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BackgroundNon-interventional large-scale research on real-world patients who had a stroke requires the use of multiple data sources ensuring access to longitudinal data from large populations with clinically-detailed information. We sought to establish a framework for longitudinal research on patients hospitalised with stroke by linking information-rich, deidentified inpatient data from the Paul Coverdell National Acute Stroke Program (PCNASP) to commercial and Medicare Advantage longitudinal claims data.MethodsAll stroke admissions in PCNASP between 2008 and 2015 were evaluated for linkage to longitudinal claims from a commercial insurer using an algorithm based on six available common data fields (patient age, gender, admission date, discharge date, discharge diagnosis and state) and a hospital match. We evaluated the linkage quality (via the percentage of unique records in the linked dataset) and the representativeness of the linked population. We also described medical history, stroke severity and patterns of medication use among the PCNASP-claims linked cohort.ResultsThe linkage produced uniqueness equal to 99.1%. We identified 5644 linked and 98 896 unlinked patients who had an ischaemic stroke hospitalisation in claims data. Linked patients were younger than unlinked (69.7 vs 72.5 years), but otherwise similar by medical history, prestroke medication use or lab values. Stroke severity was mild and most patients were discharged home. Prestroke and discharge use of antihypertensive and statins in the PCNASP were greater than their use as measured by filled prescriptions in claims.ConclusionsHigh-quality linkage between the PCNASP and commercial claims data is feasible. This linkage identified differences between reported or recommended versus actual out-of-hospital medication utilisation, highlighting the importance of longitudinal data availability for research aimed to improve the care of patients who had a stroke.

Background: Presentation with mild symptoms is a common reason for intravenous thrombolysis (IVT) nonuse among acute ischemic stroke (AIS) patients. We examined the impact of IVT on the outcomes of mild AIS over time. Methods: Using the Paul Coverdell National Stroke Program data, we examined trends in IVT utilization from 2010 to 2019 among AIS patients presenting with National Institutes of Health Stroke Scale (NIHSS) scores ≤5. Outcomes adjudicated included rates of discharge to home and ability to ambulate independently at discharge. We used generalized estimating equation models to examine the effect of IVT on outcomes of AIS patients presenting with mild symptoms and calculated adjusted odds ratio (AOR) with 95% confidence intervals (CI). Results: During the study period, 346,762 patients presented with mild AIS symptoms. Approximately 6.2% were treated with IVT. IVT utilization trends increased from 3.7% in 2010 to 7.7% in 2019 (p < 0.001). Patients treated with IVT had higher median NIHSS scores upon presentation (IVT 3 [2, 4] vs. no IVT 2 [0, 3]). Rates of discharge to home (AOR 2.06, 95% CI: 1.99–2.13) and ability to ambulate at time of discharge (AOR 1.82, 95% CI: 1.76–1.89) were higher among those treated with IVT. Conclusion: There was an increased trend in IVT utilization among AIS patients presenting with mild symptoms. Utilization of IVT increased the odds of being discharged to home and the ability to ambulate at discharge independently in patients with mild stroke.

OBJECTIVE: Emergency medical service (EMS) transportation after acute stroke is associated with shorter symptom-to-arrival times and more rapid medical attention when compared to patient transportation by private vehicle. METHODS: We analyzed data from the Paul Coverdell National Acute Stroke Program from 2014 to 2019 among stroke (ischemic and hemorrhagic) and transient ischemic attack (TIA) patients to examine patterns in EMS utilization. RESULTS: Of 500,829 stroke and TIA patients (mean age 70.9 years, 51.3% women) from 682 participating hospitals during the study period, 60% arrived by EMS. Patients aged 18–64 years vs. ≥65 years (AOR 0.67) were less likely to utilize EMS. Severe stroke patients (AOR 2.29, 95%CI, 2.15–2.44) and hemorrhagic stroke patients vs. ischemic stroke patients (AOR 1.47, 95% CI, 1.43–1.51) were more likely to utilize EMS. Medicare (AOR 1.35, 95% CI, 1.32–1.38) and Medicaid (AOR 1.41, 95% CI, 1.37–1.45) beneficiaries were more likely than privately insured patients to utilize EMS, but no difference was found between no insurance/self-pay patients and privately insured patients on EMS utilization. Overall, there was a decreasing trend in the utilization of EMS (59.6% to 59.3%, p=0.037). The decreasing trend was identified among ischemic stroke (p

As the science surrounding population sodium reduction evolves, monitoring and evaluating new studies on intake and health can help increase our understanding of the associated benefits and risks. Here we describe a systematic review of recent studies on sodium intake and health, examine the risk of bias (ROB) of selected studies, and provide direction for future research. Seven online databases were searched monthly from January 2015 to December 2019. We selected human studies that met specified population, intervention, comparison, outcome, time, setting/study design (PICOTS) criteria and abstracted attributes related to the study population, design, intervention, exposure, and outcomes, and evaluated ROB for the subset of studies on sodium intake and cardiovascular disease risks or indicators. Of 41,601 abstracts reviewed, 231 studies were identified that met the PICOTS criteria and ROB was assessed for 54 studies. One hundred and fifty-seven (68%) studies were observational and 161 (70%) focused on the general population. Five types of sodium interventions and a variety of urinary and dietary measurement methods were used to establish and quantify sodium intake. Five observational studies used multiple 24-h urine collections to assess sodium intake. Evidence mainly focused on cardiovascular-related indicators (48%) but encompassed an assortment of outcomes. Studies varied in ROB domains and 87% of studies evaluated were missing information on ≥1 domains. Two or more studies on each of 12 outcomes (e.g., cognition) not previously included in systematic reviews and 9 new studies at low ROB suggest the need for ongoing or updated systematic reviews of evidence on sodium intake and health. Summarizing evidence from assessments on sodium and health outcomes was limited by the various methods used to measure sodium intake and outcomes, as well as lack of details related to study design and conduct. In line with research recommendations identified by the National Academies of Science, future research is needed to identify and standardize methods for measuring sodium intake.

BackgroundRates of intra-arterial revascularization treatments (IAT) for acute ischemic stroke (AIS) are increasing in the USA. Using a multi-state stroke registry, we studied the trend in IAT use among patients with AIS over a period spanning 11 years. We examined the impact of IAT rates on hospital procedure volumes and patient outcome after stroke.MethodsWe used data from the Paul Coverdell National Acute Stroke Program (PCNASP) and explored trends in IAT between 2008 and 2018. Patient outcomes were examined by rates of IAT procedures across hospitals. Specifically, outcomes were compared across low-volume (30 IAT per year). Favorable outcome was defined as discharge to home.ResultsThere were 612 958 patients admitted with AIS to 687 participating hospitals within the PCNASP during this study. Only 2.9% of patients (mean age 68.5 years, 49.3% women) received IAT. The percent of patients with AIS receiving IAT increased from 1% in 2008 to 5.3% in 2018 (pConclusionHigh-volume hospitals were associated with a higher rate of favorable outcome. With the increased use of IAT among patients with AIS, the proportion of low-volume hospitals performing IAT significantly decreased.

BackgroundThe intra-arterial treatment (IAT) of acute ischemic stroke (AIS) is now evidence-based and given the highest level of recommendation among eligible patients. Using a multi-state stroke registry, we studied the trend in IAT among patients with AIS over 11 years and its impact on the utilization of intravenous thrombolysis (IVT) within the same 11 years.MethodsUsing data from the Paul Coverdell National Acute Stroke Program (PCNASP), we studied trends in IVT and IAT for patients with AIS between 2008 and 2018. Trends over time were examined for rates of IVT only, IAT only, or a combination of IVT and IAT (IVT+IAT). Favorable outcome was defined as discharge to home.ResultsDuring the study period there were 595 677 patients (mean age 70.4 years, 50.4% women) from 646 participating hospitals with a clinical diagnosis of AIS in the PCNASP. Trends for IVT only, IAT only, and IVT+IAT all significantly increased over time (PConclusionIn our large registry-based analysis, we observed a significant increase in the use of IAT for the treatment of AIS, with continued increases in the use of IVT. Concurrently, the percent of patients with favorable outcomes continued to increase.

