Health Beliefs and Adherence to Lung Cancer Screening in a Diverse Safety-Net Population

BACKGROUND: Lung cancer screening (LCS) with low-dose CT (LDCT) remains markedly underutilized. Prior studies suggest that perceptions regarding LCS may influence intention to undergo LDCT; however, little is known about these beliefs and behaviors in vulnerable populations. We examined LCS-related health beliefs and LDCT completion in an urban safety-net health care system. PATIENTS AND METHODS: We surveyed English- and Spanish-speaking individuals between February 2017 and February 2019 who had been scheduled for, but had not yet undergone, an initial LDCT. Survey items were adapted from validated measures, including the Lung Cancer Screening Health Belief Scales and the Lerman Breast Cancer Worry Scales, to assess LCS-related beliefs and lung cancer-related worry. We examined associations between these factors and LDCT completion using 2-sample t tests and chi-square tests. RESULTS: Among 447 eligible individuals, 411 participated in the survey (71% from racial/ethnic minoritized groups), of whom 339 (82%) completed the initial LDCT. Almost half believed that they were at risk for lung cancer in their lifetime, and >90% believed that LCS would help find lung cancer early. Higher self-efficacy scores and lower perceived barriers scores were associated with LDCT completion (P=.002 and P=.004, respectively). Perceived risk and benefit scores were not associated with LDCT completion. Individuals who did not complete the first LDCT were more likely to note fear of lung problems (33% vs 18%; P