Equity

Program in Health Equity Research Publications

More US Pharmacies Closed Than Opened In 2018–21; Independent Pharmacies, Those In Black, Latinx Communities Most At Risk

Jenny Guadamuz
G. Caleb Alexander
Genevieve P. Kanter
Dima Qato
2024
Abstract:

In recent years, federal and state policy makers have expressed concern about retail pharmacy closures throughout the US. However, there is a dearth of timely information on the extent of such closures. We linked data from the National Council for Prescription Drug Programs on all US retail pharmacies to county-level data from the National Center for Health Statistics and ZIP Code Tabulation Area data from the American Community Survey to determine the number and percentage of pharmacy closures during the period 2010–21; identify pharmacy, neighborhood, and market characteristics...

More US Pharmacies Closed Than Opened in 2018-21; Independent Pharmacies, Those in Black, Latinx Communities Most at Risk

December 17, 2024

In recent years, federal and state policy makers have expressed concern about retail pharmacy closures throughout the US. However, there is a dearth of timely information on the extent of such closures. CHAMP faculty member Jenny Guadamuz and coauthors linked data from the National Council for Prescription Drug Programs on all US retail pharmacies to county-level data from the National Center for Health Statistics and ZIP Code Tabulation Area data from the American Community Survey to determine the number and percentage of pharmacy closures during the period 2010–21; identify...

Examining the Associations Among Treatment Declination, Racial and Ethnic Inequities, and Breast Cancer Survival

Gregory Calip
Kent Hoskins
Jenny Guadamuz
2024

Minoritized racial and ethnic populations, including American Indian and Alaska Native, Asian and Pacific Islander, Black, and Hispanic communities, endure complex and persistent inequities in breast cancer outcomes. Socioeconomic factors, limited health care access, cultural and linguistic barriers, along with environmental factors, all contribute to disparities in breast cancer prevention, screening, treatment, and survivorship. Although disparities in breast cancer treatment have been well documented,...

Broadening Eligibility Criteria and Diversity among Patients for Cancer Clinical Trials

Maneet Kaur
Filip Frahm
Yichen Lu
Mustafa Ascha
Jenny Guadamuz
Efrat Dotan
Adam S. Gottesman
Barry C. Leybovich
Arjun Sondhi
Yihua Zhao
Neal J. Meropol
Trevor Royce
2024

Background

Certain populations have been historically underrepresented in clinical trials. Broadening eligibility criteria is one approach to inclusive clinical research and achieving enrollment goals. How broadened trial eligibility criteria affect the diversity of eligible participants is unknown.

Methods

Using a nationwide electronic health record–derived deidentified database, we identified a retrospective cohort of patients diagnosed with 22 cancer types between April 1, 2013 and December 31, 2022 who received systemic therapy (N=...

Racial and Ethnic Inequities in US Oncology Clinical Trial Participation From 2017 to 2022

Harlan Pittell
Gregory Calip
Amy Pierre
2023

Importance There is increasing recognition from regulatory agencies that racial and ethnic representation in clinical trials is inadequate and linked to health inequities. The extent of racial inequities in clinical trial participation is unclear because prior studies have synthesized enrollment data from published trials, which often do not report participant race and ethnicity.

Objective To evaluate racial and ethnic inequities in oncology clinical trial participation in a contemporary cohort of patients with cancer before and...

Risk of contralateral breast cancer among Asian/Pacific Islander women in the United States

Hsiao-Ching Huang
Jenny Guadamuz
Kent Hoskins
Naomi Ko
Gregory Calip
2023

Purpose

While breast cancer studies often aggregate Asian/Pacific Islander (API) women, as a single group or exclude them, this population is heterogeneous in terms of genetic background, environmental exposures, and health-related behaviors, potentially resulting in different cancer outcomes. Our purpose was to evaluate risks of contralateral breast cancer (CBC) among subgroups of API women with breast cancer.

Methods

We conducted a retrospective cohort study of women ages 18 + years diagnosed with stage I–III breast cancer between...

Sociodemographic Inequities in Telemedicine Use Among US Patients Initiating Treatment in Community Cancer Centers During the Ongoing COVID-19 Pandemic, 2020-2022

Jenny Guadamuz
Xiaoliang Wang
Trevor Royce
Gregory Calip
2023

Purpose

Although telemedicine was seen as a way to improve cancer care during the coronavirus disease (COVID-19) pandemic, there is limited information regarding inequities in its uptake. This study assessed sociodemographic factors associated with telemedicine use among patients initiating treatment for 20 common cancers.

Methods

This retrospective cohort study used deidentified electronic health record–derived patient data from a nationwide network of community cancer practices, linked to area-level Census information. We included...

Socioeconomic status and inequities in treatment initiation and survival among patients with cancer, 2011-2022

Jenny Guadamuz
Xiaoliang Wang
Cleo Ryals
Rebecca Miksad
Jeremy Snider
James Walters
Gregory Calip
2023
Background

Lower neighborhood socioeconomic status (SES) is associated with suboptimal cancer care and reduced survival. Most studies examining cancer inequities across area-level socioeconomic status tend to use less granular or unidimensional measures and pre-date the COVID-19 pandemic. Here, we examined the association of area-level socioeconomic status on real-world treatment initiation and overall survival among adults with 20 common cancers.

Methods

This retrospective cohort study used electronic health record–derived deidentified data (...

Evaluating External Validity of Oncology Biosimilar Safety Studies

Gregory Calip
Ivy Altomare
Jenny Guadamuz
2023

Biologics are the fastest growing medication class in the US and account for an increasing portion of health care costs. In the US, the Biologics Price Competition and Innovation Act of 2009 created an abbreviated approval pathway to expand access to safe and effective biological products.1 Pivot et al2 report the...

Changes in HIV Pre-exposure Prophylaxis (PrEP) Coverage at State and County Level During the COVID-19 Pandemic in the United States

Mahdi Fallahi
Jenny Guadamuz
Dima Qato
2023

This study quantifies the prevalence and trends in weekly PrEP coverage at the national, state and county-level, before and during the COVID-19 pandemic in the United States.We estimated weekly PrEP coverage using longitudinal individual-level pharmacy claims from IQVIA LRx for a cohort of PrEP users (N = 287,493) ages 16 to 85 years between December 29th, 2019 and November 8th, 2020. Weekly PrEP coverage was defined as PrEP use among individuals at high risk for HIV. We conducted an interrupted time series analysis to quantify changes in weekly PrEP coverage before (December 29th,...