Findings from this study suggest a high overall burden of CRD among individuals treated for thoracic cancers at a rural oncology clinic, with increasing prevalence after the onset of the COVID-19 pandemic. Distress in this population was most commonly related to practical, emotional and physical concerns, including difficulty understanding treatment options, fear and worry about the future, fatigue, and sleep concerns. Notably, patients treated during the pandemic were more likely to experience CRD related to emotional and physical concerns compared to those treated in the year before the pandemic. CRD related to social concerns was less commonly reported, and the prevalence of social concerns did not change during the pandemic. Finally, a higher severity of CRD, and severity of distress related to practical concerns specifically, was reported during compared to before the pandemic.
The high prevalence of CRD among rural cancer survivors in this study is consistent with results from prior studies, which have observed a higher burden of psychosocial distress among rural cancer survivors compared to their urban counterparts [22, 23]. Consistent with these findings, the prevalence of psychosocial distress in our study was higher than that reported in other oncology settings [30, 31, 32]. Importantly, our findings also suggest that COVID-19 may have had a significant impact on psychosocial distress of rural-dwelling patients with cancer. These findings are consistent with results from a rapid review of 15 articles, which observed disproportionate psychosocial consequences of COVID-19 among individuals treated for cancer in rural regions [23]. Our results also align with previous studies demonstrating the adverse impact of the COVID-19 pandemic on health-related quality of life among rural cancer survivors [25, 33]. Conversely, a study comparing urban and rural cancer populations in Utah did not observe any significant differences in psychosocial distress indicators of social interactions, loneliness, financial strain, or accumulating difficulties after the onset of COVID-19 [24]. Moreover, no significant changes in psychosocial distress were observed after the onset of COVID-19 among individuals treated for breast cancer at an urban hospital in Germany [25, 34]. Discrepancies in findings across studies may be due to differences in access barriers across geographical locations [25], and/or differences in cancer site, and social determinants of health, which could differentially impact experienced distress and quality of life measures [9, 11, 29, 35].
Our findings build on results from prior studies by providing nuanced insight into the specific factors contributing to the higher burden of CRD among individuals treated for thoracic cancer in rural settings. The most commonly reported CRD concerns in our study population included depression, problems with breathing, fatigue and sleep problems, feeling dependent on others, and fears and worries about the future. These findings are generally consistent with results from a prior multicenter study conducted in Germany [31], although practical issues like transportation difficulties were notably higher in our rural study population. Importantly, over 70% of patients in this study reported problems understanding treatment options. This high burden may reflect the complexity of treatment associated with thoracic oncology [36], low health literacy [37], and the lack of supportive and educational resources for patient education in rural oncology settings [37]. Taken together, our findings regarding the prevalence of these key concerns contributing to CRD should be prioritized as areas of need for supportive care services in under-resourced rural oncology settings.
In our study, most specific problems related to CRD did not change during the pandemic period. However, several significant differences across time points were observed. The higher proportion of patients reporting needing help with daily tasks, other financial concerns, and fears and worries about the future during the pandemic are somewhat unsurprising given the well-described challenges associated with social distancing and fears surrounding the novel COVID-19 virus. Our findings that fewer participants reported feelings of losing control of things that mattered, problems related to work or school and concerns related to expressing choices about medical care during than before the pandemic onset, may be partially attributable to implications of the pandemic on daily life, including flexible work arrangements[38], and on collective values and perspectives in a time of tremendous uncertainty [39]. Interestingly, we observed an unexpected higher proportion of patients reporting changes in urination during vs. before the pandemic; although the proportion of patients reporting these symptoms was somewhat minimal (i.e., < 15%). COVID-19 has been linked to urinary incontinence in several small studies [29, 40]; though we did not have information on COVID-19 infection status in this study population. Comparable to findings from another study of rural cancer survivors [41], we did not observe changes in depression after the onset of the pandemic. However, it is important to recognize that the prevalence of depression in our study population (~ 37%) was higher than the average in the general population, which ranges from 8–24%.32 Moreover, findings from several other studies have suggested increases in mental health problems in response to the pandemic [30, 35]. The discrepancy in findings across studies is likely multifactorial, and may be influenced by differences in perceptions of infection risk and control, cancer treatment discontinuation and quarantine regimens [18, 42, 43]. Additional research is needed to more comprehensively understand the potential short- and long-term consequences of the pandemic on cancer-related psychosocial distress measures.
The prevalence of CRD in our study population did not differ based on participant characteristics, except for age differences in physical concerns. For example, most participants reported physical concerns across all age groups, but the prevalence was higher in those between 50 and 74 years of age. Some of the physical concerns assessed in this study are associated with older age (e.g., memory or concentration)[44], although it is unclear why physical concerns would be less common in both the youngest and oldest age groups. Given the exploratory nature of this study, and the relatively small sample size, further research is needed to confirm this finding. We did not observe any significant gender differences in the prevalence of CRD, which differs from the findings of Mehnert et al., where women were more likely to report nearly every physical and CRD indicator on the NCCN problem list [31]. Discrepancy in findings may be due to our focus only on thoracic oncology patients, or because we categorized problems by type in our analysis, instead of considering gender differences across each individual problem measure. Although the average distance traveled to the cancer center for this rural population exceeded that of urban dwellers (8 miles) [41], and may contribute to increased burden, we did not observe any differences in psychosocial distress prevalence with increased distance traveled to receive oncology care in this study.
Strengths of this study include the focus on rural cancer survivors, an under-resourced population facing persistent disparities in cancer outcomes, and substantial healthcare access barriers that were heightened during the COVID-19 pandemic [45,46]. Furthermore, the survey used in this study was based on the widely recognized and validated NCCN distress problem list, which facilitates comparative findings across other studies of cancer survivors [47,48]. There were, however, several limitations to this study. The timing of the NCCN distress survey assessment varied across study participants and across the cancer care continuum. This variation may have influenced the degree of distress reported by individuals, with prior studies suggesting heightened distress within the first month post-diagnosis [48]. We also did not have information on socioeconomic indicators, cancer treatment or COVID-19 infection status in this study, which could have significantly influenced CRD measures. Finally, given that this study was conducted at a single rural oncology center and included a relatively small sample size of individuals treated for thoracic cancers, findings may not be generalizable in other settings or populations.
In summary, findings from this study demonstrate a significant and increasing burden of CRD among rural Michigan thoracic oncology patients treated during the COVID-19 pandemic. These findings underscore the potential impact of the pandemic on cancer-related distress and can inform targeted strategies to allocate limited resources to reduce the burden of CRD in underserved populations. Potential strategies to address the complex psychosocial challenges facing individuals treated for cancer in rural settings include using telemedicine approaches to address transportation barriers [49], fostering community-academic partnerships to extend the reach of evidence-based psychosocial interventions [50], and expanding access to supportive care services and palliative care in rural oncology settings [51]. Additional etiologic research is necessary to identify root causes of geographic differences in cancer-related psychosocial distress during the COVID-19 pandemic.