Tracy Onega
Dados Biográficos
| ID | 4426746 |
|---|---|
| NOME | Tracy Onega |
| PRENOMES | Tracy |
| SOBRENOME | Onega |
| ASSINATURA | ONEGA T |
| AFILIAÇÕES | Dartmouth College |
| ORCID | 0000-0002-1633-3040 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 20 |
| TOTAL DE CITAÇÕES | 8 |
| TOTAL COMO AUTOR | 20 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2010 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2025 |
| ÍNDICE H | 2 |
A novel approach to incorporate frontier areas into urban–rural geographic classifications
PURPOSE: To develop an urban-rural-frontier classification that integrates urbanicity and geographic remoteness and captures nuances in population and land area distributions invisible in traditional coding schemes, thereby providing a framework to measure health outcomes and access to care across the full urban-to-frontier continuum. METHODS: We created tract-level Integrated Metropolitan-to-Frontier Area Codes (tIMFAC) by combining the US Depar…
Travel burden and bypassing closest site for surgical cancer treatment for urban and rural oncology patients
PURPOSE: We examined the relationship between travel burden for surgical cancer care and rurality, geographic bypass of the nearest surgical facility, cancer type, and mortality outcomes. METHODS: Using Medicare claims and enrollment data (2016-2018) from beneficiaries with cancer of the colon, rectum, lung, or pancreas, we measured travel times to: the nearest surgical facility and facility used. For those who bypassed the nearest, we examined t…
Community navigation intervention for social needs in patients with abnormal mammography
The study was pre-registered at ClinicalTrials.gov on March 12, 2024, under identifier NCT06305312
A multi-constraint Monte Carlo Simulation approach to downscaling cancer data
Development of the Rural Perception Scale (RPS‐18)
BACKGROUND: People living in rural areas often experience limited access to health resources, slow knowledge diffusion, and geographical isolation, and tend to be at higher risk for poor physical and mental health outcomes compared with nonrural populations. It is unclear, yet, how the concept of "rural" shapes observed differences from nonrural populations. We aim to develop a psychometrically sound scale to assess key dimensions that constitute…
Disparities in spatial accessibility of primary care in Louisiana
Telehealth has been widely employed and has transformed how healthcare is delivered in the United States as a result of COVID-19 pandemic. While telehealth is utilized and encouraged to reduce the cost and travel burden for access to healthcare, there are debates on whether telehealth can promote equity in healthcare services by narrowing the gap among diverse groups. Using the Two-Step Floating Catchment Area (2SFCA) and Two-Step Virtual Catchme…
The interaction of rurality and rare cancers for travel time to cancer care
PURPOSE: Geographic access to cancer care is known to significantly impact utilization and outcomes. Longer travel times have negative impacts for patients requiring highly specialized care, such as for rare cancers, and for those in rural areas. Scant population-based research informs geographic access to care for rare cancers and whether rurality impacts that access. METHODS: Using Medicare data (2014-2015), we identified prevalent cancers and …
Refining 2SVCA method for measuring telehealth accessibility of primary care physicians in Baton Rouge, Louisiana
Impact of the Covid‐19 pandemic on rural and urban cancer patients' experiences, health behaviors, and perceptions
PURPOSE: The COVID-19 pandemic has disrupted many facets of life. We evaluated pandemic-related health care experiences, COVID-19 prevention behaviors and measures, health behaviors, and psychosocial outcomes among rural and urban cancer patients. METHODS: Among 1,472 adult cancer patients, who visited Huntsman Cancer Institute in the past 4 years and completed a COVID-19 survey (August-September 2020), we assessed the impact of the pandemic on m…
Concordance of Rural‐Urban Self‐identity and ZIP Code‐Derived Rural‐Urban Commuting Area (Ruca) Designation
PURPOSE: This study examined the concordance between individuals' self-reported rural-urban category of their community and ZIP Code-derived Rural-Urban Commuting Area (RUCA) category. METHODS: An Internet-based survey, administered from August 2017 through November 2017, was used to collect participants' sociodemographic characteristics, self-reported ZIP Code of residence, and perception of which RUCA category best describes the community in wh…
Response to a Letter to the Editor Regarding “Concordance of Rural Identity and ZIP Code‐Linked Rural‐Urban Commuting Area (Ruca) Code” Authored by Timothy Plante, Insu Koh, and Andrew Wilcock
