluated and compared at pre-declaration (2014-2016) to post-declaration (2017-2018) periods. Opioids were prescribed in about 211 million (41.1%) out of 513 million emergency department visits, over a 5-year period. Diagnosis of urolithiasis accounted for 1.9% of the visits (6.0 million). The use of opioids was higher in urolithiasis (82.7%) compared to non-urolithiasis diagnosis (40.3%), as well as the use of multiple opioids per visit (p < 0.01 for all). There was an overall decrease in opioid prescriptions in the post-declaration period, -4.3% for urolithiasis (p = 0.254) and -5.6% for non-urolithiasis visits (p < 0.05). A decrease in the use of hydromorphone (-47.5%. p < 0.001), an increase in the use of morphine (+ 59.7% p = 0.006), and an increase of 'other' opioids (+ 98.8%, p < 0.041), were observed. Opioids combined with NSAIDs comprised 72.6% of the opioid prescriptions and 62.3% of all analgesic prescriptions in visits with urolithiasis diagnosis. The use of opioids when managing urolithiasis decreased 4.3% after the crisis declaration; however, statistically are not different from pre-declaration numbers. Most often, opioids were prescribed with NSAIDs in urolithiasis patients.

The Determining Effective Testing in Emergency Departments and Care Coordination on Treatment Outcomes (DETECT) for Hepatitis C (Hep C) Linkage-to-Care Trial: rationale and design of an emergency department-based randomized clinical trial of linkage-to-care strategies for hepatitis C

BackgroundHepatitis C (HCV) poses a major public health problem in the USA. While early identification is a critical priority, subsequent linkage to a treatment specialist is a crucial step that bridges diagnosed patients to treatment, cure, and prevention of ongoing transmission. Emergency departments (EDs) serve as an important clinical setting for HCV screening, although optimal methods of linkage-to-care for HCV-diagnosed individuals remain unknown. In this article, we describe the rationale and design of The Determining Effective Testing in Emergency Departments and Care Coordination on Treatment Outcomes (DETECT) for Hepatitis C (Hep C) Linkage-to-Care Trial.MethodsThe DETECT Hep C Linkage-to-Care Trial will be a single-center prospective comparative effectiveness randomized two-arm parallel-group superiority trial to test the effectiveness of linkage navigation and clinician referral among ED patients identified with untreated HCV with a primary hypothesis that linkage navigation plus clinician referral is superior to clinician referral alone when using treatment initiation as the primary outcome. Participants will be enrolled in the ED at Denver Health Medical Center (Denver, CO), an urban, safety-net hospital with approximately 75,000 annual adult ED visits. This trial was designed to enroll a maximum of 280 HCV RNA-positive participants with one planned interim analysis based on methods by O’Brien and Fleming. This trial will further inform the evaluation of cost effectiveness, disparities, and social determinants of health in linkage-to-care, treatment, and disease progression.DiscussionWhen complete, the DETECT Hep C Linkage-to-Care Trial will significantly inform how best to perform linkage-to-care among ED patients identified with HCV.Trial registrationClinicalTrials.govID: NCT04026867Original date: July 1, 2019URL: https://clinicaltrials.gov/ct2/show/NCT04026867

