Jungyeon Kim

Mathematica Policy Research

Background: To describe the influence of COVID-19 caseload surges and overall capacity in the intensive care unit (ICU) on mortality among US population and census divisions. Methods: A retrospective analysis of the national COVID ActNow database between January 1, 2021 until March 1, 2022. The main outcome used was COVID-19 weekly mortality rat...

Background Multimorbidity is a global challenge. It is more common in the elderly and deprived populations. Health systems are not providing appropriate care for people with multimorbidity as they are focused on managing single diseases and are not oriented to effectively manage complexity of care-coordination for multimorbidity. This study aims to...

Introduction Emergency department (ED) crowding is associated with increased mortality and delays in care. We developed a rapid admission pathway targeting critically-ill trauma patients in the ED. This study investigates the sustainability of the pathway, as well as its effectiveness in times of increased ED crowding. Materials & methods This was...

Background Neighborhood stress score (NSS) and area deprivation index (ADI) are two neighborhood-based composite measures used to quantify an individual's socioeconomic risk based on home location. In this analysis, we compare the relationships between an individual's socioeconomic risk, based on each of these measures, and potentially preventable...

Study objective: The effect of urgent cares on local emergency department (ED) patient volumes is presently unknown. In this paper, we aimed to assess the change in low-acuity ED utilization at 2 academic medical centers in relation to patient proximity to an affiliated urgent care. Methods: We created a geospatial database of ED visits occurrin...

A variety of hospital characteristics, including teaching status, ownership, location, and size, have been shown to be associated with quality measure performance. The association of hospital characteristics, including teaching intensity, with performance on the Centers for Medicare & Medicaid Services (CMS) SEP-1 sepsis measure has not been well s...

Background The prices and the coverage of effective direct-acting antivirals (DAAs) to treat hepatitis C vary across countries. South Korea expanded DAAs coverage through national health insurance. This study aims to analyse the cost-effectiveness of scale-up of hepatitis C screening and treatment with DAAs in South Korea, a high-income country. M...

Background: Tuberculosis (TB) is a major global health burden, which has been inadequately addressed. This study aims to analyze different patterns and gaps of care along the care cascade across countries and to develop a model to examine the relationship between performance of tuberculosis programmes in high and low burden countries along the tub...

Objective: There have been various interventions to reduce ED utilization. Little is known about the sustainability of outcomes of interventions to reduce ED overcrowding. We sought to investigate whether the outcomes from one of successful interventions to reduce ED utilization, specialist physician level reporting were sustained over time and ho...

As emergency department (ED) crowding continues to worsen, many visits are at academic referral hospitals. As a result, engaging specialty services will be essential to decompressing the ED. To do this, it will be important to understand which specialties to focus interventions on for the greatest impact. To characterize the ED utilization of non-s...

Quality measures are increasingly used to measure the performance of providers, hospitals, and health care systems. Intensive care units (ICUs) are an important clinical area in hospitals, given that they generate high costs and present high risks to patients. Yet, currently, few valid and clinically significant ICU-specific outcome measures are re...

Background Much work on reducing ED utilization has focused on primary care practices, but few studies have examined ED visits from patients followed by specialists, especially when the ED visit is related to the specialist’s clinical practice. Objective To determine the proportion and characteristics of patients that utilized the ED for specialty...

Purpose: To examine the difference between rural and urban hospitals as to their overall level of readiness for stage 2 meaningful use of electronic health records (EHRs) and to identify other key factors that affect their readiness for stage 2 meaningful use. Methods: A conceptual framework based on the theory of organizational readiness for ch...

EHR vendor selection is one of the most important initial steps in process of Electroinc Health Records (EHR) implementation. A mismatch between EHR vendor and hospital can have significant adverse effect on the implementation of EHR. However, it is very hard to select a vendor that suits an organizational among the many available vendors in the ma...

Background: Change and Transformation are terms that are frequently found in much of the healthcare management and change literature. However, over time the meanings of these terms have been diluted as multiple theories, concepts, and models use the same terms to describe different phenomenon. Objective: The purpose of this study is to provide a de...

Background: A health care organization often engages in the simultaneous implementation of multiple organization change initiatives. However, the degree to which these initiatives are implemented and can be enhanced based on their interdependencies is an open question. How organizations and the change initiatives they pursue might benefit from mor...