YOCAS©® Yoga Reduces Self-reported Memory Difficulty in Cancer Survivors in a Nationwide Randomized Clinical Trial: Investigating Relationships Between Memory and Sleep.

"Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article."

"Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: K07CA168886, UCA037420, UCA037420 Supplement, and UG1CA189961."

"This is a secondary analysis of a previously completed trial, of which the primary study results have been published previously. This study was registered with clinical trials.gov (NCT00397930). The URCC CCOP Research Base and 9 CCOPs conducted a nationwide, multicenter, RCT examining the efficacy of yoga for improving sleep quality in adult cancer survivors. Survivors were recruited in cohorts (n = 20-30), stratified by gender and baseline level of sleep disturbance (2 levels: ≤5 or >5 on an 11-point clinical symptom inventory scale anchored by 0 = no sleep disturbance and 10 = worst possible sleep disturbance), and randomly assigned to either a yoga or standard care (SC) control group at each CCOP. Group assignment was determined by a computer-generated random number table in blocks of 2 and 1:1 allocation ratio. The allocation was concealed from the coordinator until after the participant was registered by using a Web site that generated an e-mail to the research base and individual CCOP site. The study primary investigator and biostatistician were blinded to allocation. Institutional review board approval was obtained from the URCC CCOP Research Base and all participating CCOP recruitment sites, and informed consent was obtained from all participants."