Complementary and alternative medicine exposure in oncology (CAMEO) study: A multi-institutional cross-sectional analysis of patients receiving cancer treatment.

Abstract

e18739 Background: Compared to standard of care treatments, complementary and alternative medicine (CAM) use has been associated with decreased survival in cancer patients. CAM includes a broad range of treatments including vitamins/minerals, herbs/supplements, special diets, and mind/body interventions. An improved understanding of contemporary prevalence, predictors and intended goals of CAM use is needed to improve the cancer patient experience and guide shared decision-making regarding risks and benefits of their use. Methods: A cross-sectional survey of prospectively enrolled adult cancer patients treated at a large regional non-profit cancer center and an NCI-Designated Comprehensive Cancer Center between 2020 and 2021 was collected. Patients receiving cancer treatment were selected for analysis and grouped based on reported CAM use. Differences between CAM users and nonusers were assessed by chi-squared for categorical and two-sample t-test for continuous variables. Predictors of CAM use were identified with univariable and multivariable logistic regression. Results: Of 749 respondents, 83.31% had heard of or been recommended a CAM. Rates of CAM use during cancer treatment were highest for vitamins/minerals (56%), mind/body (52%), herbs/supplements (38%), special diets (30%), and other (12%). In the most common primary cancers, overall rates of CAM use were high (Breast: 84%, prostate: 66%, lung: 79%). Most patients (91%) use CAM in addition to conventional treatments. The intended goal of CAM therapy was most often management of symptoms (42%), treatment of cancer (30%), and mental health (15%). CAM users were younger than non-users (median age 62 years [y] vs 65y, p = 0.03). Females had higher rates of CAM use compared to males (86% vs. 78%, p < 0.01). Patients with incurable cancer had higher rates of CAM use than those with curable cancer (82% vs. 72%, p < 0.01). Predictors of CAM use on multivariable model include female gender (OR 2.5, p < 0.01) and incurable cancer (OR 2.5, p < 0.01). During cancer treatment, patients using CAM used multiple therapies and therapy types, including an average of 3.3 vitamins/minerals, 3.1 herbs/supplements, 2.5 mind/body exercises, and 1.6 special diets. Conclusions: CAM use is common among cancer patients receiving radiation, chemotherapy, and or surgery. Many patients are taking multiple CAM therapies during treatment with one third of patients using CAM with the intended goal of treating their cancer. This data provides details about and predictors of CAM use and provides information to guide patient-physician discussions.