An Electronic Health Record–based Algorithm to Ascertain the Date of Second Breast Cancer Events
OBJECTIVES: Studies of cancer recurrences and second primary tumors require information on outcome dates. Little is known about how well electronic health record-based algorithms can identify dates or how errors in dates can bias analyses. RESEARCH DESIGN: We assessed rule-based and model-fitting approaches to assign event dates using a previously published electronic health record-based algorithm for second breast cancer events (SBCE). We conduc…
Breast MRI in the Diagnostic and Preoperative Workup Among Medicare Beneficiaries With Breast Cancer
PURPOSE: We compared the frequency and sequence of breast imaging and biopsy use for the diagnostic and preoperative workup of breast cancer according to breast magnetic resonance imaging (MRI) use among older women. MATERIALS AND METHODS: Using SEER-Medicare data from 2004 to 2010, we identified women with and without breast MRI as part of their diagnostic and preoperative breast cancer workup and measured the number and sequence of breast imagi…
Validation of a Medicare Claims-based Algorithm for Identifying Breast Cancers Detected at Screening Mammography
BACKGROUND: The breast cancer detection rate is a benchmark measure of screening mammography quality, but its computation requires linkage of mammography interpretive performance information with cancer incidence data. A Medicare claims-based measure of detected breast cancers could simplify measurement of this benchmark and facilitate mammography quality assessment and research. OBJECTIVES: To validate a claims-based algorithm that can identify …
Mapping Disease at an Approximated Individual Level Using Aggregate Data
RCMC is an effective method to disaggregate aggregate data. An RCMC-based disease mapping maximizes the use of available spatial information, and explicitly estimates the spatial uncertainty resulting from aggregation
Intended Versus Inferred Management After PET For Cancer Restaging
BACKGROUND: The National Oncologic PET Registry (NOPR) ascertained changes in the intended management of cancer patients using questionnaire data obtained before and after positron emission tomography (PET) under Medicare's coverage with evidence development policy. OBJECTIVE: To assess the concordance between intended care plans and care received as ascertained through administrative claims data. RESEARCH DESIGN: Analysis of linked data of NOPR …
Effects of Digital Mammography Uptake on Downstream Breast-related Care Among Older Women
BACKGROUND: Digital mammography is the dominant modality for breast cancer screening in the United States. No previous studies have investigated as to how introducing digital mammography affects downstream breast-related care. OBJECTIVE: Compare breast-related health care use after a screening mammogram before and after introduction of digital mammography. RESEARCH DESIGN AND SUBJECTS: Longitudinal study of screening mammograms from 14 radiology …
Assessing Health Care Use and Cost Consequences of a New Screening Modality
BACKGROUND: Full-field digital mammography (FFDM) has largely replaced screen-film mammography (SFM) for breast cancer screening, but how this affects downstream breast-related use and costs is unknown. OBJECTIVES: To compare breast-related health care use and costs among Medicare beneficiaries undergoing SFM versus FFDM from 1999 to 2005. DESIGN: Retrospective cohort study. SUBJECTS: Medicare-enrolled women aged 66 and older with mammograms in B…
Spatial Access and Local Demand for Major Cancer Care Facilities in the United States
The Cancer Centers designated by the National Cancer Institute (NCI Centers) and academic medical centers (AMCs) form the “backbone” of the cancer care system in the United States. We conducted a nationwide analysis and generated a high-resolution map detailing spatial variation in the potentially unfulfilled demand for these facilities. A local demand value incorporates spatial access to the facilities and the number of local potential patients.…
Influence of Place of Residence in Access to Specialized Cancer Care for African Americans
CONTEXT: Disparities in cancer care for rural residents and for African Americans have been documented, but the interaction of these factors is not well understood. PURPOSE: The authors examined the simultaneous influence of race and place of residence on access to and utilization of specialized cancer care in the United States. METHODS: Access to specialized cancer care was measured using: (1) travel time to National Cancer Institute (NCI) Cance…
Spatial Access and Local Demand for Major Cancer Care Facilities in the United States