Background and Purpose— International Classification of Diseases, Ninth and Tenth Revision, Clinical Modification ( ICD-9-CM and ICD-10-CM ) codes are often used for disease surveillance. We examined changes in concordance between ICD-CM codes and clinical diagnoses before and after the transition to ICD-10-CM in the United States (October 1, 2015), and determined if there were systematic variations in concordance by patient and hospital characteristics. Methods— We included Paul Coverdell National Acute Stroke Program patient discharges from 2014 to 2017. Concordance between ICD-CM codes and the clinical diagnosis documented by the physician (assumed as accurate) was calculated for each diagnosis category: ischemic stroke, transient ischemic attack, subarachnoid hemorrhage, and intracerebral hemorrhage. Results— In total, 314 857 patient records were included in the analysis (n=280 hospitals), 55.9% of which were obtained after the transition to ICD-10-CM . While concordance was generally high, a small, and temporary decline occurred from the last calendar quarter of ICD-9-CM (average unadjusted concordance =92.8%) to the first quarter of ICD-10-CM use (91.0%). Concordance differed by diagnosis category and was generally highest for ischemic stroke. In the analysis of ICD-10-CM records, disagreements often occurred between ischemic stroke and transient ischemic attack records and between subarachnoid and intracerebral hemorrhage records. Compared with the smallest hospitals (≤200 beds), larger hospitals had significantly higher odds of concordance (ischemic stroke adjusted odds ratio for ≥400 beds, 1.7; 95% CI, 1.5–1.9). Conclusions— This study identified a small and transient decline in concordance between ICD-CM codes and stroke clinical diagnoses during the coding transition, indicating no substantial impact on the overall identification of stroke patients. Researchers and policymakers should remain aware of potential changes in ICD-CM code accuracy over time, which may affect disease surveillance. Systematic variations in the accuracy of codes by hospital and patient characteristics have implications for quality-of-care studies and hospital comparative assessments.

Introduction Little information is available about racial/ethnic and geographic variations in long-term survival among older patients (≥65) after acute ischemic stroke (AIS). Methods We examined data on 1,019,267 Medicare fee-for-service (FFS) beneficiaries aged 66 or older, hospitalized with a primary diagnosis of AIS from 2008 through 2012. Survival was defined as the time from the date of AIS to date of death, or an end of follow-up date of December 31, 2017. We used Cox proportional hazard models to estimate 5-year survival after AIS, adjusted for age, sex, race and Hispanic ethnicity, poverty level, Charlson Comorbidity Index, and state. Results Among 1,019,267 Medicare FFS beneficiaries hospitalized with AIS from 2008 through 2012, we documented 701,718 deaths (68.8%) during a median of 4 years of follow-up with 4.08 million person-years. The overall adjusted 5-year survival was 44%. Non-Hispanic Black men had the lowest 5-year survival, and 5-year survival varied significantly by state, from the highest at 49.1% (North Dakota) to the lowest at 40.5% (Hawaii). The ranges between the highest and lowest 5-year survival rates across states also varied significantly by racial/ethnic groups, with percentage point differences of 9.6 among non-Hispanic White, 11.3 among non-Hispanic Black, 17.7 among Hispanic, and 28.5 among other racial/ethnic beneficiaries. Conclusion We identified significant racial/ethnic and geographic variations in 5-year survival rates after AIS among 2008-2012 Medicare FFS beneficiaries. Further study is needed to understand the reasons for these variations and develop prevention strategies to improve survival and racial disparities in survival after AIS.

Background Amid recently rising heart failure (HF) death rates in the United States, we describe county‐level trends in HF mortality from 1999 to 2018 by racial/ethnic group and sex for ages 35 to 64 years and 65 years and older. Methods and Results Applying a hierarchical Bayesian model to National Vital Statistics data representing all US deaths, ages 35 years and older, we estimated annual age‐standardized county‐level HF death rates and percent change by age group, racial/ethnic group, and sex from 1999 through 2018. During 1999 to 2011, ~30% of counties experienced increasing HF death rates among adults ages 35 to 64 years. However, during 2011 to 2018, 86.9% (95% CI, 85.2–88.2) of counties experienced increasing mortality. Likewise, for ages 65 years and older, during 1999 to 2005 and 2005 to 2011, 27.8% (95% CI, 25.8–29.8) and 12.6% (95% CI, 11.2–13.9) of counties, respectively, experienced increasing mortality. However, during 2011 to 2018, most counties (67.4% [95% CI, 65.4–69.5]) experienced increasing mortality. These temporal patterns by age group held across racial/ethnic group and sex. Conclusions These results provide local context to previously documented recent national increases in HF death rates. Although county‐level declines were most common before 2011, some counties and demographic groups experienced increasing HF death rates during this period of national declines. However, recent county‐level increases were pervasive, occurring across counties, racial/ethnic group, and sex, particularly among ages 35 to 64 years. These spatiotemporal patterns highlight the need to identify and address underlying clinical risk factors and social determinants of health contributing to these increasing trends.

Background Recent studies reported increasing trends in hospitalization of stroke patients aged 35–64 years. Aim To examine changes in risk factor profiles among patients aged 35–64 years hospitalized with acute ischemic stroke between 2006 and 2017 in the United States. Methods We used data from the National Inpatient Sample of the Healthcare Cost and Utilization Project from 2006 through 2017. Principal ICD-9-CM/ICD-10-CM codes were used to identify acute ischemic stroke hospitalizations, and secondary codes were used to identify the presence of four major stroke risk factors: hypertension, diabetes, lipid disorders, and tobacco use. We used the relative percent change to assess the changes in the prevalence of risk profile between 2006–2007 and 2016–2017 and linear regression models to obtain the p values for the overall trends across six time periods. Results Approximately 1.5 million acute ischemic stroke hospitalizations occurred during 2006–2017. The prevalence of having all four risk factors increased from 4.1% in 2006–2007 to 9.1% in 2016–2017 (relative percent change 122.0%, p Conclusions The prevalence of hospitalized acute ischemic stroke patients aged 35–64 years with all four or any three of four major stroke risk factors increased by 122% and 38%, while those with only one risk factor or no risk factor has declined by 28% and 39%, respectively, from 2006 to 2017. Younger adults are increasingly at higher risk for stroke from preventable and treatable risk factors. This growing public health problem will require clinicians, healthcare systems, and public health efforts to implement more effective prevention strategies among this population.

Background Stroke continues to be a leading cause of death and disability in the United States. Rates of intra-arterial reperfusion treatments (IAT) for acute ischemic stroke (AIS) are increasing, and these treatments are associated with more favorable outcomes. We sought to examine the effect of insurance status on outcomes for AIS patients receiving IAT within a multistate stroke registry. Methods We used data from the Paul Coverdell National Acute Stroke Program (PCNASP) from 2014 to 2019 to quantify rates of IAT (with or without intravenous thrombolysis) after AIS. We modeled outcomes based on insurance status: private, Medicare, Medicaid, or no insurance. Outcomes were defined as rates of discharge to home, in-hospital death, symptomatic intracranial hemorrhage (sICH), or life-threatening hemorrhage during hospitalization. Results During the study period, there were 486,180 patients with a clinical diagnosis of AIS (mean age 70.6 years, 50.3% male) from 674 participating hospitals in PCNASP. Only 4.3% of patients received any IAT. As compared to private insurance, uninsured patients receiving any IAT were more likely to experience in-hospital death (AOR 1.36 [95% CI 1.07–1.73]). Medicare (AOR 0.78 [95% CI 0.71–0.85]) and Medicaid (AOR 0.85 [95% CI 0.75–0.96]) beneficiaries were less likely but uninsured patients were more likely (AOR 1.90 [95% CI 1.61–2.24]) to be discharged home. Insurance status was not found to be independently associated with rates of sICH. Conclusions Insurance status was independently associated with in-hospital death and discharge to home among AIS patients undergoing IAT.

