223 results match your criteria: "Center for Health Analytics[Affiliation]"

Double-zero-event studies (DZS) pose a challenge for accurately estimating the overall treatment effect in meta-analysis. Current approaches, such as continuity correction or omission of DZS, are commonly employed, yet these ad hoc methods can yield biased conclusions. Although the standard bivariate generalized linear mixed model can accommodate DZS, it fails to address the potential systemic differences between DZS and other studies.

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Text Messages to Promote Physical Activity in Patients With Cardiovascular Disease: A Micro-Randomized Trial of a Just-In-Time Adaptive Intervention.

Circ Cardiovasc Qual Outcomes

July 2024

Division of Cardiovascular Diseases, Department of Internal Medicine (J.R.G., R.S., V.S.E.J., E.L., S. Kohnstamm, B.K.N.), University of Michigan.

Background: Text messages may enhance physical activity levels in patients with cardiovascular disease, including those enrolled in cardiac rehabilitation. However, the independent and long-term effects of text messages remain uncertain.

Methods: The VALENTINE study (Virtual Application-supported Environment to Increase Exercise) was a micro-randomized trial that delivered text messages through a smartwatch (Apple Watch or Fitbit Versa) to participants initiating cardiac rehabilitation.

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One-shot distributed algorithms for addressing heterogeneity in competing risks data across clinical sites.

J Biomed Inform

February 2024

The Center for Health Analytics and Synthesis of Evidence (CHASE), University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania; Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA; The Graduate Group in Applied Mathematics and Computational Science, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA; Leonard Davis Institute of Health Economics, Philadelphia, PA, USA; Penn Medicine Center for Evidence-based Practice (CEP), Philadelphia, PA, USA; Penn Institute for Biomedical Informatics (IBI), Philadelphia, PA, USA. Electronic address:

Objective: To characterize the interplay between multiple medical conditions across sites and account for the heterogeneity in patient population characteristics across sites within a distributed research network, we develop a one-shot algorithm that can efficiently utilize summary-level data from various institutions. By applying our proposed algorithm to a large pediatric cohort across four national Children's hospitals, we replicated a recently published prospective cohort, the RISK study, and quantified the impact of the risk factors associated with the penetrating or stricturing behaviors of pediatric Crohn's disease (PCD).

Methods: In this study, we introduce the ODACoRH algorithm, a one-shot distributed algorithm designed for the competing risks model with heterogeneity.

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Background: Mobile health (mHealth) interventions have the potential to deliver longitudinal support to users outside of episodic clinical encounters. We performed a qualitative substudy to assess the acceptability of a text message-based mHealth intervention designed to increase and sustain physical activity in cardiac rehabilitation enrollees.

Methods And Results: Semistructured interviews were conducted with intervention arm participants of a randomized controlled trial delivered to low- and moderate-risk cardiac rehabilitation enrollees.

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Background: Smartphone applications and wearable devices are promising mobile health interventions for hypertension self-management. However, most mobile health interventions fail to use contextual data, potentially diminishing their impact. The myBPmyLife Study is a just-in-time adaptive intervention designed to promote personalized self-management for patients with hypertension.

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Real-World Effectiveness of BNT162b2 Against Infection and Severe Diseases in Children and Adolescents.

Ann Intern Med

February 2024

The Center for Health Analytics and Synthesis of Evidence (CHASE), Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania Perelman School of Medicine, and The Graduate Group in Applied Mathematics and Computational Science, School of Arts and Sciences, University of Pennsylvania, Leonard Davis Institute of Health Economics, Penn Medicine Center for Evidence-based Practice (CEP), and Penn Institute for Biomedical Informatics (IBI), Philadelphia, Pennsylvania (Y.C.).

Article Synopsis
  • The study evaluates the BNT162b2 vaccine's effectiveness in preventing COVID-19 infection and severe illness in children and adolescents, focusing on the Delta and Omicron variants.
  • It involved analyzing data from over 77,000 adolescents during the Delta phase and 167,000 children and adolescents during the Omicron phase, comparing vaccinated individuals to those unvaccinated.
  • Results showed the vaccine was extremely effective (98.4%) during the Delta period, while the effectiveness during the Omicron period dropped to around 74.3%, with no significant impact on cardiac complications among vaccinated individuals.
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Background: The rising adoption of wearable technology increases the potential to identify arrhythmias. However, specificity of these notifications is poorly defined and may cause anxiety and unnecessary resource utilization. Herein, we report results of a follow-up screening protocol for incident atrial fibrillation/flutter (AF) within a large observational digital health study.

