Yonsu Kim

Prof. Yonsu Kim

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Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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30 July 2021 in Journal of Asthma
Verified
Journal Article
Closed access
YKYonsu Kim
Yonsu Kim
MPMatthew Pirritano
Matthew Pirritano
KPKatrina Miller Parrish
Katrina Miller Parrish
We sought to identify racial/ethnic patterns of health care utilization for asthma among asthmatic children (ages 0-18) and address unequal access to optimal asthma management as a determinant of a...

7 January 2021 in Journal of Public Health
Verified
Journal Article
Closed access
PDF file
YKYonsu Kim
Yonsu Kim
JCJohn Cho
John Cho
FWFrank Wen
Frank Wen
SCSimon Choi
Simon Choi

JYJi Won Yoo
Ji Won Yoo
Peter ReedPeter Reed
Peter Reed
JSJay Shen
Jay Shen
Jennifer CarsonJennifer Carson
Jennifer Carson
MKMingon Kang
Mingon Kang
Maryam TabriziMaryam Tabrizi
Maryam Tabrizi
Telehealth has been adopted as an alternative to in-person primary care visits. With multiple participants able to join remotely, telehealth can facilitate the discussion and documentation of advance care planning (ACP) for those with Alzheimer’s disease-related disorders (ADRDs). We measured hospitalization-associated utilization outcomes, instances of hospitalization and 90-day re-hospitalizations from payors’ administrative databases and verified the data via electronic health records. We estimated the hospitalization-associated costs using the Nevada State Inpatient Dataset and compared the estimated costs between ADRD patients with and without ACP documentation in the year 2021. Compared to the ADRD patients without ACP documentation, those with ACP documentation were less likely to be hospitalized (mean: 0.74; standard deviation: 0.31; p < 0.01) and were less likely to be readmitted within 90 days of discharge (mean: 0.16; standard deviation: 0.06; p < 0.01). The hospitalization-associated cost estimate for ADRD patients with ACP documentation (mean: USD 149,722; standard deviation: USD 80,850) was less than that of the patients without ACP documentation (mean: USD 200,148; standard deviation: USD 82,061; p < 0.01). Further geriatrics workforce training is called for to enhance ACP competencies for ADRD patients, especially in areas with provider shortages where telehealth plays a comparatively more important role.

30 December 2022 in Journal of Asthma
Verified
Journal Article
Closed access
YKYonsu Kim
Yonsu Kim
KPKatrina Miller Parrish
Katrina Miller Parrish
MPMatthew Pirritano
Matthew Pirritano
SMSheniz Moonie
Sheniz Moonie
Introduction: Higher rates of ED visits and hospitalizations for asthma among African American and Hispanic children may indicate suboptimal management of asthma, leading to a greater financial burden of healthcare. It is not well known if an association of race/ethnicity with controller medication and hospital-based care utilization exists. Objective: This study examines whether the Asthma Medication Ratio (AMR) predicts healthcare utilization for asthma by race/ethnicity. Methods: 4,584 Medi-Cal children (Ages 5-11) with persistent asthma in Los Angeles were identified and their AMRs (2018) were calculated based on the HEDIS criteria. Healthcare utilization data were used, including hospitalizations, ED visits, and pharmacy claims to examine whether a higher AMR predicts decreases in healthcare utilization by race/ethnicity in the subsequent 3,6, and 12 months (2019). Results: The average AMR was lowest among African American children (0.401). In the subsequent 12 months, they were highest in ED visits (0.249) and hospitalizations (0.121), but lowest in outpatient visits (0.793). The results of logistic regression showed that a higher value of AMR (> 0.5) contributed to decreases in ED visits in the subsequent 12 months only among African Americans (OR = 0.551, 95% CI 0.364-0.832) and Hispanics (OR = 0.613, 95% CI 0.489-0.770). No association between AMR and hospitalizations was found. Conclusions: Our findings indicate that increased use of controller medication contributes to a decrease in ED visits among African American and Hispanic children with persistent asthma. Increased use of controller medications and caregiver’s efforts for medication adherence may contribute to a reduction in asthma disparities.

20 May 2023 in Economics & Human Biology
Verified
Journal Article
Closed access
YKYonsu Kim
Yonsu Kim
YLYongsoo Lee
Yongsoo Lee

YKYonsu Kim
Yonsu Kim
JSJay Shen
Jay Shen
ICIan Choe
Ian Choe
JRJerry D Reeves
Jerry D Reeves
DBDavid Byun
David Byun
JYJi Won Yoo
Ji Won Yoo
To people living with Alzheimer’s Disease-Related Disorders (ADRD), timely and coordinated communication is essential between their informal caregivers and healthcare providers. In provider shortage areas, for example, the state of Nevada, telehealth can be an effective primary care delivery alternative to in-person visits. To evaluate the cost-effectiveness of telehealth visits for people living with ADRD in the state of Nevada, a decision-analytic Markov model was developed from healthcare system perspectives with a 10-year horizon/1-year cycle. To estimate the effects of demographic and geographic parameters on the Markov model, race parameters were divided into non-Hispanic White individuals vs. others and location parameters were divided into urban vs. rural. A 12-item short-version Zarit Burden Interview (ZBI-12) was applied to measure the informal caregiver burdens of non-institutionalized people living with ADRD. The values of mortality rate and healthcare utilization were obtained from healthcare systems’ publicly available payor administrative data and Nevada State Inpatient/Emergency Department datasets. Among urban-residing non-Hispanic White individuals, the Incremental Cost-Effectiveness Ratio (ICER) per modified ZBI-12 indicated a cost saving of USD 9.44 with telehealth visits; among urban-residing racial minorities, the ICER per modified ZBI-12 indicated a cost saving of USD 29.26 with in-person visits; and among rural residents, the ICER per modified ZBI-12 indicated a cost-saving of USD 320.93 with telehealth visits. Distributional differences in the cost-saving effects of telehealth primary care were noted in line with racial and geographic parameters. Workforce and caregiver training is necessary for reducing distributional differences, especially among urban-residing racial monitories living with ADRD in the provider shortage area of the state of Nevada.