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Fan, Chun

0000-0003-2801-7069

Mayo Clinic

Mayo Clinic

Citations 16

Risk of Multiple Sclerosis Among Persons With Epstein-Barr Virus–Positive Mononucleosis
Hall, Susan A. , Jacobson, Robert M. , Keegan, B. Mark, Fan, Chun , McPhee, Roderick , Buck, Philip O. , Diaz-Decaro, John, Keegan, B. Mark , Keegan, B Mark , Jacobson, Robert M , Sauver, Jennifer L. St. , Diaz‐Decaro, John

Neurology Open Access | April 1, 2026 | Volume: 2 | Issue: 2 | Pages: No page available

10.1212/wn9.0000000000000082 Get It

Elevated Risk of Multiple Sclerosis and Related Outcomes in Epstein-Barr Virus-Positive Infectious Mononucleosis: A Population-Based Cohort Study (P12-10.001)
Diaz‐Decaro, John , Sauver, Jennifer St., Fan, Chun , Hall, Susan A. , Senko, Enejda, Garcia, Ali A. Duarte, Crowson, Cynthia S. , Yang, Jeffrey X. , Keegan, Mark T. , DaVeiga, Sigrid Payne, Buck, Philip O. , St Sauver, Jennifer L , Jacobson, Robert M.

Neurology | April 7, 2025 | Volume: 104 | Issue: 7_Supplement_1 | Pages: No page available

10.1212/wnl.0000000000212313 Get It

Emergency department visits and hospitalizations attributable to recent Epstein-Barr virus infection
Weston, Susan A., Fan, Chun , McPhee, Roderick , Buck, Philip O. , Hall, Susan A. , Sauver, Jennifer L. St. , Jacobson, Robert M.

Current Medical Research and Opinion | October 15, 2024 | Volume: 40 | Issue: 11 | Pages: 1885-1891

10.1080/03007995.2024.2408465 Get It

Primary human papillomavirus testing by clinician- versus self-collection: Awareness and acceptance among cervical cancer screening-eligible women
MacLaughlin, Kathy L. , Jenkins, Gregory D. , Fan, Chun , Miller, Nathaniel E. , Meyer, Amanda F. , Jacobson, Robert M. , St Sauver, Jennifer, Miller, Nathaniel E , Jacobson, Robert M , Sauver, Jennifer L. St. , Rutten, Lila J. Finney

Journal of Medical Screening | June 13, 2024 | Volume: 31 | Issue: 4 | Pages: 223-231

10.1177/09691413241260019 Get It

Objectives Primary human papillomavirus (HPV) testing by clinician-collection is endorsed by U.S. guideline organizations for cervical cancer screening, but uptake remains low and insights into patients’ understanding are limited. This study aims to primarily address patient awareness of primary HPV screening by clinician-collection and acceptance of primary HPV screening by clinician- and self-collection, and secondarily assess factors associated with awareness and acceptance. Setting Primary care practices affiliated with an academic medical center. Methods A cross-sectional survey study of screening-eligible women aged 30–65 years was conducted to assess awareness and acceptability of primary HPV screening. We analyzed bivariate associations of respondent characteristics with awareness of primary HPV screening by clinician-collection, willingness to have clinician- or self-collected primary HPV testing, and reasons for self-collection preference. Results Respondents (n = 351; response rate = 23.4%) reported cervical cancer screening adherence of 82.8% but awareness of clinician-collected primary HPV as an option was low (18.9%) and only associated with HPV testing with recent screening ( p = 0.003). After reviewing a description of primary HPV screening, willingness for clinician-collected (81.8%) or home self-collected (76.1%) HPV testing was high, if recommended by a provider. Acceptability of clinician-collected HPV testing was associated with higher income ( p = 0.009) and for self-collection was associated with higher income ( p = 0.002) and higher education ( p = 0.02). Higher education was associated with reporting self-collection as easier than clinic-collection ( p = 0.02). Women expected self-collection to be more convenient (94%), less embarrassing (85%), easier (85%), and less painful (81%) than clinician-collection. Conclusions Educational interventions are needed to address low awareness about the current clinician-collected primary HPV screening option and to prepare for anticipated federal licensure of self-collection kits. Informing women about self-collection allows them to recognize benefits which could address screening barriers.
Multi-morbidity and patient-reported functional limitations: a population-based cohort study
Chamberlain, Alanna M. , Boyd, Cynthia M. , Fan, Chun , Jacobson, Debra J., Rocca, Walter A. , Chamberlain, Alanna M , Sauver, Jennifer L. St. , Rutten, Lila J. Finney

