[Relationship between sleep duration and hypertension among elderly residents in 15 provinces of China in 2015].

Objective: To explore the relationship between the duration of sleep and hypertension among residents aged 60 and above in 15 provinces of China.

Methods: Based on the China Health and Nutrition Survey in 2015, 4078 residents aged 60 and above who provided complete diagnostic information on sleep duration and blood pressure were selected as subjects by stratified multi-stage cluster random sampling.

Results: The average age of participants aged 60 and above in 15 provinces was 68.41 years old, with 1915 were male, 2163 were female, 1683 urban participants and 2464 rural participants. After adjusting for gender, age, education, and economic confounding factors, Model 2 found that subjects who slept less than 7 h/d and those who slept more than 8 h/d had an increased risk of developing hypertension compared with the recommended sleep duration, the ORs were 1.24(95%CI 1.03-1.51) and 1.38(95%CI 1.15-1.65). Adding the sitting time, smoking, drinking and obesity to the Model 2, compared with the recommended sleep duration, subjects who slept less than 7 h/d and those who slept more than 9 h/d had an increased risk of hypertension. The ORs values were 1.27(95%CI 1.04-1.56) and 1.40(95%CI 1.16-1.70).

Conclusion: The proportion of the elder aged 60 and older who sleep less than 7 h/d or more than 9 h/d has increased hypertension.