Yiyan Liu

ORCID: 0000-0003-2706-383X
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About
Contact & Profiles
Research Areas
  • Healthcare Policy and Management
  • Global Health Care Issues
  • Healthcare Systems and Reforms
  • Primary Care and Health Outcomes
  • Adolescent and Pediatric Healthcare
  • Pediatric Hepatobiliary Diseases and Treatments
  • Hematological disorders and diagnostics
  • Geriatric Care and Nursing Homes
  • Pituitary Gland Disorders and Treatments
  • Statistical Methods and Bayesian Inference
  • Machine Learning and Algorithms
  • Algorithms and Data Compression
  • Global Health Workforce Issues
  • Gastroesophageal reflux and treatments
  • Infant Development and Preterm Care
  • Bartonella species infections research
  • Advanced Causal Inference Techniques
  • Myasthenia Gravis and Thymoma
  • Child and Adolescent Health
  • Vascular anomalies and interventions
  • Insurance and Financial Risk Management
  • Eosinophilic Esophagitis
  • Web Data Mining and Analysis
  • Caching and Content Delivery
  • Tracheal and airway disorders

University of Louisville Hospital
2025

RTI International
2013-2019

University of North Carolina Wilmington
2019

National Bureau of Economic Research
2013

National Center for Health Statistics
2013

University Hospital, Newark
2008-2011

Zhejiang University
2006

Reduced gallbladder ejection fraction (GBEF) with normal laboratory tests and no gallstones on ultrasound can be attributed to conditions such as biliary dyskinesia, chronic acalculous cholecystitis, cystic duct syndrome, sphincter of Oddi dysfunction, subclinical stricture. We present a case patient right upper quadrant pain, diagnosed reduced GBEF, labs, gallstones. The patient’s symptoms resolved after endoscopic retrograde cholangiopancreatography sphincterotomy, revealing mild,...

10.56305/001c.127836 article EN Journal of Brown Hospital Medicine 2025-01-02

Objective To demonstrate rolling entry matching (REM), a new statistical method, for comparison group selection in the context of staggered nonuniform participant nonrandomized interventions. Study Setting Four Health Care Innovation Award (HCIA) interventions between 2012 and 2016. Design Center Medicare Medicaid HCIA participants entering these over time were matched with nonparticipants who exhibited similar pattern health care use expenditures during each participant's baseline period....

10.1111/1475-6773.13086 article EN Health Services Research 2018-11-09

10.1016/j.jhealeco.2014.08.006 article EN Journal of Health Economics 2014-08-28

Currently, most search engines are text-based and their structures centralized. These kinds of engine sufficient for searching text information in Internet. However, while audio resource, an efficient content-based is required. In this paper, we demonstrate ASEKS based on keyword spotting technology the peer-to-peer (P2P) network. The indexing sub-model spots local files generates indices later query; P2P networks distributes query gathers results. supports scalability avoids bottleneck...

10.1109/ism.2006.33 article EN 2006-01-01

Fluorodeoxyglucose (FDG) is not specific for malignancies and various forms of inflammatory lesions may demonstrate increased uptake. We report a case 46-year-old woman who presented with chronic leg pain, MRI showed abnormal signal the leg. FDG PET-CT demonstrated multiple foci intense uptake bone marrow lower extremities suspicious hematopoietic malignancy. Biopsy revealed necrotizing granulomatous inflammation. Even though inflammation uncommon in marrow, it should be included...

10.1097/rlu.0b013e318184b423 article EN Clinical Nuclear Medicine 2008-09-12

The gold standard of experimental research is the randomized control trial.However, interventions are often implemented without a group for practical or ethical reasons.Propensity score matching (PSM) popular method minimizing effects experiment from observational data by members treatment to similar candidates that did not receive intervention.Traditional PSM designed studies enroll participants on rolling basis and does provide solution in which baseline intervention period undefined...

10.32614/rj-2019-005 article EN The R Journal 2019-01-01

We study whether employer premium contribution schemes could impact the pricing behavior of health plans and contribute to rising premiums.Using 1991-2011 data before after a 1999 subsidy policy change in Federal Employees Health Benefits Program (FEHBP), we find that scheme has differential on plan based two market incentives: 1) consumers are less price sensitive when they only need pay part increase, 2) each an incentive increase employer's plan.Both incentives found growth.Counterfactual...

10.3386/w19760 preprint EN 2013-12-01

To assess psychometric properties of a recently-designed medical-homeness instrument, the Medical Home Attributes Scale (MHAS), we surveyed clinical practices with NCQA recognition as medical homes.Exploratory factor-analyses 25 clinician-rated MHAS items from 228 revealed four underlying factors: team interactions, record review/documentation, reviewing patient needs, and quality improvement/monitoring.In multivariable regressions, scores were 8.5 points higher for multispecialty vs....

10.15761/hpc.1000116 article EN cc-by Health and Primary Care 2017-01-01
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