Drake Shafer, Mentor: Dr. Joshua Cho

Title:  The Narrow Window of Sleep Associated with Lower Mortality in Older Adults: A Systematic Review with Meta-Analysis

Importance:  Long and short sleep durations are associated with diseases such as obesity and cardio-vascular disease (CVD), as well as higher mortality in middle aged adults. Growing evidence has suggested a similar relationship in older adults but has been limited by low-power studies and scarce systematic reviews.

Objective:  Our study serves to determine the relationship between sleep duration and all-cause and specific-cause mortality in adults ≥ 60 years old. We hypothesize low sleep durations (<7 h) and high sleep durations (>9 h) will form U-shaped relationship with all-cause mortality as well as with mortality from CVD.
 

Design: Through a systematic review, PubMed, Google Scholar, Cochrane, and Embase were searched for eligible articles with no year limits. Inclusion criteria included: ≥ 5 year cohort studies, participants ≥ 60 years of age, measurement of nighttime sleep duration, assessment of specific and all cause-mortality, and with no restrictions due to language. Meta-Analysis extracted and compiled data from all eligible articles to calculate a Hazard Ratio between sleep duration and all-cause mortality, as well as specific-cause mortality when available.

Results/Discussion: In-progress