TRENDS IN FALL-RELATED EMERGENCY DEPARTMENT VISITS INVOLVING ALCOHOL AMONG OLDER ADULTS: 2011–2020

Abstract Falls disproportionately affect older adults (≥65) resulting in three million emergency department (ED) visits annually. The relationship between alcohol and falls is unclear, but side effects of alcohol consumption include gait and balance impairments, which are risk factors for falls. This study examined trends of older adult fall-related ED visits involving alcohol from 2011-2020. Alcohol data are not routinely collected during ED visits. Alcohol involvement was identified from National Electronic Injury Surveillance System-All Injury Program free-text narratives using natural language processing and text analytic techniques. Joinpoint regression was used and cross-validated with SAS to determine significant older adult fall changes from 2011-2020 by sex and to compare older adult trends to adults &amp;lt; 65 (20-34, 35-54, 55-64). From 2011-2020, 2.2% of all ED visits for older adult falls involved alcohol. Alcohol-involved fall ED visit rates for older adults increased annually by 7.2% (95%CI:6.1%-8.4%). These older adult ED visit rates increased by 6.8% (95%CI:5.4%-8.2%) for males and 7.4% (95%CI:6.0%-8.9%) for females annually. For adults aged 20-34 and 35-54, alcohol-involved fall ED visit rates increased annually by 1.3% (95%CI:0.1%-2.6%) and 3.8% (95%CI:2.7%-5.0%), respectively, until 2017 and then decreased by 4.4% (95%CI:1.2%-7.5%) and 4.0% (95%CI:0.3%-7.5%). For adults aged 55-64, ED visit rates increased annually by 8.5% (95%CI:6.8%-10.2%) until 2018 and then stabilized. Documenting alcohol use when treating falls is important for monitoring trends. Assessing alcohol use in conjunction with assessments for other fall risk factors can inform healthcare providers on effective strategies to recommend to reduce fall risk.

The association between vacant housing demolition and safety and health in Baltimore, MD

We measured the association between vacant housing demolitions and changes in crime and emergency department (ED) visits in Baltimore, MD. We included 646 block groups in Baltimore, 224 of which experienced at least one demolition from 2012 to 2019. The exposure was the number of demolitions completed in a block group during the previous quarter. Crime (all, property, and violent) and ED visits (all, adults, children, and for specific causes) were examined as the change in the rate per 1000 people from the previous quarter to the current quarter and analyzed using multivariable mixed effects regression models. Demolitions were associated with a small decrease in total ED visits (difference = −0.068 per 1000 people from the previous quarter to the current quarter, 95% CI -0.119, −0.018) but no significant change in crime. For each demolition, the rate of total child ED visits was 0.452 lower compared to the previous quarter (95% CI -0.777, −0.127). Demolitions were associated with small decreases in adult injury-related ED visits in the short term.

Social Risk Factor Documentation in Emergency Departments

Social Z codes are International Classification of Diseases, Tenth Revision, Clinical Modification codes that provide one way of documenting social risk factors in electronic health records. Despite the utility and availability of these codes, no study has examined social Z code documentation prevalence in emergency department (ED) settings. In this descriptive, cross-sectional study of all ED visits included in the 2018 Nationwide Emergency Department Sample, we estimated the prevalence of social Z code documentation and used logistic regression to examine the association between documentation and patient and hospital characteristics. Of more than 35.8 million adult and pediatric ED visits, there was a 1.21% weighted prevalence (n=452,499) of at least 1 documented social Z code. Social Z codes were significantly more likely to be documented in ED visits among patients aged 35 to 64 compared to patients aged 18 to 34 (18.6/1000 [16.9 to 20.4] versus 12.7/1000 [11.5 to 14.0], odds ratio (OR) 1.47 [1.42 to 1.53]), male patients (16.6/1000 [15.1 to 18.2] versus female 8.5/1000 [7.8 to 9.2], OR 1.97 [1.89 to 2.06]), patients with Medicaid compared to patients with private insurance (15.9/1000 [14.4 to 17.6] versus (6.6/1000 [6.0 to 7.2], OR 2.45 [1.30 to 1.63]), and patients who had a Charlson Comorbidity Index≥1 compared to those with a Charlson Comorbidity Index of 0 (ranges 15.0 to 16.6/1000 versus 10.6/1000 [9.6 to 11.7], ORs ranging 1.43 to 1.58). ED visits with a primary diagnosis of mental, behavioral, and neurodevelopmental illness had the strongest positive association with social Z code documentation (85.6/1000 [78.4 to 93.4], OR 10.75 [9.88 to 11.70]) compared to ED visits without this primary diagnosis. We found a very low prevalence of social Z code documentation in ED visits nationwide. More systematic social Z code documentation could support targeted social interventions, social risk payment adjustments, and future policy reforms.