Background The U.S. Preventive Services Task Force recommends the use of 24-hour ambulatory blood pressure monitoring (ABPM) as part of screening and diagnosis of hypertension. The optimal ABPM device for population-based surveys is unknown. Methods We compared the proportion of valid blood pressure (BP) readings, mean awake and asleep BP readings, differences between awake ABPM readings and initial standardized BP readings, and sleep experience among three ABPM devices. We randomized a convenience sample of 365 adults to 1 of 3 ABPM devices: Welch Allyn Mobil-O-Graph (WA), Sun Tech Classic Oscar2 (STO) and Spacelabs 90227 (SL). Participants completed sleep quality questionnaires on the nights before and during ABPM testing. Results The proportions of valid BP readings were not different among the 3 devices (P > 0.45). Mean awake and asleep systolic BP were significantly higher for STO device (WA vs. STO vs. SL: 126.65, 138.09, 127.44 mm Hg; 114.34, 120.34, 113.13 mm Hg; P < 0.0001 for both). The difference between the initial average standardized mercury systolic BP readings and the ABPM mean awake systolic BP was larger for STO device (WA vs. STO. vs. SL: –5.26, –16.24, –5.36 mm Hg; P < 0.0001); diastolic BP mean differences were ~ –6 mm Hg for all 3 devices (P = 0.6). Approximately 55% of participants reported that the devices interfered with sleep; however, there were no sleep differences across the devices (P > 0.4 for all). Conclusion Most of the participants met the threshold of 70% valid readings over 24 hours. Sleep disturbance was common but did not interfere with completion of measurement in most of the participants.

Introduction: Previous studies reported increasing trends in stroke hospitalizations among adults 35-64 years. Methods: We used data from the National Inpatient Sample to identify stroke hospitalizations (principal ICD-9-CM/ICD-10-CM codes) among adults aged 35-64 years from 2007 through 2016. Four major risk factors (RFs) (hypertension, diabetes, lipid disorder, and tobacco use) were identified using secondary codes for each hospitalization. We used relative percent change (RPC) to assess the changes in prevalence between 2007-08 and 2015-16. Orthogonal polynomial coefficients were calculated by the method of Fisher and Yates for linear trend testing. Results: Approximately 2.4 million stroke hospitalizations occurred during 2007-2016. The prevalence of having all 4 RFs among stroke hospitalizations nearly doubled, from 3.6% in 2007-08 to 7.0% in 2015-16 (p Conclusions: Our findings have important implications for younger adults. Regardless of stroke etiology, younger adults are increasingly at higher risk for stroke from preventable and treatable traditional RFs. This growing public health problem will require clinicians, healthcare systems, and public health efforts to implement more effective prevention strategies to address the rising prevalence of multiple co-existing RFs among this population.

Background The prevalence of moderate or complex (moderate-complex) congenital heart defects (CHDs) among adults is increasing due to improved survival, but many patients experience lapses in specialty care or their CHDs are undocumented in the medical system. There is, to date, no efficient approach to identify this population. Objective To develop and assess the performance of a risk score to identify adults aged 20-60 years with undocumented specific moderate-complex CHDs from electronic health records (EHR). Methods We used a case-control study (596 adults with specific moderate-complex CHDs and 2384 controls). We extracted age, race/ethnicity, electrocardiogram (EKG), and blood tests from routine outpatient visits (1/2009 through 12/2012). We used multivariable logistic regression models and a split-sample (4: 1 ratio) approach to develop and internally validate the risk score, respectively. We generated receiver operating characteristic (ROC) c-statistics and Brier scores to assess the ability of models to predict the presence of specific moderate-complex CHDs. Results Out of six models, the non-blood biomarker model that included age, sex, and EKG parameters offered a high ROC c-statistic of 0.96 [95% confidence interval: 0.95, 0.97] and low Brier score (0.05) relative to the other models. The adult moderate-complex congenital heart defect risk score demonstrated good accuracy with 96.4% sensitivity and 80.0% specificity at a threshold score of 10. Conclusions A simple risk score based on age, sex, and EKG parameters offers early proof of concept and may help accurately identify adults with specific moderate-complex CHDs from routine EHR systems who may benefit from specialty care.

Adherence to prescribed medications is associated with improved clinical outcomes for chronic disease management and reduced mortality from chronic conditions (1). Conversely, nonadherence is associated with higher rates of hospital admissions, suboptimal health outcomes, increased morbidity and mortality, and increased health care costs (2). In the United States, 3.8 billion prescriptions are written annually (3). Approximately one in five new prescriptions are never filled, and among those filled, approximately 50% are taken incorrectly, particularly with regard to timing, dosage, frequency, and duration (4). Whereas rates of nonadherence across the United States have remained relatively stable, direct health care costs associated with nonadherence have grown to approximately $100-$300 billion of U.S. health care dollars spent annually (5,6). Improving medication adherence is a public health priority and could reduce the economic and health burdens of many diseases and chronic conditions (7).

Introduction The prominent decline in U.S. stroke death rates observed for more than 4 decades has slowed in recent years. CDC examined trends and patterns in recent stroke death rates among U.S. adults aged ≥35 years by age, sex, race/ethnicity, state, and census region. Methods Trends in the rates of stroke as the underlying cause of death during 2000–2015 were analyzed using data from the National Vital Statistics System. Joinpoint software was used to identify trends in stroke death rates, and the excess number of stroke deaths resulting from unfavorable changes in trends was estimated. Results Among adults aged ≥35 years, age-standardized stroke death rates declined 38%, from 118.4 per 100,000 persons in 2000 to 73.3 per 100,000 persons in 2015. The annual percent change (APC) in stroke death rates changed from 2000 to 2015, from a 3.4% decrease per year during 2000–2003, to a 6.6% decrease per year during 2003–2006, a 3.1% decrease per year during 2006–2013, and a 2.5% (nonsignificant) increase per year during 2013–2015. The last trend segment indicated a reversal from a decrease to a statistically significant increase among Hispanics (APC = 5.8%) and among persons in the South Census Region (APC = 4.2%). Declines in stroke death rates failed to continue in 38 states, and during 2013–2015, an estimated 32,593 excess stroke deaths might not have occurred if the previous rate of decline could have been sustained. Conclusions and Implications for Public Health Practice Prior declines in stroke death rates have not continued in recent years, and substantial variations exist in timing and magnitude of change by demographic and geographic characteristics. These findings suggest the importance of strategically identifying opportunities for prevention and intervening in vulnerable populations, especially because effective and underused interventions to prevent stroke incidence and death are known to exist.

BackgroundIntravenous recombinant tissue plasminogen activator (IV rtPA) is recommended treatment for patients with acute ischaemic stroke, but the cost-effectiveness of IV rtPA within different time windows after the onset of acute ischaemic stroke is not well reviewed.AimsTo conduct a literature review of the cost-effectiveness studies about IV rtPA by treatment times.Summary of reviewA literature search was conducted using MEDLINE, EMBASE, CINAHL and Cochrane Library, with the keywords acute ischemic stroke, tissue plasminogen activator, cost, economic benefit, saving and incremental cost-effectiveness analysis. The review is limited to original research articles published during 1995–2016 in English-language peer-reviewed journals. We found 16 studies meeting our criteria for this review. Nine of them were cost-effectiveness studies of IV rtPA treatment within 0–3 hours after stroke onset, 2 studies within 3–4.5 hours, 3 studies within 0–4.5 hours and 2 studies within 0–6 hours. IV rtPA is a cost-saving or a cost-effectiveness strategy from most of the study results. Only one study showed incremental cost-effectiveness ratio of IV rtPA within 1 year was marginally above US$50 000 per quality-adjusted life year threshold. IV rtPA within 0–3 hours after stroke led to cost savings for lifetime or 30 years and IV rtPA within 3–4.5 hours after stroke increased costs but still was cost-effective.ConclusionsThe literature generally showed that IV rtPA was a dominant or a cost-effective strategy compared with traditional treatment for patients with acute ischaemic stroke without IV rtPA. The findings from the literature lacked generalisability because of limited data and various assumptions.

