Journal
CONTEMPORARY CLINICAL TRIALS COMMUNICATIONS
Volume 24, Issue -, Pages -Publisher
ELSEVIER INC
DOI: 10.1016/j.conctc.2021.100860
Keywords
Fibromyalgia; Underrepresented population; Clinical trials participation; Recruitment; Therapeutic adherence and compliance
Categories
Funding
- National Institutes of Health [R01 AT009491-01A1]
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Fibromyalgia is a complex pain condition that predominantly affects women, leading to poor adherence to medication and mistrust of medical services due to a lack of understanding. This study focused on recruitment characteristics and non-adherence factors among fibromyalgia patients in an RCT. Findings showed that about 38% of patients were non-adherent to the protocol, with significant factors including anxiety levels, Body Mass Index (BMI), and Quality of Life (QoL).
Introduction: Fibromyalgia is a complex pain condition that affects mostly women. Given the disease's lack of understanding, patients report poor adherence to medication and mistrust of medical services. This study aims to describe the recruitment characteristics and non-adherence associated factors of fibromyalgia patients to an RCT. Methods: We performed a retrospective longitudinal analysis with data from our ongoing RCT. We investigated characteristics of subjects recruited, consented, and randomized. Adherence was studied using survival analysis techniques, and its associated factors were identified using Cox proportional hazards regression model. Results: 524 subjects were contacted, 269 were eligible, 61 consented and 40 subjects were randomized. Thirty-eight percent were non-adherent to the protocol with a median of visits of five. The recruitment survey reported that 90% would likely participate in RCTs, 52% had previous participation, and 19% were aware of RCTs by their physicians. Some barriers were investigator-related (staff's friendliness and receiving the results of their trial participation) and center-related (privacy-confidentiality issues and the institution's reputation), without difference between adherent and non-adherent participants. We report significant factors for non-adherence as VAS anxiety score of 5 or more (5.3 HR, p = 0.01), Body Mass Index (BMI) (0.91 HR, p = 0.041) and Quality of Life (QoL) - Personal development subdomain (0.89 HR, p = 0.046). Conclusion: Recruitment and adherence of fibromyalgia patients is a challenge; however, they seem eager to participate in RCTs. We recommend creating a comfortable, friendly and trusting environment to increase the recruitment rate. Higher anxiety, lower BMI and lower quality of life were associated with a higher attrition rate.
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