Yamisha Bermudez

Dr. Yamisha Bermudez

Cancer Prevention and Control, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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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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1 January 2017 in Annals of Epidemiology
Verified
Journal Article
Open access
LMLee Mobley
Lee Mobley
LSLia Scott
Lia Scott
YBYamisha Bermudez
Yamisha Bermudez
TKTzy-Mey Kuo
Tzy-Mey Kuo
Studies have found a variety of evidence regarding the association between residential segregation measures and health outcomes in the United States. Some have focused on any individuals living in residentially segregated places, whereas others have examined whether persons of specific races or ethnicities living in places with high segregation of their own race or ethnicity have differential outcomes. This article compares and contrasts these two approaches in the study of predictors of late-stage colorectal cancer (CRC) diagnoses in a cross-national study. We argue that it is very important when interpreting results from studies like this to carefully consider the geographic scope of the analysis, which can significantly change the context and meaning of the results. We use US Cancer Statistics Registry data from 40 states to identify late-stage diagnoses among over 500,000 CRC cases diagnosed during 2004-2009. We pool data over the states and estimate a multilevel model with person, county, and state levels and a random intercepts specification to ensure robust effect estimates. The isolation index of residential segregation is defined for racial and ethnic groups at the county level using Census 2000 data. The association between isolation indices and late-stage CRC diagnosis was measured by (1) anyone living in minority-segregated areas (place-centered approach) and by (2) individuals living in areas segregated by one's own racial or ethnic peers (person-centered approach). Findings from the place-centered approach suggest that living in a highly segregated African American community is associated with lower likelihood of late-stage CRC diagnosis, whereas the opposite is true for people living in highly segregated Asian communities, and living in highly segregated Hispanic communities has no significant association. Using the person-centered approach, we find that living in places segregated by one's racial or ethnic peers is associated with lower likelihood of late-stage CRC diagnosis. In a model that covers a large geographic area across the nation, the place-centered approach is most likely picking up geographic disparities that may be deepened by targeted interventions in minority communities. By contrast, the person-centered approach provides a national average estimate suggesting that residential isolation may confer community cohesion or support that is associated with better CRC prevention.

LMLee Mobley
Lee Mobley
TKTzy-Mey Kuo
Tzy-Mey Kuo
LSLia Scott
Lia Scott
YBYamisha Bermudez
Yamisha Bermudez
SBSrimoyee Bose
Srimoyee Bose
In the US, about one-third of new breast cancers (BCs) are diagnosed at a late stage, where morbidity and mortality burdens are higher. Health outcomes research has focused on the contribution of measures of social support, particularly the residential isolation or segregation index, on propensity to utilize mammography and rates of late-stage diagnoses. Although inconsistent, studies have used various approaches and shown that residential segregation may play an important role in cancer morbidities and mortality. Some have focused on any individuals living in residentially segregated places (place-centered), while others have focused on persons of specific races or ethnicities living in places with high segregation of their own race or ethnicity (person-centered). This paper compares and contrasts these two approaches in the study of predictors of late-stage BC diagnoses in a cross-national study. We use 100% of U.S. Cancer Statistics (USCS) Registry data pooled together from 40 states to identify late-stage diagnoses among ~1 million new BC cases diagnosed during 2004–2009. We estimate a multilevel model with person-, county-, and state-level predictors and a random intercept specification to help ensure robust effect estimates. Person-level variables in both models suggest that non-White races or ethnicities have higher odds of late-stage diagnosis, and the odds of late-stage diagnosis decline with age, being highest among the <age 50 group. After controlling statistically for all other factors, we examine place-centered isolation and find for anyone living in an isolated Asian community there is a large beneficial association (suggesting lower odds of late-stage diagnosis) while for anyone living in an isolated White community there is a large detrimental association (suggesting greater odds of late-stage diagnosis). By contrast, living in neighborhoods among others of one’s own race or ethnicity (person-centered isolation) is associated with greater odds of late-stage diagnosis, as this measure is dominated by Whites (the majority). At the state level, living in a state that allows unfettered access to a specialist is associated with a somewhat lower likelihood of being diagnosed at a late stage of BC. Geographic factors help explain the likelihood of late-stage BC diagnosis, which varies considerably across the U.S. as heterogeneous compositional and contextual factors portray very different places and potential for improving information and outcomes. The USCS database is expanding to cover more states and is expected to be a valuable resource for ongoing and future place-based cancer outcomes research.