Introduction Studies have demonstrated that intravenous recombinant tissue plasminogen activator (IV rtPA) is a cost-effective treatment for acute ischemic stroke. Age-specific cost effectiveness has not been well examined. This study estimated age-specific incremental cost-effectiveness ratios (ICERs) of IV rtPA treatment versus no IV rtPA. Methods A Markov model was developed to examine the economic impact of IV rtPA over a 20-year time horizon on four age groups (18–44, 45–64, 65–80, and ≥81 years) from the U.S. healthcare sector perspective. The model used health outcomes from a national stroke registry adjusted by parameters from previous literature and current hospitalization costs in 2013 U.S. dollars. Long-term annual costs and quality-adjusted life years (QALYs) in the years after a stroke were discounted at 3% per year. Incremental costs, incremental QALYs, and ICERs were estimated and sensitivity analyses were conducted between 2015 and 2017. Results Use of IV rtPA gained 0.55 QALYs and cost $3,941 more than no IV rtPA for stroke patients aged ≥18 years over a 20-year time horizon. IV rtPA was a dominant strategy compared to no IV rtPA for patients aged 18–44 and 45–64 years. For patients aged 65–80 years, IV rtPA gained 0.44 QALYs and cost $4,872 more than no IV rtPA (ICER=$11,132/QALY). For patients aged ≥81 years, ICER was estimated at $48,676/QALY. Conclusions IV rtPA saved costs and improved health outcomes for patients aged 18–64 years and was cost effective for those aged ≥65 years. These findings support the use of IV rtPA.

Introduction Little is known about trends in the overall combined burden of fatal and nonfatal cerebrovascular disease events in the United States. Our objective was to describe the combined burden by age, sex, and region from 2006 through 2014. Methods We used data on adults aged 35 and older from 2006 through 2014 Nationwide Emergency Department Sample, National Inpatient Sample of the Healthcare Cost and Utilization Project, and the National Vital Statistics System. We calculated age-standardized cerebrovascular disease event rates by using the 2010 US Census population. Trends in rates were assessed by calculating the relative percentage change (RPC) between 2006 and 2014, and by using Joinpoint to obtain P values for overall trends. Results The age-standardized rate increased significantly for total cerebrovascular disease events (primary plus comorbid events) from 1,050 per 100,000 in 2006 to 1,147 per 100,000 in 2014 (P < .05 for trend). Treat-and-release emergency department visits with comorbid cerebrovascular disease events increased significantly, from 114 per 100,000 in 2006 to 213 per 100,000 in 2014 (RPC of 87%, P < .05 for trend). Significant rate increases were identified among adults aged 35 to 64 with an RPC of 19% in primary cerebrovascular disease events, 48% in comorbid cerebrovascular disease events, and 36% in total events. Conclusion Our findings have important implications for the increasing cerebrovascular disease burden among adults aged 35 to 64. Focused prevention strategies should be implemented, especially among young adults who may be unaware of existing modifiable risk factors.

ObjectiveTo determine whether increased risk of acute ischemic stroke (AIS) following herpes zoster (HZ) might be modified by the status of zoster vaccine live (ZVL) vaccination and antiviral treatment following HZ.MethodsWe included 87,405 Medicare fee-for-service beneficiaries aged ≥66 years diagnosed with HZ and AIS from 2008 to 2017. We used a self-controlled case series design to examine the association between HZ and AIS, and estimated incidence rate ratios (IRRs) by comparing incidence of AIS in risk periods vs control periods. To examine effect modification by ZVL and antiviral treatment, beneficiaries were classified into 4 mutually exclusive groups: (1) no vaccination and no antiviral treatment; (2) vaccination only; (3) antiviral treatment only; and (4) both vaccination and antiviral treatment. We tested for interaction to examine changes in IRRs across 4 groups.ResultsAmong 87,405 beneficiaries with HZ and AIS, 22.0%, 2.0%, 70.1%, and 5.8% were in groups 1 to 4, respectively. IRRs in 0–14, 15–30, 31–90, and 91–180 days following HZ were 1.89 (95% confidence interval [CI], 1.77–2.02), 1.58 (95% CI, 1.47–1.69), 1.36 (95% CI, 1.31–1.42), and 1.19 (95% CI, 1.15–1.23), respectively. There was no evidence of effect modification by ZVL and antiviral treatment on AIS (p = 0.067 for interaction). The pattern of association between HZ and risk for AIS was largely consistent across age group, sex, and race.ConclusionsRisk of AIS increased significantly following HZ, and this increased risk was not modified by ZVL and antiviral treatment. Our findings suggest the importance of following recommended HZ vaccination in prevention of HZ and HZ-associated AIS.

Introduction: Herpes zoster (HZ) is associated with increased risk of stroke. No study has simultaneously examined the effect of HZ vaccination and antiviral treatment following HZ on risk of acute ischemic stroke (AIS). Methods: We included 35,186 Medicare fee-for-service beneficiaries ≥66 years of age diagnosed with HZ and AIS from 2007-2015. We used a self-controlled case series design to examine the association between HZ and AIS, and estimated the incident rate ratio (IRR) by comparing the incidence of AIS in risk periods (periods following HZ) vs. control periods (rest periods). To minimize confounding by age, we restricted analyses to ±365 days from the HZ index date. To examine effect modification by HZ vaccination and antiviral treatment following HZ, beneficiaries were classified into four groups: (1) no vaccination and no antiviral treatment; (2) vaccination only; (3) antiviral treatment only; and (4) both vaccination and antiviral treatment. We tested for interaction to examine the changes in IRRs across the 4-groups. Results: Among 35,186 Medicare beneficiaries with HZ and AIS, 60.9%, 11.8%, 22.2% and 5.2% were in groups 1 to 4, respectively. IRRs at 0-14, 15-30, 31-90, and 91-180 days following HZ were 1.48 (95% CI 1.37-1.59), 1.31 (1.21-1.42), 1.18 (1.12-1.24), and 1.07 (1.03-1.13), respectively. There was no evidence of effect modification by HZ vaccination and antiviral treatment on AIS (all p-values for interaction across 4-groups IRRs >0.05 with the smallest p=0.129). The pattern of association between HZ and risk for AIS was consistent across age group (66-74yrs, 75-84yrs, and ≥85yrs), sex, and race (non-Hispanic white, non-Hispanic black, Hispanic, other). Conclusions: Risk of AIS increased significantly following HZ, and this increased risk didn’t appear to be modified by HZ vaccination and antiviral treatment following HZ. Primary prevention of HZ by HZ vaccination might be the most effective approach to prevent HZ-associated AIS.

Introduction: Little is known about demographic and geographic differences in long-term survival among older patients with acute ischemic stroke (AIS). Methods: We included 923,876 Medicare fee-for-service beneficiaries ≥65 years of age diagnosed with AIS from 2007 to 2010. The overall survival was defined as time from date of AIS to date of death, or through last follow-up date of 12/31/2015. We used a Cox proportional hazard model to obtain age, sex, race, and poverty level adjusted survival estimates. Results: Among 923,876 Medicare beneficiaries hospitalized with AIS in 2007-2010, we documented 606,540 deaths (65.7%) during a median of 4.2 years follow-up through 2015, representing 3.88 million person years. The overall adjusted 5-year survival was 45%; beneficiaries aged 65-74 years had 65% survival at 5-years, 46% for those 75-84 years, and 19% for those ≥85 years. Non-Hispanic blacks had significantly lower overall survival as compared to Non-Hispanic whites (adjusted 5-year survival 41% vs. 46%, p Conclusion: Significant demographic and geographic differences in 5-year survival after AIS were identified among 2007-2010 Medicare beneficiaries. Further study is needed to examine factors associated with these findings and develop prevention strategies to enhance survival.

Introduction: Limited studies examined the prevalence and impact of comorbidities on all-cause mortality longitudinally among older patients with acute ischemic stroke (AIS). Methods: We included Medicare fee-for-service beneficiaries diagnosed with AIS from 2007 to 2010 and followed up to 2015. We calculated prevalence of 12 comorbidities, including atrial fibrillation (AF), congestive heart failure (CHF), chronic kidney disease (CKD), chronic obstructive pulmonary disease (COPD), diabetes, hypertension, hyperlipidemia, ischemic heart disease (IHD), obesity, peripheral vascular disease (PVD), cancer, and depression at baseline. We used Cox proportional hazard models to examine the associations with all-cause mortality, and calculated population attributable fraction (PAF) contributing to mortality. Results: Among 306,142 Medicare beneficiaries 65-74 years of age hospitalized with AIS, we documented 139,228 deaths (45.5%) during a median 5.8 years of follow-up. Six comorbidities had a prevalence ≥15% and were associated with ≥20% increased risk of death. Prevalence and adjusted hazard ratio (AHR) were 28.5% and 1.75 for CKD, 30.9% and 1.67 for CHF, 26.9% and AHR 1.52 for COPD, 47.7% and 1.33 for diabetes, 22.1% and 1.29 for depression, and 16.1% and 1.23.for AF. Beneficiaries with ≥4 of 6 prevalent comorbidities had a 5.8 fold increased risk of death as compared to those without any comorbidities. The all-cause mortality among AIS beneficiaries would be reduced by about 50% (PAF) if all six comorbidities could be prevented. Beneficiaries with cancer, IHD, and PVD were also more likely to die as compared to those without. However, beneficiaries with hyperlipidemia (AHR 0.54), hypertension (AHR 0.81), and obesity (AHR 0.85) had a significantly lower risk of death than those without. Conclusion: We identified several common comorbidities associated with a significantly increased risk of all-cause mortality. Our findings provide useful information to better target prevention and treatment strategies to enhance overall survival.

