“…Additionally, different studies have reported that more than 60% of older adults living in a nursing home had some sleep difficulties (Fetveit & Bjorvatn, 2002;Martin & Ancoli-Israel, 2008). There are some possible causes for sleep problems observed in nursing home residents in addition to agerelated changes in sleep architecture, such as nocturia, environment-related noise (Gentili, Weiner, Kuchibhatil, & Edinger, 1997), inactivity, longer amounts of time spent in bed, lack of bright light exposure, poor sleep hygiene (Alessi & Schnelle, 2000;Neikrug & Ancoli-Israel, 2010), physical disabilities, practices in care homes (Ellmers, Arber, Luff, Eyers, & Young, 2013), polypharmacy, social disengagement, depression, dementia, room temperature and room sharing (Ye & Richards, 2018). These possible reasons are likely to increase the severity of sleep problems in nursing home residents.…”