The Cancer Centers designated by the National Cancer Institute (NCI Centers) and academic medical centers (AMCs) form the “backbone” of the cancer care system in the United States. We conducted a nationwide analysis and generated a high-resolution map detailing spatial variation in the potentially unfulfilled demand for these facilities. A local demand value incorporates spatial access to the facilities and the number of local potential patients.…
Refining 2SVCA method for measuring telehealth accessibility of primary care physicians in Baton Rouge, Louisiana
Influence of Place of Residence in Access to Specialized Cancer Care for African Americans
CONTEXT: Disparities in cancer care for rural residents and for African Americans have been documented, but the interaction of these factors is not well understood. PURPOSE: The authors examined the simultaneous influence of race and place of residence on access to and utilization of specialized cancer care in the United States. METHODS: Access to specialized cancer care was measured using: (1) travel time to National Cancer Institute (NCI) Cance…
Effects of Digital Mammography Uptake on Downstream Breast-related Care Among Older Women
BACKGROUND: Digital mammography is the dominant modality for breast cancer screening in the United States. No previous studies have investigated as to how introducing digital mammography affects downstream breast-related care. OBJECTIVE: Compare breast-related health care use after a screening mammogram before and after introduction of digital mammography. RESEARCH DESIGN AND SUBJECTS: Longitudinal study of screening mammograms from 14 radiology …
Assessing Health Care Use and Cost Consequences of a New Screening Modality
BACKGROUND: Full-field digital mammography (FFDM) has largely replaced screen-film mammography (SFM) for breast cancer screening, but how this affects downstream breast-related use and costs is unknown. OBJECTIVES: To compare breast-related health care use and costs among Medicare beneficiaries undergoing SFM versus FFDM from 1999 to 2005. DESIGN: Retrospective cohort study. SUBJECTS: Medicare-enrolled women aged 66 and older with mammograms in B…
Spatial Access and Local Demand for Major Cancer Care Facilities in the United States
The Cancer Centers designated by the National Cancer Institute (NCI Centers) and academic medical centers (AMCs) form the “backbone” of the cancer care system in the United States. We conducted a nationwide analysis and generated a high-resolution map detailing spatial variation in the potentially unfulfilled demand for these facilities. A local demand value incorporates spatial access to the facilities and the number of local potential patients.…
Mapping Disease at an Approximated Individual Level Using Aggregate Data
RCMC is an effective method to disaggregate aggregate data. An RCMC-based disease mapping maximizes the use of available spatial information, and explicitly estimates the spatial uncertainty resulting from aggregation
Intended Versus Inferred Management After PET For Cancer Restaging
BACKGROUND: The National Oncologic PET Registry (NOPR) ascertained changes in the intended management of cancer patients using questionnaire data obtained before and after positron emission tomography (PET) under Medicare's coverage with evidence development policy. OBJECTIVE: To assess the concordance between intended care plans and care received as ascertained through administrative claims data. RESEARCH DESIGN: Analysis of linked data of NOPR …
Breast MRI in the Diagnostic and Preoperative Workup Among Medicare Beneficiaries With Breast Cancer
PURPOSE: We compared the frequency and sequence of breast imaging and biopsy use for the diagnostic and preoperative workup of breast cancer according to breast magnetic resonance imaging (MRI) use among older women. MATERIALS AND METHODS: Using SEER-Medicare data from 2004 to 2010, we identified women with and without breast MRI as part of their diagnostic and preoperative breast cancer workup and measured the number and sequence of breast imagi…
Validation of a Medicare Claims-based Algorithm for Identifying Breast Cancers Detected at Screening Mammography
BACKGROUND: The breast cancer detection rate is a benchmark measure of screening mammography quality, but its computation requires linkage of mammography interpretive performance information with cancer incidence data. A Medicare claims-based measure of detected breast cancers could simplify measurement of this benchmark and facilitate mammography quality assessment and research. OBJECTIVES: To validate a claims-based algorithm that can identify …
An Electronic Health Record–based Algorithm to Ascertain the Date of Second Breast Cancer Events
OBJECTIVES: Studies of cancer recurrences and second primary tumors require information on outcome dates. Little is known about how well electronic health record-based algorithms can identify dates or how errors in dates can bias analyses. RESEARCH DESIGN: We assessed rule-based and model-fitting approaches to assign event dates using a previously published electronic health record-based algorithm for second breast cancer events (SBCE). We conduc…
