Disparities in lung cancer screening in a diverse urban population and the impact of a community-based navigational program.
Authors: Khan Hina , Ramphal Kristy , Motia Morgan , Fhon Maria , Mudge Jonathan , Pacheco Cristina , Safran Howard , Azzoli Christopher G. 
Published: June 2023

6555 Background: Lung cancer (LC) is the leading cause of cancer death in the US in both men and women; causing 25% of all cancer deaths. Annual lung cancer screening (LCS) with a low-dose CT (LDCT) in high-risk individuals (aged 50-80 with a >20 pack-year smoking history) decreases LC deaths by 20% and is recommended by USPSTF. Despite the efficacy, uptake of LDCT remains low at 6% nationally, and 13% in Rhode Island. Patient (pt) and provider perceived barriers, along with racial, ethnic and socioeconomic disparities widen the gap. We evaluated the implementation of a LCS navigation program at an urban community health center (CHC) with a multiethnic, socioeconomically underserved population. Methods: A bilingual (English and Spanish speaking) pt navigator was integrated into routine clinic practice at a large primary care CHC group, across 4 sites, starting in January 2022. The navigator’s role was to assess pt and provider awareness of the LCS process, assess for systemic barriers, and provide navigational support for the LDCT process. Pts eligible for LCS at the CHC from 1/2022 to 12/2022 were retrospective examined; 50 to 80 years and a >20 pack-year smoking history. The navigator administered a questionnaire to assess barriers to LDCT and demographic variables. Results: A total of 360 eligible pts were seen across the CHC practice in 2022, of which 149 (41.4%) agreed to undergo LDCT after counseling and shared decision making and 28% of these (n 101) completed LDCTs. 153 of the eligible pts completed the survey questionnaire. Of these, 50% were females; 40% were Hispanic/Latinx, 40% were non-Hispanic/Latinx and 22% declined to answer. Majority, 61% were white, 10% African American/Black and 28% declined to answer. A sizeable proportion were non-English speaking (34%) and resided in cities with Rhode Island’s lowest per-capita incomes (Pawtucket 48%), Central Falls (32%) and North Providence/Providence (10%). In assessing barriers to LCS, 46% of pts were not aware of the LCS process and 44% were unaware that LCS was covered by health insurance; 58% of eligible pts did not recall their PCP discussing LCS. Of the LDCTs resulted available at the time of analysis, 84% were Lung RADS-1 and 16% Lung RADS-4 category. Conclusions: Our study highlights the unique barriers to LCS in an urban multiethnic community. While access to LCS remains an issue, pt awareness of the lung cancer screening process was the major barrier. A patient navigation program is critical to the success of LCS in a community, by providing education to patients and providers and the necessary logistical support needed in the LDCT process. With a community based navigational program, we demonstrate a significant increase in lung cancer screening rates in our population to 28% as compared to the state LCS rate of 13%. (Supported by the Robert A. Winn Diversity in Clinical Trials Career Development Award).