15 September 2022 in Preventing Chronic Disease
Verified
Journal Article
Open access
YBYamisha Bermudez
Yamisha Bermudez
LSLia C. Scott
Lia C. Scott
MBMichele Beckman
Michele Beckman
ADAmy DeGroff
Amy DeGroff
KKKristy Kenney
Kristy Kenney
LRLisa C. Richardson
Lisa C. Richardson
Preventing Chronic Disease (PCD) is a peer-reviewed electronic journal established by the National Center for Chronic Disease Prevention and Health Promotion. PCD provides an open exchange of information and knowledge among researchers, practitioners, policy makers, and others who strive to improve the health of the public through chronic disease prevention.

1 May 2016 in Journal Of Health Care For The Poor and Underserved
Verified
Journal Article
Closed access
ARAlyssa G. Robillard
Alyssa G. Robillard
RHRhonda C. Holliday
Rhonda C. Holliday
DDDana D. DeHart
Dana D. DeHart
KLKaleea Lewis
Kaleea Lewis
YBYamisha Bermudez
Yamisha Bermudez
NANdidi N. Amutah
Ndidi N. Amutah
Adolescent children of incarcerated mothers (ACIM) are typically left in the care of adults (primary caregivers) who play a crucial role in children's care and guidance, as well as in the facilitation of contact and communication with incarcerated mothers. The purpose of this study was to explore the nature of relationships and communication among adolescent children of incarcerated mothers, primary caregivers, and incarcerated mothers using pilot data. Semi-structured individual interviews were conducted with youth aged 12-17 (n=7) and caregivers (n=6) recruited through a non-profit organization working with incarcerated mothers and their children. Incarcerated mothers and primary caregivers represent an important family unit for ACIMs and may play a role in preventing risk behavior. A conceptual framework is offered for further consideration of mother and caregiver communication with youth and youth risk.

1 June 2020 in Annals of Cancer Epidemiology
Verified
Journal Article
Open access
PDF file
YBYamisha Bermudez
Yamisha Bermudez
LMLee R. Mobley
Lee R. Mobley
Background: Despite known effectiveness of Pap screening in detecting precancerous cells before developing into cancer, 51% of women with cervical cancer (CVC) are diagnosed at a late stage (regional or distant). Previous epidemiological surveillance indicates that the burden of late stage CVC varies widely between states in the US. However, little is known about the spatial clustering of county-level late stage CVC rates across the total US. Examining county as opposed to state-level data will help us to identify highly burdened places that are potentially masked when using aggregated state-level data. In addition, examining spatial clusters as opposed to simple geographic distributions of high and low proportions of late stage CVC will allow us to generate and test hypotheses regarding underlying risk factors that may be common to counties within adjacent states. Methods: This cross-sectional study includes CVC cases diagnosed during the ten-year period from 2005–2014 from the United States Cancer Statistics (USCS) database. Using CVC data among 43 states and their 2,357 constituent counties in the US, we employ Empirical Bayes (EB) LISA tests to identify clusters of counties considered to be high risk “hotspots” and clusters of counties considered to be low risk “coolspots,” during two time periods, pre and post the implementation of the Patient Protection and Affordable Care Act (ACA) in 2010. Using a series of t-tests and co-location mapping, we also assess whether the hotspots identified in both time periods are associated with various contextual and compositional factors and whether geographic hotspots persist over both time periods. Results: The proportion of CVC cases diagnosed at a late stage has increased from 47% to 54% over time. There were also substantial changes in the number and distribution of clusters over time and the distribution of county-specific hotspots were not consistent with the state-level burden of late stage CVC identified in previous literature. Over time, higher concentrations of Black women were associated with hotspot clusters and access to care barriers became primary drivers of clusters of higher proportions of late stage CVC diagnoses. Conclusions: Study results demonstrate that there are both geographic and demographic disparities in late stage CVC. Without further investigation into these relationships we cannot adequately inform late stage CVC interventions in the US. As a result, the overall proportion of late stage CVC in the US is likely to remain high and at a disproportionately higher rate among African American and Hispanic women and women in the identified hotspot clusters across the US.

19 September 2018 in Journal of Racial and Ethnic Health Disparities
Verified
Journal Article
Closed access
PDF file
LMLee Mobley
Lee Mobley
TKTzy-Mey Kuo
Tzy-Mey Kuo
MZMei Zhou
Mei Zhou
YBYamisha Bermudez
Yamisha Bermudez
SMSeth Meador
Seth Meador
JKJulia Koschinsky
Julia Koschinsky