https://www.selleckchem.com/products/Rapamycin.html RESULTS From baseline to admission, 74.1% increased CFS by ≥1 level. From admission to post-discharge, 61.9% decreased CFS by ≥1 levels. A change in FI score of 0.03 best predicted both one-level CFS increase (sensitivity=70%; specificity=69%) and decrease (sensitivity=66%; specificity=61%) in comparison to no change. Of those who changed CFS by ≥1 levels, 70.9% (baseline to admission) and 72.4% (admission to post-discharge) changed their FI score by at least 0.03. CONCLUSIONS A clinically meaningful change of 0.03 in the frailty index score holds promise as a benchmark for assessing the meaningfulness of frailty interventions. © The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail journals.permissions@oup.com.STUDY OBJECTIVES This pilot RCT was conducted to assess the preliminary effects of Brief Behavioral Therapy for Cancer-Related Insomnia (BBT-CI) delivered by trained research staff in comparison to a sleep hygiene pamphlet control, and to assess moderators of treatment effect in breast cancer patients undergoing chemotherapy. METHODS Of 74 participants recruited, 37 were randomized to BBT-CI and 37 were randomized to the control condition. Trained staff members delivered the intervention during chemotherapy treatments to reduce burden on the patients. Insomnia was assessed with the Insomnia Severity Index (ISI), anxiety was assessed with the Spielberger State-Trait Anxiety Inventory (STAI), symptom burden was assessed with the Symptom Inventory (SI), and study staff recorded previous treatments and surgeries received by patients. RESULTS Patients randomized to BBT-CI showed significantly greater improvements in their ISI scores than the sleep hygiene group. Additionally, several treatment moderators were identified. The effect of BBT-CI was greater among individuals with lower baseline state-trait anxie