Journal of Multimorbidity and Comorbidity | May 30, 2022 | Volume: 12 | Issue: No issue available | Pages: No page available

10.1177/26335565221105448 Get It

Background Persons who accumulate chronic conditions at a rate faster than their peers may experience accelerated aging and poor health outcomes, including functional limitations. Methods Adults aged ≥40 years who resided in Olmsted County, Minnesota on 1 January 2006 were identified. The prevalence of 21 chronic conditions was ascertained, and age-specific quartiles of the number of chronic conditions was estimated within 4 age groups: 40–54, 55–64, 65–74, and ≥75 years. Difficulty with nine patient-reported functional limitations (including basic and instrumental activities of daily living and mobility activities) were ascertained through 31 October 2018. Cox regression was used to model associations of chronic condition quartiles with new-onset functional limitations considered separately. We estimated absolute risk differences and hazard ratios stratified by age group, and adjusted for sex, race, ethnicity, marital status, education, and the residual effect of age. Results Among 39,624 persons (44.5% men, 93.2% white), the most common reported new functional limitations were difficulty with climbing stairs, walking, and housekeeping. For all functional limitations, the absolute risk differences were largest among the oldest age group (≥75 years). Approximately twofold increased hazard ratios were observed among those in the highest vs. lowest quartile for the three oldest age groups, and approximately threefold or higher hazard ratios were observed for persons aged 40-54 years. Conclusion Persons with increased accumulation of chronic conditions experience increased risks of developing functional limitations compared to their peers. These findings underscore the importance of assessing health status and of employing interventions to prevent and effectively manage multi-morbidity at all ages.
Prevalence of co‐occurring serious illness diagnoses and association with health care utilization at the end of life
Nothelle, Stephanie , Jacobson, Debra J., Green, Ariel R. , Boyd, Cynthia M. , Rocca, Walter A. , Fan, Chun , Jacobson, Debra, Green, Ariel R , Nothelle, Stephanie , Chamberlain, Alanna M. , Sauver, Jennifer L. St.

Journal of the American Geriatrics Society | May 20, 2022 | Volume: 70 | Issue: 9 | Pages: 2621-2629

10.1111/jgs.17881 Get It

Abstract Introduction End‐of‐life care differs by serious illness diagnosis. Cancer and dementia are serious illnesses that have been associated with less intensive end‐of‐life health care use. It is not known how health care utilization varies in the presence of >1 serious illness. Methods We used the Rochester Epidemiology Project to identify persons living in a midwestern area who died on July 1, 2017–June 30, 2018 at age ≥65 years, and were seriously ill. We examined the number of emergency department (ED), hospital, and intensive care unit (ICU) stays in the last 6 months and the last 30 days of life. We used Poisson regression to determine the incidence rate ratio for ED, hospital, and ICU stay in the last 6 months and 30 days of life by number of serious illness diagnoses. For cancer and dementia, we examined the effect of an additional serious illness. Results We included a population of 1372 adults who were, on average, 84 years, 52% female, and 96% white. Approximately 41% had multiple serious illnesses. Compared to older adults with 1 serious illness diagnosis, rates of hospitalization, and ICU stay for adults with 2 or ≥3 serious illness diagnoses were at least 1.5 times higher in the last 6 months and the last 30 days of life. Rates of ED visits were significantly higher for older adults with 2 or ≥3 serious illness diagnoses in the last 6 months of life, but only higher for those with ≥3 versus 1 serious illness diagnosis in the last 30 days of life. For both cancer and dementia, rates of ED visits, hospitalization and ICU stay were lower for the condition alone than when an additional serious illness diagnosis was present. Conclusion Having multiple serious illnesses increases the risk of health care utilization at the end of life.
Incidence of Obesity at 1 and 3 Years Among Community Dwelling Adults: A Population-Based Study
DeJesus, Ramona S. , Croghan, Ivana T. , Jacobson, Debra J., Fan, Chun , St Sauver, Jennifer, DeJesus, R S , Sauver, Jennifer L. St.

