Association Between Sleep Duration And Cardiovascular AndCerebrovascular Diseases

Objectives: This study was conducted to reveal the prevalence of cardiovascular and cerebrovascular diseases and the distribution of sleep duration in a middle-aged and elderly Chinese population,and then to examine whether sleep duration is associated with the risk of cardiovascular and cerebrovascular diseases.Methods: This paper used part of data from China Health and Retirement Longitudinal Study conducted in 2013 with multistage stratified cluster random sampling.This study was a population-based cross-sectional study.It described the distribution of sleep duration in a middle-aged and elderly Chinese population,and compared the prevalence of cardiovascular and cerebrovascular diseases among populations with different characteristics.Then multiple logistic regression analysis was applied to examine the association between sleep duration and cardiovascular and cerebrovascular diseases.Results: 16644 participants aged(59.7±9.8)years were investigated.7843 of them were males,and 8796 were females.The prevalence of hypertension,heart disease and stroke in this study was 40.7%,12.1%,2.1%,respectively.The constituent ratios of midday napping duration categories(0min,1-60 min,>60min)were 42.6%,18.3%,39.1%.The constituent ratios of night sleep duration categories(<7h,7-9h,>9h)were 55.6%,41.1%,3.3%.The constituent ratios of 24-hour sleep duration categories(<7h,7-9h,>9h)were 44.3%,46.2%,9.5%.After multiple logistic regression analysis,as compared with no midday napping,midday napping duration >60min was associated with increased risks of both hypertension and heart problems with adjusted ORs of 1.20(1.11-1.29)and 1.16(1.04-1.30),respectively.In comparison of night sleep duration 7-9h,night sleep duration >9h was associated with increased risks of both hypertension and stroke with adjusted ORs of 1.26(1.01-1.57)and 1.79(1.02-3.12),respectively.Participants sleeping no more than 7 hours were at higher risks of heart problems and the adjusted OR and 95%CI were 1.38(1.22-1.56).The results of associations of 24-hour sleep duration with cardiovascular and cerebrovascular diseases were extremely similar to that of night sleep duration.Participants having midday napping >60min and night sleep duration >9h were at higher risks of both hypertension and stroke than those with no napping and sleeping 7-9h per night.The adjusted ORs were 1.55(95%CI=1.16-2.07,P=0.003)and 2.40(95%CI=1.09-5.27,P=0.030),respectively.Moreover,compared with no napping and night sleep duration 7-9h,the adjusted OR of heart problems was 1.61(95%CI=1.32-1.97,P<0.001)for napping >60min and sleeping <7h per night.Conclusions: Both short and long sleep duration were independently associated with cardiovascular and cerebrovascular diseases.In addition,midday napping duration and night sleep duration had joint effects on cardiovascular and cerebrovascular diseases.A large part of the middle-aged and elderly Chinese population had excessive midday napping duration,insufficient night sleep duration,and insufficient 24-hour sleep duration,which could increase the risk of heart problems.Thus,adequate sleep duration is advocated.