Concordance of Rural‐Urban Self‐identity and ZIP Code‐Derived Rural‐Urban Commuting Area (Ruca) Designation
PURPOSE: This study examined the concordance between individuals' self-reported rural-urban category of their community and ZIP Code-derived Rural-Urban Commuting Area (RUCA) category. METHODS: An Internet-based survey, administered from August 2017 through November 2017, was used to collect participants' sociodemographic characteristics, self-reported ZIP Code of residence, and perception of which RUCA category best describes the community in wh…
Response to a Letter to the Editor Regarding “Concordance of Rural Identity and ZIP Code‐Linked Rural‐Urban Commuting Area (Ruca) Code” Authored by Timothy Plante, Insu Koh, and Andrew Wilcock
Impact of the Covid‐19 pandemic on rural and urban cancer patients' experiences, health behaviors, and perceptions
PURPOSE: The COVID-19 pandemic has disrupted many facets of life. We evaluated pandemic-related health care experiences, COVID-19 prevention behaviors and measures, health behaviors, and psychosocial outcomes among rural and urban cancer patients. METHODS: Among 1,472 adult cancer patients, who visited Huntsman Cancer Institute in the past 4 years and completed a COVID-19 survey (August-September 2020), we assessed the impact of the pandemic on m…
Disparities in spatial accessibility of primary care in Louisiana
Telehealth has been widely employed and has transformed how healthcare is delivered in the United States as a result of COVID-19 pandemic. While telehealth is utilized and encouraged to reduce the cost and travel burden for access to healthcare, there are debates on whether telehealth can promote equity in healthcare services by narrowing the gap among diverse groups. Using the Two-Step Floating Catchment Area (2SFCA) and Two-Step Virtual Catchme…
The interaction of rurality and rare cancers for travel time to cancer care
PURPOSE: Geographic access to cancer care is known to significantly impact utilization and outcomes. Longer travel times have negative impacts for patients requiring highly specialized care, such as for rare cancers, and for those in rural areas. Scant population-based research informs geographic access to care for rare cancers and whether rurality impacts that access. METHODS: Using Medicare data (2014-2015), we identified prevalent cancers and …
Refining 2SVCA method for measuring telehealth accessibility of primary care physicians in Baton Rouge, Louisiana
Development of the Rural Perception Scale (RPS‐18)
BACKGROUND: People living in rural areas often experience limited access to health resources, slow knowledge diffusion, and geographical isolation, and tend to be at higher risk for poor physical and mental health outcomes compared with nonrural populations. It is unclear, yet, how the concept of "rural" shapes observed differences from nonrural populations. We aim to develop a psychometrically sound scale to assess key dimensions that constitute…
A novel approach to incorporate frontier areas into urban–rural geographic classifications
PURPOSE: To develop an urban-rural-frontier classification that integrates urbanicity and geographic remoteness and captures nuances in population and land area distributions invisible in traditional coding schemes, thereby providing a framework to measure health outcomes and access to care across the full urban-to-frontier continuum. METHODS: We created tract-level Integrated Metropolitan-to-Frontier Area Codes (tIMFAC) by combining the US Depar…
Travel burden and bypassing closest site for surgical cancer treatment for urban and rural oncology patients
PURPOSE: We examined the relationship between travel burden for surgical cancer care and rurality, geographic bypass of the nearest surgical facility, cancer type, and mortality outcomes. METHODS: Using Medicare claims and enrollment data (2016-2018) from beneficiaries with cancer of the colon, rectum, lung, or pancreas, we measured travel times to: the nearest surgical facility and facility used. For those who bypassed the nearest, we examined t…
Community navigation intervention for social needs in patients with abnormal mammography
The study was pre-registered at ClinicalTrials.gov on March 12, 2024, under identifier NCT06305312
A multi-constraint Monte Carlo Simulation approach to downscaling cancer data
Medicine (17 obras) · Internal Medicine (12 obras) · Cancer (11 obras) · Global Cancer Incidence and Screening (9 obras) · Geography (8 obras) · Breast cancer (6 obras) · Cartography (6 obras) · Environmental health (6 obras) · Internal Medicine (6 obras) · Rural area (6 obras)