Introduction Intravenous tissue plasminogen activator (IV tPA) is a globally recommended treatment for patients with acute ischaemic stroke. We examined IV tPA use among patients aged 18–64 years with a primary diagnosis of acute ischaemic stroke in the USA and inpatient costs per hospitalisation by IV tPA use status among these patients. Methods Using the 2010–2013 MarketScan Commercial Claims and Encounters Inpatient Data, we identified 39 149 hospitalisations with a primary diagnosis of acute ischaemic stroke. We verified those with and without IV tPA by ICD-9 procedure code 99.10. We estimated trends in IV tPA use by applying logistic regression. The average inpatient costs per acute ischaemic stroke hospitalisation were assessed for subpopulations. We examined costs per acute ischaemic stroke hospitalisation using multivariate regression models controlling for IV tPA status, age, gender, urbanisation, geographic region, Charlson comorbidity index, length of hospital stays (LOS) and discharge status. Results 2546 hospitalisations (6.5%) used IV tPA. IV tPA use increased over time (2010 vs 2013; OR 1.50). Average inpatient costs per acute ischaemic stroke hospitalisation were $20 331 ($31 369 for the IV tPA group, $19 563 for the non-tPA group). From multivariate analyses, higher costs per acute ischaemic stroke hospitalisation were associated with longer LOS, non-home discharge destination, and IV tPA use, which might be correlated with severity of stroke. Conclusions Findings suggest that IV tPA use has increased in recent years while the inpatient costs per acute ischaemic stroke hospitalisation using IV tPA are substantial. Those findings are useful in better understanding the overall economic burden of stroke, short-term cost implications of using IV tPA, and for estimating the accurate cost-effectiveness of stroke treatments.

Background: The clinical benefit of intravenous (IV) alteplase in acute ischemic stroke is time dependent. We assessed the overall temporal changes in door-to-needle (DTN) time and examine the factors associated with DTN time ≤60 and ≤45 minutes. Methods and Results: A total of 496 336 acute ischemic stroke admissions were identified in the Paul Coverdell National Acute Stroke Program from 2008 to 2017. We used generalized estimating equations models to examine the factors associated with DTN time ≤60 and ≤45 minutes, and calculated adjusted odds ratios and 95% CI. Between 2008 and 2017, the percentage of acute ischemic stroke patients who received IV alteplase including those transferred, increased from 6.4% to 15.3%. After excluding those who received IV alteplase at an outside hospital, a total of 39 737 (8%) acute ischemic stroke patients received IV alteplase within 4.5 hours of the time the patient last known to be well. Significant increases were seen in DTN time ≤60 minutes (26.4% in 2008 to 66.2% in 2017, P P Conclusions: Rapid improvements in DTN time were observed in the Paul Coverdell National Acute Stroke Program; however, opportunities to reduce disparities remain.

Introduction Despite decades-long reductions in cardiovascular disease (CVD) mortality, CVD mortality rates have recently plateaued and even increased in some subgroups, and the prevalence of CVD risk factors remains high. Million Hearts 2022, a 5-year initiative, was launched in 2017 to address this burden. This report establishes a baseline for the CVD risk factors targeted for reduction by the initiative during 2017-2021 and highlights recent changes over time. Methods Risk factor prevalence among U.S. adults was assessed using data from the National Health and Nutrition Examination Survey, National Survey on Drug Use and Health, and National Health Interview Survey. Multivariate analyses were performed to assess differences in prevalence during 2011-2012 and the most recent cycle of available data, and across subgroups. Results During 2013-2014, the prevalences of aspirin use for primary and secondary CVD prevention were 27.4% and 74.9%, respectively, and of statin use for cholesterol management was 54.5%. During 2015-2016, the average daily sodium intake was 3,535 mg/day and the prevalences of blood pressure control, combustible tobacco use, and physical inactivity were 48.5%, 22.3%, and 29.1%, respectively. Compared with 2011-2012, significant decreases occurred in the prevalences of combustible tobacco use and physical inactivity; however, a decrease also occurred for aspirin use for primary or secondary prevention. Disparities in risk factor prevalences were observed across age groups, genders, and racial/ethnic groups. Conclusions and implications for public health practice Millions of Americans have CVD risk factors that place them at increased risk for having a cardiovascular event, despite the existence of proven strategies for preventing or managing CVD risk factors. A concerted effort to implement these strategies will be needed to prevent one million acute cardiovascular events during the 5-year initiative.

Approximately 1 in 3 US adults has hypertension, but only half have their blood pressure controlled. We identified characteristics of health care practices and systems (hereinafter practices) effective in achieving control rates at or above 70% by using data collected via applications submitted from April through June 2017 for consideration in the Million Hearts Hypertension Control Challenge. We included 96 practices serving 635,000 patients with hypertension across 34 US states in the analysis. Mean hypertension control rate was 77.1%; 27.1% of practices had a control rate of 80% or greater. Although many practices served large populations with multiple risk factors for uncontrolled hypertension, high control rates were achieved with implementation of evidenced-based strategies.

To work toward the goal of building healthier lives, free of cardiovascular diseases and stroke, the American Heart Association (AHA) and American Stroke Association (ASA) have developed a multifaceted strategy for improving the quality of care for stroke. A key feature of this strategy is the development of professional guidelines for evidence-based stroke care. Recommendations are provided for acute management, primary and secondary prevention, rehabilitation, stroke systems of care, and other domains of stroke care.1–4 The strength of the evidence supporting these recommendations is given, according to a specified grading system. For many aspects of care, there is widespread consensus that the intervention is beneficial, usually supported by strong scientific evidence including randomized controlled trials. Professional guidelines improve the delivery of evidence-based care; however, despite these guidelines, gaps between best evidence-based practice and actual practice persist.5 To close these gaps in quality of care, several organizations have developed systems to allow practitioners and healthcare organizations such as hospitals to quantify the quality of their care through performance measures. A performance measure is defined by the Agency for Healthcare Research and Quality as a “mechanism for assessing the degree to which a provider competently and safely delivers the appropriate clinical services to the patient within the optimal time period.”6 The AHA and American College of Cardiology Foundation have additionally suggested that performance measures should be based on the highest level of supportive evidence and have the greatest impact on health outcomes.7 Performance measures, in addition to supporting quality improvement activities, are specifically suitable for public reporting, external comparisons, and possibly pay-for-performance programs. As steward of the professional guidelines for stroke care, with a large group of volunteer expert clinicians with expertise in guideline creation and performance measurement, the AHA/ASA is uniquely positioned to develop high-quality …

Introduction: The clinical benefit of intravenous thrombolysis (IV tPA) in acute ischemic stroke (AIS) is time dependent. Achieving a door-to-needle time (DTN) ≤60 minutes for IV tPA is a quality care measure endorsed by the National Quality Forum. Methods: A total of 433,410 AIS admissions from 520 participated hospitals were identified in the Paul Coverdell National Acute Stroke Program (PCNASP) from 2008-2016. We assessed the overall temporal changes in DTN time and examined the factors associated with DTN ≤60 minutes by performing generalized estimating equations (GEE) modeling. The adjusted odds ratio (AOR) and 95% confidence interval (CI) were obtained. Results: There were total of 33,456 (8%) patients who received IV tPA (transfers excluded) with available door to needle times. The percentage of AIS patients who received IV tPA increased from 4.8% in 2008 to 9.8% in 2016, and significant increases were also observed among those with DTN ≤45 minutes (11.6% in 2008 to 35.1% in 2016, p Conclusion: Rapid improvements on DTN time were observed in PCNASP. Opportunities for quality improvements within these disparities should be further examined.