Journal of Primary Care & Community Health | January 6, 2022 | Volume: 13 | Issue: No issue available | Pages: No page available

10.1177/21501319211068632 Get It

Objective: This study determined the incidence rates for obesity among adult patients ages 20 and older empaneled in primary care practice in Midwest United States to potentially identify an optimum timeframe for initiating intervention. Background: Primary care practice patients are likely to reflect underlying community trends in overweight and obesity; however, data on overweight and obesity in primary care patients is limited. While childhood incidence rates of obesity have been well reported, there is still a paucity of data on the incidence of obesity among adult population; literature has mainly focused on its prevalence. Methods: Medical record review of identified cohort with BMI data was conducted. Population was stratified by age and sex and overweight category was subdivided into tertiles. Results: Majority of 40 390 individuals who comprised the final population and had follow-up data, consisted of adults ages 40 to 69 years (47.5%), female (59.8%) of non-Hispanic ethnicity (95.9%) with 21 379 (52.8%) falling in weight category of overweight. Incidence of obesity was 7% at 1 year and 16% at 3 years follow-up. Highest percentages of individuals who became obese at 1 and 3 years were in age category of 40 to 69 years among men and 20 to 39 years among women. In Cox regression analysis, there was statistically significant association to developing obesity among all tertile groups in the overweight category. Age and particularly gender appeared to be modifying factors to likelihood of developing obesity. Conclusion: Study results suggest that while obesity incidence is higher among certain age groups in both genders, middle-aged women, and men in all tertiles of overweight category are at highest risk and may be the optimum population to target for weight loss interventions. Findings support the initiation of population-based interventions before onset of obesity.
S0341 An Examination of Socioeconomic and Racial/Ethnic Disparities Within Awareness, Knowledge and Utilization of Three Colorectal Cancer Screening Modalities
Parks, Philip D. , Fan, Chun , Jacobson, Debra J., Jenkins, Gregory D. , Zhu, Xuan , Weiser, Emily, Griffin, Joan M. , Limburg, Paul J. , Rutten, Lila J. Finney

American Journal of Gastroenterology | October 24, 2020 | Volume: 115 | Issue: 1 | Pages: S166-S167

10.14309/01.ajg.0000703412.62456.0e Get It

S0336 Healthcare Provider Perspectives on Lowering Colorectal Cancer Screening Initiation Age to 45 Years
Parks, Philip D. , Fan, Chun , Jacobson, Debra J., Jenkins, Gregory D. , Rutten, Lila J. Finney , Weiser, Emily, Zhu, Xuan , Griffin, Joan M. , Limburg, Paul J.

American Journal of Gastroenterology | October 24, 2020 | Volume: 115 | Issue: 1 | Pages: S164-S164

10.14309/01.ajg.0000703392.13830.3e Get It

Multimorbidity, functional limitations, and outcomes: Interactions in a population-based cohort of older adults
Chamberlain, Alanna M. , Jacobson, Debra J., Fan, Chun , Wilson, Patrick M. , Rocca, Walter A. , Roger, Véronique L. , St Sauver, Jennifer L, Chamberlain, Alanna M , Rutten, Lila J. Finney , Sauver, Jennifer L. St.

Journal of Comorbidity | September 9, 2019 | Volume: 9 | Issue: No issue available | Pages: No page available

10.1177/2235042x19873486 Get It

Objective: To understand the interaction of multimorbidity and functional limitations in determining health-care utilization and survival in older adults. Methods: Olmsted County, Minnesota, residents aged 60–89 years in 2005 were categorized into four cohorts based on the presence or absence of multimorbidity (≥3 chronic conditions from a list of 18) and functional limitations (≥1 limitation in an activity of daily living from a list of 9), and were followed through December 31, 2016. Andersen–Gill and Cox regression estimated hazard ratios (HRs) for emergency department (ED) visits, hospitalizations, and death using persons with neither multimorbidity nor functional limitations as the reference (interaction analyses). Results: Among 13,145 persons, 34% had neither multimorbidity nor functional limitations, 44% had multimorbidity only, 4% had functional limitations only, and 18% had both. Over a median follow-up of 11 years, 5906 ED visits, 2654 hospitalizations, and 4559 deaths occurred. Synergistic interactions on an additive scale of multimorbidity and functional limitations were observed for all outcomes; however, the magnitude of the interactions decreased with advancing age. The HR (95% confidence interval) for death among persons with both multimorbidity and functional limitations was 5.34 (4.40–6.47) at age 60–69, 4.16 (3.59–4.83) at age 70–79, and 2.86 (2.45–3.35) at age 80–89 years. Conclusion: The risk of ED visits, hospitalizations, and death among persons with both multimorbidity and functional limitations is greater than additive. The magnitude of the interaction was strongest for the youngest age group, highlighting the importance of interventions to prevent and effectively manage multimorbidity and functional limitations early in life.