Weighted Blankets as a Sleep Intervention: A Scoping Review.

Importance: Sleep disorders are associated with a range of health conditions, with poor sleep often further exacerbating individuals' health, well-being, and ability to participate in daily occupations. Weighted blankets offer a potentially simple nonpharmacological sleep intervention option.

Objective: To summarize available literature on instrumentation and outcomes associated with overnight use of weighted blankets for therapeutic purpose.

Evidence review: A scoping review following the PRISMA review guidelines was conducted. Sources included MEDLINE, Cochrane Library, CINAHL, PsycINFO, Scopus, Embase, and Google. Included studies reported on overnight use of weighted blankets. Critical appraisal of studies was conducted with standardized tools.

Findings: Eighteen studies met the inclusion criteria. Positive outcomes were reported for adults, including improved sleep, reduction in medication use, and improved mood. Sleep outcomes were mixed for children and adolescents but included improved occupational performance. Methodological quality of included studies regarding effectiveness was variable. Ten studies included details of the intervention, whereas only one study reported on implementation. No specific guidelines for use were included.

Conclusions and relevance: Weighted blankets are used as a sleep intervention for individuals across the life span experiencing a range of health conditions. Currently, there is more evidence of effectiveness with adults, although parents are favorable regarding weighted blanket use for children. Implementation and recommendation of weighted blankets are typically led by occupational therapists, with knowledge of the intervention facilitating use. This review provides information to inform occupational therapists' clinical decision-making and continued implementation of weighted blankets for individuals with sleep problems. Plain-Language Summary: This scoping review summarizes what is known about the use of weighted blankets as a sleep intervention for people of all ages. There is more evidence for overnight use of weighted blankets for adults, with improvements reported in sleep, mood, medication use, and pain. Although there is little evidence of improvement in sleep for children, some children show improvement in everyday functioning, and parents report positive outcomes from overnight use of weighted blankets. These findings suggest that occupational therapists should consider offering or recommending weighted blankets as a sleep intervention option for people of all ages, alongside consideration of individuals' preferences. Development of practice guidelines that incorporate current research findings is urgently needed to support occupational therapists' use of weighted blankets.