["Geriatrics &Gerontology International, Volume 26, Issue 8, August 2026. ", "\nCombining sleep report feedback with telephone‐based health guidance supported early improvement in subjective sleep among community‐dwelling older adults. Sleep improvements were partially lost after discontinuation of health guidance, suggesting that sustained professional support may be important for maintaining intervention effects.\n\nABSTRACT\n\nAim\nTo evaluate the effectiveness of sleep monitoring, report feedback, and telephone‐based guidance regarding sleep hygiene and daytime activity for community‐dwelling older adults.\n\n\nMethods\nWe conducted a three‐arm randomized controlled trial among community‐dwelling adults in Japan. Participants were divided into three groups: (A) sleep report feedback and telephone‐based health guidance for 6 months; (B) sleep report feedback and telephone‐based health guidance for the first 3 months followed by sleep report feedback alone for the subsequent 3 months; and (C) sleep report feedback alone for 6 months. All groups used a sleep monitoring device. The Athens Insomnia Scale (AIS) score was the primary outcome. We analyzed time‐series data by comparing different groups before and after the intervention to determine factors influencing the AIS score. All significance levels were set at p < 0.05.\n\n\nResults\nIn total, 229 participants (80, 74, and 75 participants in groups A, B, and C, respectively) were randomized (men: 37.1%; mean age: 78.5 years; average AIS score: 6.5). Linear mixed model analysis revealed a significant group‐by‐time interaction for AIS scores (p = 0.002). Both intervention groups showed significant within‐group improvements in AIS scores at 3 months compared with baseline, whereas the control group showed no significant change over time. In between‐group comparisons, Group B showed significantly lower AIS scores than the control group at 3 months.\n\n\nConclusions\nCombining sleep report feedback with telephone‐based health guidance may support improvement in subjective sleep status among community‐dwelling older adults.\n\n\nTrial Registration\nCommittee and registered in the UMIN Clinical Trials Registry (study number: 21249; date of first registration: December 15, 2021; receipt number: R000052743; https://center6.umin.ac.jp/cgi‐open‐bin/ctr_e/ctr_view.cgi?recptno=R000052743)\n\n"]