The psychological wellbeing outcomes of nonpharmacological interventions for older persons with insomnia symptoms: A systematic review and meta-analysis. Author: Perach R1, Allen CK2, Kapantai I2, Madrid-Valero JJ3, Miles E4, Charlton RA1, Gregory AM5 Affiliation: <sup>1</sup>Department of Psychology, Goldsmiths, University of London, United Kingdom. <sup>2</sup>School of Psychology, University of Kent, United Kingdom. <sup>3</sup>Department of Human Anatomy and Psychobiology, University of Murcia, Spain; Murcia Institute of Biomedical Research, IMIB-Arrixaca, Spain. <sup>4</sup>School of Psychology, University of Sussex, United Kingdom. <sup>5</sup>Department of Psychology, Goldsmiths, University of London, United Kingdom. Electronic address: a.gregory@gold.ac.uk. Conference/Journal: Sleep Med Rev. Date published: 2018 Sep 28 Other: Volume ID: 43 , Pages: 1-13 , Special Notes: doi: 10.1016/j.smrv.2018.09.003. [Epub ahead of print] , Word Count: 173 Nonpharmacological treatment of insomnia in older persons has been associated with reduced insomnia symptoms and increased psychological wellbeing. This systematic review and meta-analysis examined whether nonpharmacological interventions can promote wellbeing indicators in older persons who experience insomnia symptoms and investigated the components of these interventions. Twenty studies met inclusion criteria. Psychological wellbeing outcomes included symptoms of depression, anxiety, mental health-related quality of life, and fatigue. Interventions significantly reduced depression and fatigue symptoms in most of the studies that included these outcomes. Findings of our qualitative analysis suggest that mindfulness-based interventions in particular can potentially reduce depression symptoms in older persons with insomnia symptoms. Meta-analyses of studies that included psychological wellbeing outcomes showed small-medium weighted mean effects indicating reductions in symptoms of depression, anxiety, and fatigue. The results suggest that nonpharmacological interventions for older persons with insomnia symptoms can potentially reduce depression and fatigue symptoms and highlight interventions that may be particularly valuable for this purpose. KEYWORDS: Anxiety; Depression; Fatigue; Insomnia; Meta-analysis; Nonpharmacological interventions; Older persons; Psychological wellbeing; Systematic review PMID: 30408706 DOI: 10.1016/j.smrv.2018.09.003