Exploring the Prevalence and Factors Influencing Clinical Trial Awareness in US Adults with Self-Reported Depression and Anxiety

Objective: Lack of clinical trial awareness is a crucial barrier to clinical trial enrollment. The objective of this study was to examine the prevalence and factors associated with clinical trial awareness among US adults with self-reported depression and anxiety. Methods: Data were collected from 896 adults who self-reported depression and anxiety from the 2020 Health Information National Trends Survey. Multinomial logistic regression was utilized to assess predictors of clinical trial awareness, particularly socio-demographic, health-related, and technological variables. Odds ratios (OR) for the associations were reported. Results: About 60.4% of adults with self-reported depression or anxiety reported being aware of clinical trials. In the multivariable regression, education level, health-related social media use, and having access to a regular provider were all significantly associated with greater odds of clinical trial awareness among individuals with depression and/or anxiety. Specifically, individuals with at least some college education (OR 2.07, 95% confidence interval (CI); 1.28-3.34; p ​= ​0.004) were more likely to report awareness of clinical trials than those with less than a college education. Similarly, compared to those without access to health providers, individuals with depression and/or anxiety who had a regular provider had greater odds of clinical trial awareness (OR 2.23, 95% CI; 1.16-4.31; p ​= ​0.017). Additionally, those who reported two or more health-related uses of social media were significantly more likely to report clinical trial awareness than their counterparts who reported no health-related social media use (OR 3.17, 95% CI; 1.48-6.80; p ​= ​0.004). Conclusion: Our study shows that about six in 10 adults with depression and anxiety in the United States were aware of clinical trials. However, some sub-groups of patients, particularly those without access to a regular health provider, those with a lower education level, and those with limited use of social media for health purposes, remain inadequately informed and may lack awareness of available clinical trials. These findings are crucial and identify subgroups of people with mental disorders that may benefit from targeted interventions to improve clinical trial awareness.