Introduction: Cerebrovascular disease is a leading cause of death and disability in the United States. Little is known about the overall burden of cerebrovascular disease across the healthcare system combined with mortality in the United States. Methods: We used data on adults aged 35+ in the 2006 through 2014 Nationwide Emergency Department Sample (NEDS), National Inpatient Sample (NIS) of the Healthcare Cost and Utilization Project (HCUP), and the National Vital Statistics System (NVSS). Cerebrovascular disease was identified using the underlying cause of death in NVSS, and principal diagnoses in NEDS and NIS. The overall burden was estimated by obtaining mutually exclusive events with the total number of treat-and-release ED visits, non-fatal hospitalizations, and deaths. We calculated age-standardized cerebrovascular disease event rates using the year 2010 US Census population and relative percent change (RPC) to assess changes from 2006 to 2014. Results: A total of 685,278 cerebrovascular disease events occurred in 2014 (Table). The age-standardized treat-and-release ED visit rate increased from 10.2 to 15.1/100,000 persons from 2006 to 2014 (RPC of 47%), while death rates decreased 18%. The total cerebrovascular disease event rate increased 12% among persons aged 35-54 from 2006 to 2014 and 2% among persons aged 55-64, while the rate decreased by about 12% among persons aged 65+. Among men aged 35-54, the rates increased from 104.5/100,000 in 2006 to 121.0/100,000 in 2014 (RPC 16%), increased 8% for women 35-54, and 6% for men 55-64 years old. Conclusions: Our findings have important implications regarding rising cerebrovascular disease burden among adults aged 35-64 years. Focused prevention strategies should be implemented, especially among younger adults.

Background: Linking inpatient stroke registries to commercial claims data can provide a unique data source with detailed in-hospital data and long-term information on patient history, post-stroke care, and health outcomes, to answer clinical and pharmacoepidemiological research questions. Such linked data can offer a broader picture than the solely linkage to Medicare Fee-for-Service data. Objectives: To assess the feasibility of linking the Paul Coverdell National Acute Stroke Program registry (PCNASP) to commercial claims data and to evaluate the representativeness of the identified linked population. Methods: All stroke admission records entered in PCNASP between 2008-2015 were considered for linkage to longitudinal patient claims records from a large U.S. commercial health insurer using an algorithm based on age, gender, admission date, discharge date, primary diagnosis, and state. We assessed the linkage quality via the uniqueness level, i.e., the percentage of unique records among the linked subset. The representativeness of the claims-PCNASP-linked population was assessed via absolute standardized differences (SD) for a range of patient and hospital characteristics among linked and unlinked patients with a hospital discharge diagnosis of ischemic stroke. Results: From a claims-based population of 105,033 stroke hospitalizations, a total of 5,975 records (5.7%) were linked to PCNASP with a 99.1% uniqueness. Baseline patient characteristics and in-hospital information between linked and unlinked patients were overall balanced, as assessed by SD Conclusions: A high-quality linkage between PCNASP and commercial claims data using indirect identifiers is feasible allowing to combine detailed disease markers of the acute stroke care episode with long-term follow-up. Despite minor imbalances, the linked subset appeared to be representative of the overall claims-based population with stroke.

No study has examined how the relationship between polycystic ovary syndrome (PCOS) and atherosclerotic cardiovascular diseases (aCVD), of ischemic stroke (ISCH), acute myocardial infarction (AMI), and peripheral vascular disease (PAD), differ in the presence of venous thromboembolism (VTE).We performed a cross-sectional analysis using Truven Health Analytics MarketScan® Commercial databases from 2004-2011. The association between women aged 18-64 years with and without PCOS, and aCVD was assessed using VTE-stratified multivariable logistic regression models.Overall, women with PCOS were more likely to have aCVD, (aOR, 1.27; 95% CI, 1.10-1.46) especially ISCH (aOR, 1.56; 95% CI, 1.30-1.88), than women without PCOS. When stratified by VTE status, women with PCOS and a VTE diagnosis had a decreased odds of having any aCVD (aOR 0.67; 95% CI, 0.46-0.98), and VTE diagnosis more often preceded the occurrence of ISCH and AMI among women with PCOS compared with women without PCOS.Overall, women with PCOS were more likely to have aCVD, with stroke being the most prevalent manifestation. Although VTE often occurred before any aCVD, it appeared to have an inverse association with the development of ISCH, AMI, and PAD among women with PCOS, suggesting that aggressively treating VTE or aCVD early may limit the chances of developing the other thrombogenic condition among women with PCOS.

INTRODUCTION Cardiovascular disease is a leading cause of morbidity and mortality in the United States. Heart age (the predicted age of a person's vascular system based on their cardiovascular risk factor profile) and its comparison with chronological age represent a new way to express risk for developing cardiovascular disease. This study estimates heart age and differences between heart age and chronological age (excess heart age) and examines racial, sociodemographic, and regional disparities in heart age among U.S. adults aged 30-74 years. METHODS Weighted 2011 and 2013 Behavioral Risk Factor Surveillance System data were applied to the sex-specific non-laboratory-based Framingham risk score models, stratifying the results by age and race/ethnic group, educational and income level, and state. These results were then translated into age-standardized heart age values, mean excess heart age was calculated, and the findings were compared across groups. RESULTS Overall, average predicted heart age for adult men and women was 7.8 and 5.4 years older than their chronological age, respectively. Statistically significant (p

Background Approximately 10–20% of children with sickle cell disease (SCD) develop stroke, but few consistent national estimates of the stroke burden for children with SCD exist. The purpose of this study is to determine the proportion of diagnosed stroke among African-American pediatric discharges with and without SCD. Procedure Records for African-Americans aged 1–18 years in the Kids' Inpatient Database (KID) 1997–2012 with ≥1 ICD-9-CM diagnosis code for stroke were included. Data were weighted to provide national estimates. A total of 2,994 stroke cases among African-American children were identified. Diagnoses co-existing with ischemic or hemorrhagic stroke were frequency ranked separately. Results From 1997 through 2012, SCD was present in 24% of stroke discharges, with 89% being ischemic stroke. For hospital discharges of African-American children, SCD is the highest co-existing risk factor for ischemic stroke (29%). Stroke in children with SCD occurred predominantly in children aged 5–9 years, older than previously reported. The trend of stroke discharges significantly decreased for children with SCD from 1997 to 2012 for children aged 10–14 years. Conclusions SCD is a leading risk factor to pediatric stroke in African-American children. Reducing the number of strokes among children with SCD would have a significant impact on the rate of strokes among African-American children. Preventative intervention may be modifying initial age of presentation of stroke in children with SCD. Pediatr Blood Cancer © 2015 Wiley Periodicals, Inc.

Current guidelines recommend that adults with atherosclerotic cardiovascular disease take low-dose aspirin or other antiplatelet medications as secondary prevention of recurrent cardiovascular events. Yet, no national level assessment of low-dose aspirin use for secondary prevention of cardiovascular disease has been reported among a community-based population. Using data from the 2012 National Health Interview Survey, we assessed low-dose aspirin use among those with atherosclerotic cardiovascular disease. We estimated the prevalence ratios of low-dose aspirin use, adjusting for sociodemographic status, health insurance, and cardiovascular risk factors. Among those with atherosclerotic cardiovascular disease (n=3,068), 76% had been instructed to take aspirin, and 88% of those were following this advice. Of those not advised, 11% took aspirin on this own. Overall, 70% were taking aspirin (including those who followed their health care provider's advice and those who were not advised but took aspirin on their own). Logistic regression models showed that women, non-Hispanic blacks and Hispanics, those aged 40–64 years, with a high school education or with some college, or with fewer cardiovascular disease risk factors were less likely to take aspirin than men, non-Hispanic whites, those aged ≥65 years, with a college education or higher, or with all four selected cardiovascular disease risk factors, respectively. Additional analyses conducted among those with coronary heart disease only (n=2,007) showed similar patterns. In conclusion, use of low-dose aspirin for secondary prevention was 70%, with high reported adherence to health care providers' advice to take low-dose aspirin (88%), and significant variability within subgroups.