Examining racial and ethnic disparities in adult emergency department patient visits for concussion in the United States.

BackgroundRacial and ethnic differences in emergency department (ED) visits have been reported among adolescent patients but are unsubstantiated among adults. Therefore, our purpose in this study was to examine the relationship between race/ethnicity and adult ED visits for concussions, their injury mechanisms, and computed tomography (CT) scan use among a nationally representative sample.MethodsWe used the National Hospital Ambulatory Medical Care Survey database from 2010–2015 to examine 63,725 adult (20–45 years old) patient visits, representing an estimated 310.6 million visits presented to EDs. Of these visits, 884 (4.5 million national estimate) were diagnosed with a concussion. Visit records detailed patient information (age, sex, race/ethnicity, geographic region, primary payment type), ED visit diagnoses, injury mechanism (sport, motor vehicle, fall, struck by or against, “other”), and head CT scan use. The primary independent variable was race/ethnicity (non-Hispanic Asian, non-Hispanic Black or African American, Hispanic/Latinx, non-Hispanic multiracial or another, and non-Hispanic White). We used multivariable logistic and multinomial regression models with complex survey sampling design weighting to examine the relationship between concussion ED visits, injury mechanisms, and CT scan use separately by race/ethnicity while accounting for covariates.ResultsThere were no associations between race/ethnicity and concussion diagnosis among adult ED visits after accounting for covariates. Relative to sports-related injuries, non-Hispanic Black or African American patient visits were associated with a motor vehicle (OR = 2.69, 95% CI: 1.06–6.86) and “other” injury mechanism (OR = 4.58, 95% CI: 1.34–15.69) compared to non-Hispanic White patients. Relative to sports-related injuries, non-Hispanic Asian, multiracial, or patients of another race had decreased odds of falls (OR = 0.20, 95% CI: 0.04–0.91) and “other” injuries (OR = 0.09, 95% CI: 0.01–0.55) compared to non-Hispanic White patients. The odds of a CT scan being performed were significantly lower among Hispanic/Latinx patient visits relative to non-Hispanic White patients (OR = 0.52, 95% CI: 0.30–0.91), while no other race/ethnicity comparisons differed.ConclusionOur findings indicate that the overarching concussion ED visit likelihood may not differ by race/ethnicity in adults, but the underlying mechanism causing the concussion and receiving a CT scan demonstrates considerable differences. Prospective future research is warranted to comprehensively understand and intervene in the complex, multi-level race/ethnicity relationships related to concussion health care to ensure equitable patient treatment.

Cost variation and revisit rate for adult patients with asthma presenting to the emergency department

BackgroundAsthma is common, resulting in 53 million emergency department (ED) visits annually. Little is known about variation in cost and quality of ED asthma care. Study objectiveWe sought to describe variation in costs and 7-day ED revisit rates for asthma care across EDs. Our primary objective was to test for an association between ED costs and the likelihood of a 7-day revisit for another asthma exacerbation. MethodsWe used the 2014 Florida State Emergency Department Database to perform an observational study of ED visits by patients ≥18 years old with a primary diagnosis of asthma that were discharged home. We compared patient and hospital characteristics of index ED discharges with and without 7-day revisits, then tested the association between ED revisits and index ED costs. Multilevel regression was performed to account for hospital-level clustering. ResultsIn 2014, there were 54,060 adult ED visits for asthma resulting in discharge, and 1667 (3%) were associated with an asthma-related ED revisit within 7 days. Median cost for an episode of ED asthma care was $597 with an interquartile range of $371–980. After adjusting for both patient and hospital characteristics, lack of insurance was associated with higher odds of revisit (OR 1.42, 95% CI 1.18–1.71), while private insurance, female gender, and older age were associated with lower odds of revisit. Hospital costs were not associated with ED revisits (OR = 1.00; 95% CI 1.00–1.00). ConclusionHospital costs associated with ED asthma visits vary but are not associated with odds of ED revisit.