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Pharmacogenetic testing and monitoring of complete blood counts among Veterans newly prescribed thiopurine treatments: a retrospective cohort study.

J Pharm Policy Pract

December 2023

Department of Veterans Affairs Salt, Lake City Health Care System, 500 Foothill Drive, Salt Lake City, UT, 84148, USA.

Pharmacogenetic (PGx) testing before initiation of thiopurine treatment and CBC monitoring post-initiation helps avoid adverse events and ensure patient safety. This study aims to evaluate trends in PGx testing and CBC monitoring among Veterans prescribed azathioprine, thioguanine, or mercaptopurine to demonstrate VA's efforts to improve medication safety after an adverse event. To assess testing patterns, we used VA electronic health report data to identify 20,524 Veterans who first began thiopurine treatment between January 1, 2010, to December 31, 2021.

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Confidence score: a data-driven measure for inclusive systematic reviews considering unpublished preprints.

J Am Med Inform Assoc

April 2024

The Center for Health Analytics and Synthesis of Evidence (CHASE), Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, PA 19104, United States.

Objectives: COVID-19, since its emergence in December 2019, has globally impacted research. Over 360 000 COVID-19-related manuscripts have been published on PubMed and preprint servers like medRxiv and bioRxiv, with preprints comprising about 15% of all manuscripts. Yet, the role and impact of preprints on COVID-19 research and evidence synthesis remain uncertain.

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Best practices for statistical analysis of pretransplant medical urgency.

J Heart Lung Transplant

March 2024

Department of Medicine, University of Chicago, Chicago, Illinois; Department of Public Health Sciences, University of Chicago, Chicago, Illinois; MacLean Center for Clinical Medical Ethics, University of Chicago, Chicago, Illinois.

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Dental implants are a predictable option to replace missing teeth. Patients on antiresorptive medications used to treat disorders associated with bone resorption may need dental implants to replace missing teeth. The data on implant failure in patients on antiresorptive medication requiring dental implants, is conflicting and limited.

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Introduction: This study analyzes age-differentiated Reddit conversations about ENDS.

Methods: This study combines 2 methods to (1) predict Reddit users' age into 2 categories (13-20 years [underage] and 21-54 years [of legal age]) using a machine learning algorithm and (2) qualitatively code ENDS-related Reddit posts within the 2 groups. The 25 posts with the highest karma score (number of upvotes minus number of downvotes) for each keyword search (i.

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A randomized trial of a mobile health intervention to augment cardiac rehabilitation.

NPJ Digit Med

September 2023

Division of Cardiovascular Diseases, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA.

Mobile health (mHealth) interventions may enhance positive health behaviors, but randomized trials evaluating their efficacy are uncommon. Our goal was to determine if a mHealth intervention augmented and extended benefits of center-based cardiac rehabilitation (CR) for physical activity levels at 6-months. We delivered a randomized clinical trial to low and moderate risk patients with a compatible smartphone enrolled in CR at two health systems.

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Towards precise PICO extraction from abstracts of randomized controlled trials using a section-specific learning approach.

Bioinformatics

September 2023

Section of Biomedical Informatics and Data Science, School of Medicine, Yale University, 100 College St, New Haven, CT 06510, United States.

Motivation: Automated extraction of participants, intervention, comparison/control, and outcome (PICO) from the randomized controlled trial (RCT) abstracts is important for evidence synthesis. Previous studies have demonstrated the feasibility of applying natural language processing (NLP) for PICO extraction. However, the performance is not optimal due to the complexity of PICO information in RCT abstracts and the challenges involved in their annotation.

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Importance: Black and Hispanic patients are less likely to survive an out-of-hospital cardiac arrest (OHCA) than White patients. Given the central importance of emergency medical service (EMS) agencies in prehospital care, a better understanding of OHCA survival at EMS agencies that work in Black and Hispanic communities and White communities is needed to address OHCA disparities.

Objective: To examine whether EMS agencies serving catchment areas with primarily Black and Hispanic populations (Black and Hispanic catchment areas) have different rates of OHCA survival than agencies serving catchment areas with primarily White populations (White catchment areas).

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Objectives: In the USA, tobacco product free samples (FS) are prohibited, except for smokeless tobacco samples distributed under certain conditions in qualified adult-only facilities. We examined prevalence and frequency of FS receipt among adults who use tobacco, channels of FS distribution and the potential effect of FS use on subsequent product purchase.