The prevalence of atrial fibrillation (AF) is increasing in the United States as the population ages, but national surveillance is lacking. This cross-sectional study (2006 to 2014) analyzed data from the Healthcare Cost and Utilization Project's Nationwide Emergency Department Sample, the National (Nationwide) Inpatient Sample, and the National Vital Statistics System. Event totals were estimated independently for emergency department (ED) visits, hospitalizations, and mortality, and then collectively after applying criteria to identify mutually exclusive events. Rates were calculated for AF as primary diagnosis or underlying cause of death (primary AF), as well as secondary diagnosis or contributing cause of death (co-morbid AF), and standardized by age to the 2010 US population. From 2006 to 2014, event rates increased for primary AF (249 to 268 per 100,000) and co-morbid AF (1,473 to 1,835 per 100,000). In 2014, an estimated 599,790 ED visits, 453,060 hospitalizations, and 21,712 deaths listed AF as primary. A total of 684,470 mutually exclusive primary AF and 4,695,997 mutually exclusive co-morbid AF events occurred. Among ED visits and hospitalizations with primary AF, the most common secondary diagnoses were hypertension, heart failure, ischemic heart disease, and diabetes. The mean cost per hospitalization with primary AF was $8,819. Mean costs were higher for those with co-morbid AF versus those without co-morbid AF among hospitalizations with a primary diagnosis of ischemic heart disease, heart failure, stroke, hypertension, or diabetes (all p ≤0.01). In conclusion, with the substantial health and economic impact of AF and an aging US population, improved diagnosis, prevention, management, and surveillance of AF are increasingly important.

Worldwide, stroke is the second leading cause of death and a leading cause of serious long-term disability. In the United States, nearly 800,000 strokes occur each year; thus stroke is the fifth leading cause of death overall and the fourth leading cause of death among women (1). Major advances in stroke prevention through treatment of known risk factors has led to stroke being considered largely preventable. For example, in the United States, stroke mortality rates have declined 70% over the past 50 years, in large part because of important reductions in hypertension, tobacco smoking, and more recently, increased use of anticoagulation for atrial fibrillation (2,3). Although the reduction in stroke mortality is recognized as one of the 10 great public health achievements of the 20th century (4), gains can still be made. Approximately 80% of strokes could be prevented by screening for and addressing known risks with measures such as improving hypertension control, smoking cessation, diabetes prevention, cholesterol management, increasing use of anticoagulation for atrial fibrillation, and eliminating excessive alcohol consumption (5,6).

Background This study describes the national surveillance and modeling methodology developed to monitor achievement of the Million Hearts initiative's aim of preventing 1 million acute myocardial infarctions, strokes, and other related cardiovascular events during 2012–2016. Methods and Results We calculate sex‐ and age‐specific cardiovascular event rates (combination of emergency department, hospitalization, and death events) among US adults aged ≥18 from 2006 to 2011 and, based on log‐linear models fitted to the rates, calculate their annual percent change. We describe 2 baseline strategies to be used to compare observed versus expected event totals during 2012–2016: (1) stable baselines assume no rate changes, with modeled 2011 rates held constant through 2016; and (2) trend baselines assume 2006–2011 rate trends will continue, with the annual percent changes applied to the modeled 2011 rates to calculate expected 2012–2016 rates. Events prevented estimates during 2012–2013 were calculated using available data: 115 210 (95% CI , 60 858, 169 562) events were prevented using stable baselines and an excess of 43 934 (95% CI , −14 264, 102 132) events occurred using trend baselines. Women aged ≥75 had the most events prevented (stable, 76 242 [42 067, 110 417]; trend, 39 049 [1901, 76 197]). Men aged 45 to 64 had the greatest number of excess events (stable, 22 912 [95% CI , 855, 44 969]; trend, 38 810 [95% CI , 15 567, 62 053]). Conclusions Around 115 000 events were prevented during the initiative's first 2 years compared with what would have occurred had 2011 rates remained stable. Recent flattening or reversals in some event rate trends were observed supporting intensifying national action to prevent cardiovascular events.

While stroke mortality rates have decreased substantially in the past 2 decades, this trend has been primarily limited to older adults. Increasing trends in stroke incidence and hospitalizations have been noted among younger adults, but there has been concern that this reflected improved diagnosis through an increased use of imaging rather than representing a real increase.To determine whether stroke hospitalization rates have continued to increase and to identify the prevalence of associated stroke risk factors among younger adults.Hospitalization data from the National Inpatient Sample from 1995 through 2012 were used to analyze acute stroke hospitalization rates among adults aged 18 to 64 years. Hospitalization data from 2003 to 2012 were used to identify the prevalence of associated risk factors for acute stroke. Acute stroke hospitalizations were identified by the principal International Classification of Diseases, Ninth Revision, Clinical Modification code and associated risk factors were identified by secondary International Classification of Diseases, Ninth Revision, Clinical Modification codes for each hospitalization.Trends in acute stroke hospitalization rates by stroke type, age, sex, and race/ethnicity, as well as the prevalence of associated risk factors by stroke type, age, and sex.The 2003-2004 set included 362 339 hospitalizations and the 2011-2012 set included 421 815 hospitalizations. The major findings in this study are as follows: first, acute ischemic stroke hospitalization rates increased significantly for both men and women and for certain race/ethnic groups among younger adults aged 18 to 54 years; they have almost doubled for men aged 18 to 34 and 35 to 44 years since 1995-1996, with a 41.5% increase among men aged 35 to 44 years from 2003-2004 to 2011-2012. Second, the prevalence of stroke risk factors among those hospitalized for acute ischemic stroke continued to increase from 2003-2004 through 2011-2012 for both men and women aged 18 to 64 years (range of absolute increase: hypertension, 4%-11%; lipid disorders, 12%-21%; diabetes, 4%-7%; tobacco use, 5%-16%; and obesity, 4%-9%). Third, the prevalence of having 3 to 5 risk factors increased from 2003-2004 through 2011-2012 (men: from 9% to 16% at 18-34 years, 19% to 35% at 35-44 years, 24% to 44% at 45-54 years, and 26% to 46% at 55-64 years; women: 6% to 13% at 18-34 years, 15% to 32% at 35-44 years, 25% to 44% at 45-54 years, and 27% to 48% at 55-65 years; P for trend .001). Finally, hospitalization rates for intracerebral hemorrhage and subarachnoid hemorrhage remained stable, with the exception of declines among men and non-Hispanic black patients aged 45 to 54 with subarachnoid hemorrhage (13.2/10 000 to 10.3/10 000 hospitalizations and 15.8/10 000 to 11.5/10 000 hospitalizations, respectively).The identification of increasing hospitalization rates for acute ischemic stroke in young adults coexistent with increasing prevalence of traditional stroke risk factors confirms the importance of focusing on prevention in younger adults.

Objectives: Set within the California Stroke Registry/California Coverdell Program (CSR/CCP) - a stroke-care-related quality improvement (QI) program, this study sought to do as follows: (1) describe the program’s previous prevention efforts (through quarter 1 [Q1], 2015); (2) explore what factors were influential in bringing about this programmatic state; and (3) investigate what changes could occur, in order to usher in a better future state for the program. Methodology: Starting in quarter 2, 2015, a systematic review of twenty-seven CSR/CCP documents preceded the conduct of fourteen key informant interviews. Subsequently, content and thematic analyses of the CSR/CCP documents and interview transcripts were performed in NVivo, and, using an action research approach, key stakeholders vetted the findings and translated them into recommendations for change. Findings: (1) In terms of the CSR/CCP’s programmatic state through Q1, 2015, it was revealed that, with respect to (a) recruitment (of registry members), (b) program infrastructure, (c) partnerships, and (d) QI activities, there was misalignment not only with the program’s original guiding vision but also with the prevailing national healthcare trends at that time. Of concern was the program’s lack of a functional data collection system to monitor stroke care - a significant and far-reaching liability. (2) With regard to factors that gave rise to this sub-par programmatic state, this study suggested that certain tangible influences (e.g., historical decisions, staffing patterns, operational constraints) and intangible factors (e.g., held beliefs, a lack of visibility, a lack of programmatic fit within the larger organization) had been important. (3) With respect to changes that could enable the CSR/CCP to achieve a more optimal future state, two key recommendations emerged: (a) that the CSR/CCP ought to adopt more explicit knowledge management practices - i.e., capturing, sharing, and using informational assets; and (b) that the CSR/CCP ought to be working cross-functionally - i.e., establishing multi-disciplinary teams, intentionally-focused on specific aspects of the program’s work. Implications: Out of this project came key findings related to knowledge management and cross-functional teams. Taking action in these areas could enable the use of timely, relevant data in driving the change-related efforts of dedicated human and other resources. Such change could lead to an improved programmatic state, one that (1) is more in line with the CSR/CCP’s original guiding vision; and (2) could serve as a model of clinical medicine and public health coming together to improve health at the community level. While becoming consistent with national healthcare trends, an improved programmatic state could also have immediate local benefits, as the CSR/CCP likely would be more effective in its work to improve the quality of stroke care.

