There were significant differences in median sleep duration when stratified by participant demographics (self-reported sex, self-reported race/ethnicity, education) and lifestyle factors (smoking, alcohol intake) (Table 1).
factors (sex, lifestyle,...) sẽ có đặc thù về số giờ ngủ trung bình?
Sleep health has been associated with all-cause mortality and chronic diseases, including psychiatric and cardiometabolic disorders1,2,3,4,5,6,7,8. Many previous studies have focused on sleep durations and have reported J-shaped associations, in which individuals with shorter (≤6 h) or longer (≥9 h) average daily sleep duration are at higher risk for a variety of poor health outcomes1,2,6. These studies have helped inform recommendations suggesting that approximately 7–9 h of daily sleep is appropriate for most adults9.Less is known about the associations between chronic disease and other real-world sleep patterns, including sleep regularity and stages (for example, N1, N2, N3, rapid eye movement (REM)).
tóm tắt: sleep health thường được nghiên cúu và hiểu thông quá số lượng giờ ngủ-bao nhiêu là hợp lý cho người lớn.
Chưa có nguyên cứu đi sâu vô phân tích association từng pha trong giấc ngủ với các bệnh
Fitbit-derived sleep data
ngạc nhiên khi đội nghiên cứu chọn Fitbit thay vì apple watch? Độ chính xác hay vì sponsor