Methods: From 15 April through 12 July 2020, a total of 1989 adult participants in the National Panel of Tobacco Consumer Studies completed a mixed-mode survey on receipt and use of FS of cigarettes, cigars, smokeless tobacco, e-cigarettes and hookah tobacco.

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Association Between Wearable Device Measured Activity and Patient-Reported Outcomes for Heart Failure.

JACC Heart Fail

November 2023

Division of Cardiovascular Diseases, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA; Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA; The Center for Clinical Management and Research, Ann Arbor VA Medical Center, Ann Arbor, Michigan, USA.

Background: Wearable devices are increasingly used in research and clinical care though the relevance of their data in the context of validated outcomes remains unknown.

Objectives: The purpose of this study was to characterize the relationship between smartwatch activity and patient-centered outcomes in patients with heart failure.

Methods: CHIEF-HF (Canagliflozin: Impact on Health Status, Quality of Life and Functional Status in Heart Failure) was a randomized-controlled clinical trial that enrolled participants with heart failure and a compatible smartphone.

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Awareness of and receptivity to FDA's point-of-sale tobacco public education campaign.

PLoS One

July 2023

Public Health Systems Innovation and Transformation, MITRE Corporation, Rockville, Maryland, United States of America.

The purpose of the study was to assess awareness of and receptivity to FDA's point-of-sale (POS) tobacco public education campaign for adult cigarette smokers called Every Try Counts; it was the first multi-county POS campaign in the U.S. The design was a county-level treatment-control three-wave longitudinal design.

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The COVID-19 pandemic has had deep influence on American life. However, the burden of the pandemic has not been distributed equally among members of a population based on their demographic features. The purpose of this study was to investigate whether sex, age, race, and religion were associated with COVID-19 positivity rates in Boone County, Missouri over a 22-month period (March 15, 2020 to December 2, 2021) of the pandemic.

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Importance: Insurance status has been associated with whether patients with ST-segment elevation myocardial infarction (STEMI) presenting to emergency departments are transferred to other facilities, but whether the facility's percutaneous coronary intervention capabilities mediate this association is unknown.

Objective: To examine whether uninsured patients with STEMI were more likely than patients with insurance to experience interfacility transfer.

Design, Setting, And Participants: This observational cohort study compared patients with STEMI with and without insurance who presented to California emergency departments between January 1, 2010, and December 31, 2019, using the Patient Discharge Database and Emergency Department Discharge Database from the California Department of Health Care Access and Information.

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Introduction: A 6-month course of isoniazid, 300 mg daily, was programmatically introduced in Eritrea in 2014 as tuberculosis preventive therapy in people living with human immunodeficiency virus (PLHIV). The rollout of isoniazid preventive therapy (IPT) in PLHIV was successful in the first 2-3 years. After 2016, rumours based on rare but real incidents of liver injuries following use of IPT spread widely across the country and created concerns amongst healthcare professionals and consumers, that ultimately caused dramatic decline in the rollout of the intervention.

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Ambient air pollution, temperature, and social stressor exposures are linked with asthma risk, with potential synergistic effects. We examined associations for acute pollution and temperature exposures, with modification by neighborhood violent crime and socioeconomic deprivation, on asthma morbidity among children aged 5-17 years year-round in New York City. Using conditional logistic regression in a time-stratified, case-crossover design, we quantified percent excess risk of asthma event per 10-unit increase in daily, residence-specific exposures to PM, NO, SO, O, and minimum daily temperature (Tmin).

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Use of exception status listing and related outcomes during two heart allocation policy periods.

J Heart Lung Transplant

September 2023

Division of Cardiovascular Diseases, Department of Internal Medicine, University of Michigan, MI; Scientific Registry of Transplant Recipients, Hennepin Healthcare Research Institute, Minneapolis MN.

Background: The October 2018 update to the heart allocation policy was intended to decrease exception status requests, whereby candidates are listed at a specific status due to perceived need despite not meeting prespecified criteria of illness severity. We assessed the use of exception status and waitlist outcomes before and after the 2018 policy.

Methods: We used data from the Scientific Registry of Transplant Recipients on adult heart transplant candidates listed from 2015 to 2021.

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Background: The South Asian Association for Regional Cooperation (SAARC) covers Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, and Sri Lanka. We conducted a comparative analysis of the trade-off between the health policies for the prevention of COVID-19 spread and the impact of these policies on the economies and livelihoods of the South Asia populations.

Methods: We analyzed COVID-19 data on epidemiology, public health and health policy, health system capacity, and macroeconomic indicators from January 2020 to March 2021 to determine temporal trends by conducting joinpoint regression analysis using average weekly percent change (AWPC).

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