Pilot Study to Examine the Effects of Indoor Daylight Exposure on Depression and Other Neuropsychiatric Symptoms in People Living With Dementia in Long Term Care Facilities
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 83
- 试验地点
- 8
- 主要终点
- Change in Cornell Scale for Depression in Dementia (CSDD)
研究概览
简要总结
This study is designed to test the hypothesis that an intervention increasing exposure to daylight indoors will reduce depression and other neuropsychiatric symptoms among people living with dementia in long term care facilities.
详细描述
Exposure to sufficient daylight indoors is a novel and potentially effective nonpharmacological treatment option for reducing depression and other neuropsychiatric symptoms for people living with dementia in long term care facilities. However, there are currently no minimum requirements for daylight access in care facilities. In urban settings, it is common for residents to spend the majority of the day indoors, illuminated by electrical light sources that deliver light with significantly lower intensities and reduced spectrum compared with daylight.
A 12-week pilot study was conducted in 8 dementia care facilities involving (n = 83) participants addressing the hypothesis that an intervention increasing indoor exposure to daylight will reduce depression and other neuropsychiatric symptoms. At 4 facilities, staff was enlisted to increase daylight exposure by taking participants to a perimeter room with daylight exposure for socialization in the morning (8:00 - 10:00 AM) each day. At the other 4 facilities, a control group were taken to a similar sized area without daylight for socialization under typical electrical lighting conditions. Outcome measures for depression and other neuropsychiatric symptoms were taken at the beginning and end of the 12-week study.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Residents were recruited according to the trial inclusion criteria: 1) Alzheimer's disease and related dementias (ADRD) diagnosis, 2) no physical co-morbidities that precluded participation in the daily group intervention, and 3) a Mini-Mental State Exam (MMSE) score of 10 or higher
排除标准
- •physical co-morbidities that precluded participation in the daily group intervention
研究组 & 干预措施
Control
At the 4 facilities in the control arm, participants received the usual care. During the period from 8:00 - 10:00 AM each day, the control group was taken to a similar sized area indoors (without daylight) for socialization under typical electrical lighting conditions.
Daylight Intervention
At the 4 facilities in the active light intervention arm, staff increased the daylight exposure of participants by taking them to the perimeter zone of a daylit room from 8:00 to 10:00 AM for socialization over a period of 12 weeks. The perimeter zone was defined to be the region of the room within 3 meters from windows. The intervention was administered each day (7 days / week) over the duration of the study.
干预措施: Daylight Intervention (Other)
结局指标
主要结局
Change in Cornell Scale for Depression in Dementia (CSDD)
时间窗: A CSDD score was taken at the beginning of the 12-week study and once again at the end of the 12-week study.
The Cornell Scale for Depression in Dementia (CSDD) was used to measure depression. The CSDD is designed for the assessment of depression in older people with dementia who can at least communicate basic needs. The CSDD scale ranges from 0 to 38, with higher scores indicating higher levels of depression. Scores above 10 indicate a probable major depression. Scores above 18 indicate a definite major depression. Scores below 6 are associated with absence of significant depressive symptoms.
次要结局
- Change in Neuropsychiatric Inventory Nursing Home Version (NPI-NH)(A NPI-NH score was taken at the beginning of the 12-week study and once again at the end of the 12-week study.)
研究者
Kyle Konis
Assistant Professor
University of Southern California