Introduction: Hospital readmissions contribute significantly to the cost of medical care and reflect the burden of disease. Limited data have been reported on national hospital readmission after acute ischemic stroke. Methods: Among 2013 adult hospitalizations from the National Inpatient Sample of the Healthcare Cost and Utilization Project (HCUP) Nationwide Readmissions Database (NRD), we identified acute ischemic stroke (AIS) hospitalizations using principal diagnosis ICD-9-CM codes. We provided national estimates of AIS non-elective readmission rates within 30 days. Results: In 2013, there were a total of 489,813 adult index AIS admissions in the United States. The readmission rate within 30 days for a new AIS as the principal diagnosis was 2.1% of index AIS admissions, and was 10.2% of all readmissions. The readmission rate for all non-elective reasons increased with age, with the lowest readmission rate (8.9%) among ages 18-44, and the highest (11.7%).among ages 85+. The readmission rate was higher among patients with public insurance (11.1%) as compared to private (7.4%) or others (7.9%). Recurrent AIS (20.2%) was the most common reason for readmission, including unspecified cerebral artery occlusion with infarction (ICD9-CM=434.91, 13.0%) and cerebral embolism with infarction (ICD9-CM=434.11, 3.1%). In addition, infections were among the most common causes (Septicemia 5.7%, UTI 2.7%, and pneumonia 2.2%) and TIA (2.4%). Conclusions: The findings have important implications for identifying groups and conditions at high-risk for readmission. The large number of recurrent AIS within 30 days of index AIS highlights the need for improved patient follow-up and secondary prevention treatment.

Background and Purpose— Rehabilitation is recommended after a stroke to enhance recovery and improve outcomes, but hospital’s use of inpatient rehabilitation facilities (IRFs) or skilled nursing facility (SNF) and the factors associated with referral are unknown. Methods— We analyzed clinical registry and claims data for 31 775 Medicare beneficiaries presenting with acute ischemic stroke from 918 Get With The Guidelines-Stroke hospitals who were discharged to either IRF or SNF between 2006 and 2008. Using a multilevel logistic regression model, we evaluated patient and hospital characteristics, as well as geographic availability, in relation to discharge to either IRF or SNF. After accounting for observed factors, the median odds ratio was reported to quantify hospital-level variation in the use of IRF versus SNF. Results— Of 31 775 patients, 17 662 (55.6%) were discharged to IRF and 14 113 (44.4%) were discharged to SNF. Compared with SNF patients, IRF patients were younger, more were men, had less health-service use 6 months prestroke, and had fewer comorbid conditions and in-hospital complications. Use of IRF or SNF varied significantly across hospitals (median IRF use, 55.8%; interquartile range, 34.8%–75.0%; unadjusted median odds ratio, 2.59; 95% confidence interval, 2.44–2.77). Hospital-level variation in discharge rates to IRF or SNF persisted after adjustment for patient, clinical, and geographic variables (adjusted median odds ratio, 2.87; 95% confidence interval, 2.68–3.11). Conclusions— There is marked unexplained variation among hospitals in their use of IRF versus SNF poststroke even after accounting for clinical characteristics and geographic availability. Clinical Trial Registration— URL: https://clinicaltrials.gov . Unique identifier: NCT02284165.

The American Heart Association/American Stroke Association (AHA/ASA) recommended an expansion of the time window for acute ischemic stroke (AIS) reperfusion with intravenous (IV) recombinant tissue plasminogen activator (rt-PA) from 3 to 4.5 hours after symptom onset. We examine rates of IV and intra-arterial (IA) reperfusion before and after the recommendations to track guideline adoption in community practice.Patients with AIS in the Paul Coverdell National Acute Stroke Registry spanning years 2007-2012 were identified. Trends in rates of IV rt-PA versus IA therapy were examined. Outcomes included symptomatic intracerebral hemorrhage (sICH), in-hospital mortality, ability to ambulate at discharge, and discharge destination.From 2007 to 2012, there were 182,235 AIS patients (median age, 72 years; 51.5% women) in the database at the time of analysis. AIS patients receiving IV rt-PA increased significantly from 3.7% in 2007 to 5.1% in 2012 in the ≤3 hours time window and from .2% in 2007 to 1.3% in 2012 in the 3-4.5 hours time window (P.001 for both). There was also a significant increase in the rate of IA therapy between 2007 and 2012 (P.001). There was a significant decrease in the rate of sICH among patients who received any reperfusion between 2007 and 2012.There was a trend for increased utilization of IV rt-PA in the 0-3 hours and the 3-4.5 hours time windows, which began around the same time as the publication of AHA/ASA recommendations in 2009. This increase was associated with an increase in IA treatment rates along with a decrease in overall sICH rates for patients receiving any reperfusion.

Pulmonary hypertension (PH) is an uncommon but progressive condition, and much of what we know about it comes from specialized disease registries. With expanding research into the diagnosis and treatment of PH, it is important to provide updated surveillance on the impact of this disease on hospitalizations and mortality. This study, which builds on previous PH surveillance of mortality and hospitalization, analyzed mortality data from the National Vital Statistics System and data from the National Hospital Discharge Survey between 2001 and 2010. PH deaths were identified using International Classification of Diseases, Tenth Revision codes I27.0, I27.2, I27.8, or I27.9 as any contributing cause of death on the death certificate. Hospital discharges associated with PH were identified using International Classification of Diseases, Ninth Revision, Clinical Modification codes 416.0, 416.8, or 416.9 as one of up to seven listed medical diagnoses. The decline in death rates associated with PH among men from 1980 to 2005 has reversed and now shows a significant increasing trend. Similarly, the death rates for women with PH have continued to increase significantly during the past decade. PH-associated mortality rates for those aged 85 years and older have accelerated compared with rates for younger age groups. There have been significant declines in PH-associated mortality rates for those with pulmonary embolism and emphysema. Rates of hospitalization for PH have increased significantly for both men and women during the past decade; for those aged 85 years and older, hospitalization rates have nearly doubled. Continued surveillance helps us understand and address the evolving trends in hospitalization and mortality associated with PH and PH-associated conditions, especially regarding sex, age, and race/ethnicity disparities.

Every year in the United States more than 600,000 ischemic stroke patients do not receive proven, effective stroke treatment or may not be medically eligible to receive the one medication endorsed by the U.S. Food and Drug Administration for acute ischemic stroke. The lack of treatment is due partly to shortages of neurological experts in rural and underserved areas. Telestroke programs can improve stroke care for stroke patients in rural and underserved settings by using interactive telecommunication technology that connects centrally located neurological experts to rural healthcare facilities. Many states have enacted policies and practices that facilitate telestroke access.We reviewed statutes and regulations in all 50 states that affect the adoption of telemedicine programs and describe examples of state-implemented programs in two states with policies that encourage telestroke use.This review presents evidence of the value and effectiveness of telestroke programs, as well as an explanation of common barriers and facilitators of telestroke, including licensing and credentialing rules, reimbursement issues, and liability concerns. Most states have adopted policies that affect the adoption of telestroke programs. Georgia and South Carolina are examples of states implementing stroke policies using a telestroke model to treat stroke patients in rural areas.